Best EFI intake for my app..??

NewAge 5.0 · 11-24-2001, 12:00 PM

my mods are listed below i am wanting to get rid of my GT40 and purchase a better.. intake. I was thinking about the victor 5.0 but I am not sure.. the Holley? TFS? edelbrok? whats the best for 306 cid motors that turn up to factory revs. thats 6250. my car doesnt seem to really TURN ON till 2500-2800 then it really pulls. help me out guys..

Rick 91GT · 11-25-2001, 10:14 AM

I think the Holley would be your best bet it will still retain good low end torque and make lots of top end power. The Victor really is made for 7000rpms or higher or they tend to work very well on a blower car.

exgmguy · 11-25-2001, 12:33 PM

Again I would advise the Holley. It cost a little more than the other, but you get what you pay for.

I switched from a ported GT-40 to the Systemax and gained 2-3 mph on motor and 3-5 mph on the hose.

Rick, I feel like we are the Holley online tech advisors or something......

Rick 91GT · 11-25-2001, 10:35 PM

Quote:

Originally posted by exgmguy

Rick, I feel like we are the Holley online tech advisors or something......

Yeah, I feel that way at times. I really like the guys who say the kit is junk, I guess a 11 out of a low compression 302 doesn't impress them, but a mid to high 12 sec 331 or 347 does.

Sometimes I feel very frustrated about that, the Holley intake is no doubt the best off the shelf intake on the market today, all the tests confirm it. Yes the ports are HUGE and they do not match up to any off the shelf head but a little port matching goes a long way.

NewAge- Get the Holley you won't be disappointed

NewAge 5.0 · 11-26-2001, 01:47 AM

Quote:

I switched from a ported GT-40 to the Systemax and gained 2-3 mph on motor and 3-5 mph on the hose

How many tenths did that yeild? did the GT40 seem SLOW to turn up. if you know what I mean? so you like the HOLLEY.. what shall I do with my Gt40 and inch spacer?? who would buy that? and how much should i charge you have seen the pic of how it looks..

Rick 91GT · 11-26-2001, 08:05 AM

Quote:

Originally posted by NewAge 5.0

How many tenths did that yeild? did the GT40 seem SLOW to turn up. if you know what I mean? so you like the HOLLEY.. what shall I do with my Gt40 and inch spacer?? who would buy that? and how much should i charge you have seen the pic of how it looks..

You can sell the GT-40 intake no problem $300-$350 I would think, isn't yours the polished one? If so maybe you could get a little more. You will need a 1" spacer on the Holley to clear the Tall valve covers.

Jeff Chambers · 11-26-2001, 09:03 AM

The Holley is a good intake, that's for sure. This year FFW allowed the EFI cars in Trophy Stock to choose from the Holley and the Edelbrock Performer RPM, in addition to the previous GT-40/Explorer/Cobra intakes. Us EFI guys needed something that breathed a little better than the Ford intakes in order to keep pace with the carbureted guys. The Ford intakes just give out above 6000rpm.

About half the guys went with the RPM and half with the Holley and we all saw about the same gains on both the chassis dyno and the flow bench. In general, we gained about 15rwhp over the GT-40/Cobra combinations. But, we're limited to 65mm throttle bodies which are now the restriction in the system. The real key is to get your intake system flowing at least 15% over that of your heads. My GT-40 combination only had two or three runners that flowed as much or more than my heads when flowed with the upper/lower/spacer/TB. After switching to the RPM, all runners had at least the 15% buffer over my head intake flow. On average, I picked up probably .2 to .3 seconds and maybe 1.5mph over the GT-40 combination. The motor is alot more free revving though, real noticeable, especially above 6000. The Holley guys saw about the same pickup.

I personally went with the RPM because of the port size. The GT-40P heads I'm running love port velocity, so I wanted to keep a smaller port cross section (Fel-Pro 1250) to keep the velocity up. I also wanted to retain some of the low end torque that I think you loose with the Holley because of its large port cross section (Fel-Pro 1262). Some other things that I liked better about the RPM are the removeable plenum cover, lighter weight/less thermal mass, and easier installation. The Holley kinda blocks access to the FPR on a stock rail assembly which can be a PITA. The Holley is a *******' monster, size-wise. The RPM also clears my tall valve covers with the 1/2" spacer, which the Holley won't.

