How much is my intake and maf holding me back???

dragstang86 · 01-30-2003, 01:34 PM

I recently installed my afr 165 58cc heads and 1.6 roller rockers. I have an unported cobra intake and stock maf sensor. My next order i am planning on ordering the new RPM 2 manifold (after its released), 76mm MAF, and bigger injectors. Am i going to notice a substancial gain? Due to the local tracks being closed for the winter i havnt made a pass with the new heads. With the gt-40 irons and stock rockers i went a 13.03 @ 103. What do you think i will run now? After the intake, maf, and injectors??

thanks for the help

gt-40 irons....for sale
good shape, had no problems, were on the car when i purchased, the guy said about 15k on the heads

Nixon1 · 01-30-2003, 02:56 PM

I'd venture to say you'll see a fairly substantial gain from the things you're going to do...the MAF you're getting is one of the biggest out there if I'm not mistaken.. Just make sure the MAF and fuel injectors work together....if they're not made to match there can be some real driveability issues and probably power and gas mileage loss.

dragstang86 · 01-31-2003, 07:03 AM

So what do you guys think it will run before and after i do the intake, maf sensor and injectors? I will be on slicks just like the 13.03 pass i made with the gt-40 irons and stock rockers.

thanks for your help

mufflerboy · 02-01-2003, 03:51 PM

The Cobra is a good intake it works real nice when the lower is ported.

There are better intakes out there and the performer 2 sounds like a nice piece but I would say stick with the cobra and see how it works first, you may be happy with the gain from the heads they are very good heads.

You may lose bottom end torque with the newer intake and that is nice in a street car.

Definatly get a new MAF a Pro M might be a better choice then the C&L but I have heard good things about the new C&L 76mm kit but I have no first hand experience.

lx5091 · 02-01-2003, 06:46 PM

Are the GT40's ported or polished? do you have pics? There are other things I'd like to spend money on before I worry about heads, but if a deal came along......

88workcar · 02-01-2003, 09:05 PM

89grocerygetter has the same heads, a hr266 cam, and a systemax intake and STOCK TB, 22lph injectors, 73MAF, he runs 12.0s @ 114 What cam do you have? PM me with a price on the irons.

dragstang86 · 02-02-2003, 09:57 AM

what are the specs on the hr266 cam? I have an e303 right now. My goal is to dip in the 11's on the motor before i go to a power adder. Towards the end of this year i plan on building a 347 with a FTI cam.

About the heads.....Just make me an offer....I can get pics on here later this week if you like. They were on the car when i bought it and according to the guy i bought it from have 10-15k on them. They appear to be completely stock with no machine or port work done to them. I ran a 13.03 with them on there with the stock rockers along with the combination in my sig.

later,

01-30-2003, 01:34 PM	#1
dragstang86 Registered Member Join Date: Sep 2002 Location: baltimore, md Posts: 220	How much is my intake and maf holding me back??? I recently installed my afr 165 58cc heads and 1.6 roller rockers. I have an unported cobra intake and stock maf sensor. My next order i am planning on ordering the new RPM 2 manifold (after its released), 76mm MAF, and bigger injectors. Am i going to notice a substancial gain? Due to the local tracks being closed for the winter i havnt made a pass with the new heads. With the gt-40 irons and stock rockers i went a 13.03 @ 103. What do you think i will run now? After the intake, maf, and injectors?? thanks for the help gt-40 irons....for sale good shape, had no problems, were on the car when i purchased, the guy said about 15k on the heads __________________ 90 LX Hatchback 306, AFR 165's 58cc, E303, 1.6 roller rockers, 70mm throttle body, cobra intake, bbk fenderwell, bbk longtubes, x-pipe, flowmasters, pullies, msd 6a, crane ps-92, stock MAF sensor, electric fan, No AC, No air pump, flaming river quick ratio rack C-4, 3500 stall, 373's, aluminum driveshaft SSM Lift bars, , sub frame connectors, strut tower brace 12.57 @105.12mph w/ 1.686 60ft before bbk longtubes (with equal shorties) ----------------------------------------- 86 tube chassis coupe - the trailor queen