Both intakes are good intakes, with the Holley probably being a little bit better if your combination can utilize the extra flow. The RPM will support a huge amount of HP through a wide power band though. All-in-all, I think its six of one and half-dozen of the other.

Rick 91GT · 11-26-2001, 01:29 PM

Jeff- any plans for this winter, do you plan to stay in the same class?

Mach 1 · 11-26-2001, 02:54 PM

So the holly intake ports are larger than the heads on the market? Most aftermarket heads (edelbrock, trick flow, etc...) use the fel-pro 1250 and the holly intake requires opening up the heads to match the larger 1262 gasket size? Is this correct?

exgmguy · 11-26-2001, 03:03 PM

Yes the Holley uses a 1262 gasket. I did not port match my intake to my heads, and I still saw a noticeable gain.

Mach 1 · 11-26-2001, 03:34 PM

wow, thats impressive. Your intake passage is larger than your head passage, causing a definate airflow obstruction (the other way around isnt bad) and you still saw a gain.

Rick 91GT · 11-26-2001, 04:10 PM

I know when I first put my motor together I had about a 3/16" to 1/8" step at the bottom of the ports on the head, and that is ehy I port matched mine. The ports on the Holley are slightly taller then a 1262 and slighty narrower. They are Big Ports.

Jeff Chambers · 11-26-2001, 08:51 PM

The Holley lower is based on the truck lower....yeah the ports are huge. You can get the ports to line up better if you have the lower milled a little. Usually taking about 0.060" off the front and back ends will do it, but you might also have to take some off the sides as well to get the ports centered up good before doing the gasket match. The RPM is pretty much the same. I found that I had to mill some off the sides before it'd drop down into the valley. There are some square bosses on the lower that caught on the heads and wouldn't let it seat completely but a pass or to on the mill solve the problem.

Unless you're using a large port head with the Holley, there will be a big forward facing step to the flow. It takes some work to both the intake and heads to get them aligned and matched.

Rick..I'll be running Street Warrior (formerly Trophy Stock) again next season. The car is completely stripped and gutted right now; getting ready to send it to the paint shop for a snazzy paint job. We'll be shooting for the 10.99 barrier next season....that's probably what it will take to win. The class has gotten soooo competitive and sooooo fast!

Rick 91GT · 11-27-2001, 01:17 PM

Jeff- Good Luck next season, I think your right it will take 10's to take that class next year. All the classes are getting crazy fast as each season goes bye. You realize a snazzy paint job will give you 10hp..lol Street Warrior is a more fitting name, thats what you guys are. I had the oppertunity to race F/S Jason Burcham earlier in the year at a local track, car was impressive. Glad he had issues on the line and I didn't

I planned to run P/S next year and with some changes mainly in the rear I think I can get into the 11.40's but it's going to take 10.65-10.70 to take that class. I may just run some of the Open Comp events then I can get a blower or N2O and not have to run Renagade or Outlaw

It really amazes me how far some of these classes have gone in the last few years, I remember when a 10sec car was fast, now there are so called "street cars" in the 9's or even 8's.

Again Good Luck,

Rick

Coupe Devil · 11-27-2001, 02:10 PM

Hey Rick, Where did you get those valve covers. I really lke them. I need the tube for a crankcase evac. system. I dont want to run a breather cap in each cover. I like the ones you have.
Thanks
Brad

exgmguy · 11-27-2001, 04:21 PM

My heads are already ported to a 1262. Sorry, I forgot that. (

Mach 1 · 11-27-2001, 05:34 PM

“This intake (Performer RPM 5.0 #7126) is exactly what the higher horsepower, naturally aspirated 5.0L Mustangs have been missing. It beat the Cobra intake by 12 horsepower, which peaked at 5500 rpm. The RPM beat the Performer by 6.6 horsepower… but that’s not what impressed me the most. It was the 20 horsepower difference at 6000 rpm, coupled with the way that it kept pulling all the way past 6500 rpm.” — Rick Anderson, Anderson Ford Motorsport

This qoute was taken from edelbroks web page. What I find interesting is that they dont mention the rpm range that the supposed 12 horsepower over the cobra takes place. Was it at 6000 rpm? And if there was a 12 HP over the cobra, and 6.6 HP over the performer, then why the 20 HP difference at 6000 rpm?

They really seem to be hiding something. Any ideas?

Rick 91GT · 11-27-2001, 10:14 PM

Quote:

Originally posted by pony_power_90
Hey Rick, Where did you get those valve covers. I really lke them. I need the tube for a crankcase evac. system. I dont want to run a breather cap in each cover. I like the ones you have.
Thanks
Brad

Contact Jeff Johnsons Billet Fabrications, the covers start at $299, he advertises in MM&FF. Mine have -10AN fittings that use the braided hose to attach to my Steph's Breather tanks.

SaleenGTS · 11-28-2001, 07:27 PM

I don't really think it is in the intake....I have learned a lot from the jap crap around here. Just keep your Intake, but GET A STICKER......a Holley sticker automatically adds the horsepower but saves you lots of money. My car is all stickers, so it is really fast

Umoplata · 11-30-2001, 01:08 PM

I thought Trick Flow was the highest flowing head out there right now? And i was thinking about getting the TFS Street Intake and Street Heads.

What makes the Holley better than TFS in your guy's opinion's?

11-25-2001, 12:33 PM	#3
exgmguy Registered Member Join Date: Feb 1999 Location: Utica, Michigan Posts: 2,631	Again I would advise the Holley. It cost a little more than the other, but you get what you pay for. I switched from a ported GT-40 to the Systemax and gained 2-3 mph on motor and 3-5 mph on the hose. Rick, I feel like we are the Holley online tech advisors or something...... __________________ 1988 Mustang GT stock bottom 302, C4 10.9 @ 128 with 8 psi of Novi 1000 boost!----STOLEN 1989 Mustang notchback Warmed up 306 with a Procharger.

11-26-2001, 01:29 PM	#8
Rick 91GT Procharged! Join Date: May 1999 Location: Hanover, PA Posts: 1,539	Jeff- any plans for this winter, do you plan to stay in the same class? __________________ *D/R 10108 NMRA Drag Radial, 25.5 chassis, F1R* *Check out RNH Performance Performance Engines and Custom Fabrication.* *From Mild to Wild we can build what you want, when you want it.* FOR SALE Stainless Steel Torque Box Supports

11-26-2001, 02:54 PM	#9
Mach 1 Registered Member Join Date: May 1999 Location: Georgia Posts: 3,866	So the holly intake ports are larger than the heads on the market? Most aftermarket heads (edelbrock, trick flow, etc...) use the fel-pro 1250 and the holly intake requires opening up the heads to match the larger 1262 gasket size? Is this correct? __________________ 2002 GT 1993 GT (SOLD) '93 Mustang GT RHC member #142

11-26-2001, 03:03 PM	#10
exgmguy Registered Member Join Date: Feb 1999 Location: Utica, Michigan Posts: 2,631	Yes the Holley uses a 1262 gasket. I did not port match my intake to my heads, and I still saw a noticeable gain. __________________ 1988 Mustang GT stock bottom 302, C4 10.9 @ 128 with 8 psi of Novi 1000 boost!----STOLEN 1989 Mustang notchback Warmed up 306 with a Procharger.

11-26-2001, 03:34 PM	#11
Mach 1 Registered Member Join Date: May 1999 Location: Georgia Posts: 3,866	wow, thats impressive. Your intake passage is larger than your head passage, causing a definate airflow obstruction (the other way around isnt bad) and you still saw a gain. __________________ 2002 GT 1993 GT (SOLD) '93 Mustang GT RHC member #142

11-26-2001, 09:03 AM	#7
Jeff Chambers Moderator Join Date: Aug 2000 Location: Milan, OH Posts: 2,699	The Holley is a good intake, that's for sure. This year FFW allowed the EFI cars in Trophy Stock to choose from the Holley and the Edelbrock Performer RPM, in addition to the previous GT-40/Explorer/Cobra intakes. Us EFI guys needed something that breathed a little better than the Ford intakes in order to keep pace with the carbureted guys. The Ford intakes just give out above 6000rpm. About half the guys went with the RPM and half with the Holley and we all saw about the same gains on both the chassis dyno and the flow bench. In general, we gained about 15rwhp over the GT-40/Cobra combinations. But, we're limited to 65mm throttle bodies which are now the restriction in the system. The real key is to get your intake system flowing at least 15% over that of your heads. My GT-40 combination only had two or three runners that flowed as much or more than my heads when flowed with the upper/lower/spacer/TB. After switching to the RPM, all runners had at least the 15% buffer over my head intake flow. On average, I picked up probably .2 to .3 seconds and maybe 1.5mph over the GT-40 combination. The motor is alot more free revving though, real noticeable, especially above 6000. The Holley guys saw about the same pickup. I personally went with the RPM because of the port size. The GT-40P heads I'm running love port velocity, so I wanted to keep a smaller port cross section (Fel-Pro 1250) to keep the velocity up. I also wanted to retain some of the low end torque that I think you loose with the Holley because of its large port cross section (Fel-Pro 1262). Some other things that I liked better about the RPM are the removeable plenum cover, lighter weight/less thermal mass, and easier installation. The Holley kinda blocks access to the FPR on a stock rail assembly which can be a PITA. The Holley is a *******' monster, size-wise. The RPM also clears my tall valve covers with the 1/2" spacer, which the Holley won't. Both intakes are good intakes, with the Holley probably being a little bit better if your combination can utilize the extra flow. The RPM will support a huge amount of HP through a wide power band though. All-in-all, I think its six of one and half-dozen of the other. __________________ Jeff Chambers 1990 Mustang GT 10.032 Seconds / 137.5 MPH 14-time Street Warrior World Record Setter CRT Performance 2001 Tropic Green Mustang GT - 12.181 / 113.2 MPH 2002 Ford F-250 Crew Cab 7.3l Power Stroke - 17.41@77.2 "There's nothing boring about a small block automatic shifting gears at 9400 rpm!"

11-26-2001, 04:10 PM	#12
Rick 91GT Procharged! Join Date: May 1999 Location: Hanover, PA Posts: 1,539	I know when I first put my motor together I had about a 3/16" to 1/8" step at the bottom of the ports on the head, and that is ehy I port matched mine. The ports on the Holley are slightly taller then a 1262 and slighty narrower. They are Big Ports. __________________ *D/R 10108 NMRA Drag Radial, 25.5 chassis, F1R* *Check out RNH Performance Performance Engines and Custom Fabrication.* *From Mild to Wild we can build what you want, when you want it.* FOR SALE Stainless Steel Torque Box Supports

11-26-2001, 08:51 PM	#13
Jeff Chambers Moderator Join Date: Aug 2000 Location: Milan, OH Posts: 2,699	The Holley lower is based on the truck lower....yeah the ports are huge. You can get the ports to line up better if you have the lower milled a little. Usually taking about 0.060" off the front and back ends will do it, but you might also have to take some off the sides as well to get the ports centered up good before doing the gasket match. The RPM is pretty much the same. I found that I had to mill some off the sides before it'd drop down into the valley. There are some square bosses on the lower that caught on the heads and wouldn't let it seat completely but a pass or to on the mill solve the problem. Unless you're using a large port head with the Holley, there will be a big forward facing step to the flow. It takes some work to both the intake and heads to get them aligned and matched. Rick..I'll be running Street Warrior (formerly Trophy Stock) again next season. The car is completely stripped and gutted right now; getting ready to send it to the paint shop for a snazzy paint job. We'll be shooting for the 10.99 barrier next season....that's probably what it will take to win. The class has gotten soooo competitive and sooooo fast! __________________ Jeff Chambers 1990 Mustang GT 10.032 Seconds / 137.5 MPH 14-time Street Warrior World Record Setter CRT Performance 2001 Tropic Green Mustang GT - 12.181 / 113.2 MPH 2002 Ford F-250 Crew Cab 7.3l Power Stroke - 17.41@77.2 "There's nothing boring about a small block automatic shifting gears at 9400 rpm!"

11-27-2001, 01:17 PM	#14
Rick 91GT Procharged! Join Date: May 1999 Location: Hanover, PA Posts: 1,539	Jeff- Good Luck next season, I think your right it will take 10's to take that class next year. All the classes are getting crazy fast as each season goes bye. You realize a snazzy paint job will give you 10hp..lol Street Warrior is a more fitting name, thats what you guys are. I had the oppertunity to race F/S Jason Burcham earlier in the year at a local track, car was impressive. Glad he had issues on the line and I didn't I planned to run P/S next year and with some changes mainly in the rear I think I can get into the 11.40's but it's going to take 10.65-10.70 to take that class. I may just run some of the Open Comp events then I can get a blower or N2O and not have to run Renagade or Outlaw It really amazes me how far some of these classes have gone in the last few years, I remember when a 10sec car was fast, now there are so called "street cars" in the 9's or even 8's. Again Good Luck, Rick __________________ *D/R 10108 NMRA Drag Radial, 25.5 chassis, F1R* *Check out RNH Performance Performance Engines and Custom Fabrication.* *From Mild to Wild we can build what you want, when you want it.* FOR SALE Stainless Steel Torque Box Supports

11-27-2001, 02:10 PM	#15
Coupe Devil Moderator Join Date: Mar 2001 Location: Myrtle Beach SC Posts: 1,643	Hey Rick, Where did you get those valve covers. I really lke them. I need the tube for a crankcase evac. system. I dont want to run a breather cap in each cover. I like the ones you have. Thanks Brad __________________ 1990 GT, 347, TFS TW Heads, TFS Cam, TFS Track heat, Twin turbos, FMIC, T5. Built Ford Tough Moderator

11-27-2001, 04:21 PM	#16
exgmguy Registered Member Join Date: Feb 1999 Location: Utica, Michigan Posts: 2,631	My heads are already ported to a 1262. Sorry, I forgot that. ( __________________ 1988 Mustang GT stock bottom 302, C4 10.9 @ 128 with 8 psi of Novi 1000 boost!----STOLEN 1989 Mustang notchback Warmed up 306 with a Procharger.

11-27-2001, 05:34 PM	#17
Mach 1 Registered Member Join Date: May 1999 Location: Georgia Posts: 3,866	“This intake (Performer RPM 5.0 #7126) is exactly what the higher horsepower, naturally aspirated 5.0L Mustangs have been missing. It beat the Cobra intake by 12 horsepower, which peaked at 5500 rpm. The RPM beat the Performer by 6.6 horsepower… but that’s not what impressed me the most. It was the 20 horsepower difference at 6000 rpm, coupled with the way that it kept pulling all the way past 6500 rpm.” — Rick Anderson, Anderson Ford Motorsport This qoute was taken from edelbroks web page. What I find interesting is that they dont mention the rpm range that the supposed 12 horsepower over the cobra takes place. Was it at 6000 rpm? And if there was a 12 HP over the cobra, and 6.6 HP over the performer, then why the 20 HP difference at 6000 rpm? They really seem to be hiding something. Any ideas? __________________ 2002 GT 1993 GT (SOLD) '93 Mustang GT RHC member #142

11-28-2001, 07:27 PM	#19
SaleenGTS RICE taste like Chicken Join Date: Jun 2000 Location: Edmond, OK Posts: 687	I don't really think it is in the intake....I have learned a lot from the jap crap around here. Just keep your Intake, but GET A STICKER......a Holley sticker automatically adds the horsepower but saves you lots of money. My car is all stickers, so it is really fast __________________ Dustin 89 Saleen GT Sport Supercharged 306 Started her up 6/8/03 Old Motor Supercharged 347 516 rwhp 553 rwtq 11.249@126.83 1997 Honda CBR 1100XX Super Blackbird 162 hp

11-30-2001, 01:08 PM	#20
Umoplata Registered Member Join Date: Nov 2001 Posts: 30	I thought Trick Flow was the highest flowing head out there right now? And i was thinking about getting the TFS Street Intake and Street Heads. What makes the Holley better than TFS in your guy's opinion's? __________________ "Viva para lutar, lute para viver"

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Explore intake???????????	William Bowers	Windsor Power	2	02-14-2002 10:27 PM
HELP!!! oil in intake, what to do??	bosco	Windsor Power	4	02-03-2002 05:02 PM
Edelbrock spec's and intake question??	jerryIII	Windsor Power	0	05-24-2001 12:49 PM
OIL IN INTAKE almost sure from 'pcv'	QUIN	Windsor Power	8	03-09-2001 01:58 PM
Is the true about Edelbrock heads with TFS intake?	gt93mustang	Windsor Power	14	03-06-2001 07:01 PM