01-30-2003, 02:56 PM	#2
Nixon1 Registered Member Join Date: Jan 2003 Location: Palm Bay, FL Posts: 432	I'd venture to say you'll see a fairly substantial gain from the things you're going to do...the MAF you're getting is one of the biggest out there if I'm not mistaken.. Just make sure the MAF and fuel injectors work together....if they're not made to match there can be some real driveability issues and probably power and gas mileage loss. __________________ '91 Mustang GT 5.0 AOD Daily Driver Current stats: NEW 302 short block, E-303 cam (@.050, 220/220, .498/.498, 110 degrees), 1.6 roller rockers, Performer RPM heads (aluminum, 1.9/1.6, 60cc chambers), Cobra intake, Granatelli 75mm MAF, Billet AFPR, Equal-Length Shorty Headers, Off-Road X Pipe, Flowmasters, 4.10 POSI 13.73 at 103.8, ~2.2 60'

01-31-2003, 07:03 AM	#3
dragstang86 Registered Member Join Date: Sep 2002 Location: baltimore, md Posts: 220	So what do you guys think it will run before and after i do the intake, maf sensor and injectors? I will be on slicks just like the 13.03 pass i made with the gt-40 irons and stock rockers. thanks for your help __________________ 90 LX Hatchback 306, AFR 165's 58cc, E303, 1.6 roller rockers, 70mm throttle body, cobra intake, bbk fenderwell, bbk longtubes, x-pipe, flowmasters, pullies, msd 6a, crane ps-92, stock MAF sensor, electric fan, No AC, No air pump, flaming river quick ratio rack C-4, 3500 stall, 373's, aluminum driveshaft SSM Lift bars, , sub frame connectors, strut tower brace 12.57 @105.12mph w/ 1.686 60ft before bbk longtubes (with equal shorties) ----------------------------------------- 86 tube chassis coupe - the trailor queen

02-01-2003, 03:51 PM	#4
mufflerboy Registered Member Join Date: Jan 1999 Posts: 126	The Cobra is a good intake it works real nice when the lower is ported. There are better intakes out there and the performer 2 sounds like a nice piece but I would say stick with the cobra and see how it works first, you may be happy with the gain from the heads they are very good heads. You may lose bottom end torque with the newer intake and that is nice in a street car. Definatly get a new MAF a Pro M might be a better choice then the C&L but I have heard good things about the new C&L 76mm kit but I have no first hand experience. __________________ 93 coupe

02-01-2003, 06:46 PM	#5
lx5091 Registered Member Join Date: Nov 2001 Location: Fall River, MA Posts: 467	Are the GT40's ported or polished? do you have pics? There are other things I'd like to spend money on before I worry about heads, but if a deal came along...... __________________ '02 Explorer XLT 4.0L --Nice Vehicle '97 Saturn SL1--Soon to be ditched for a Ford!

02-01-2003, 09:05 PM	#6
88workcar Registered Member Join Date: Oct 1999 Location: Pierre Part, La. U.S.A. Posts: 1,850	89grocerygetter has the same heads, a hr266 cam, and a systemax intake and STOCK TB, 22lph injectors, 73MAF, he runs 12.0s @ 114 What cam do you have? PM me with a price on the irons. __________________ 88workcar 1988 Mustang LX 342. 417rwhp @ 6800. 28 X 10 ET Drag, 4.30s, 10.69 @ 126.43 1.42 60ft. 11.13 @ 127.7 on BFGs 1.72 60ft Rice Hater # 42 To be old and wise, You must first be young and stupid I'm somewhere in tthe middle.

02-02-2003, 09:57 AM	#7
dragstang86 Registered Member Join Date: Sep 2002 Location: baltimore, md Posts: 220	what are the specs on the hr266 cam? I have an e303 right now. My goal is to dip in the 11's on the motor before i go to a power adder. Towards the end of this year i plan on building a 347 with a FTI cam. About the heads.....Just make me an offer....I can get pics on here later this week if you like. They were on the car when i bought it and according to the guy i bought it from have 10-15k on them. They appear to be completely stock with no machine or port work done to them. I ran a 13.03 with them on there with the stock rockers along with the combination in my sig. later, __________________ 90 LX Hatchback 306, AFR 165's 58cc, E303, 1.6 roller rockers, 70mm throttle body, cobra intake, bbk fenderwell, bbk longtubes, x-pipe, flowmasters, pullies, msd 6a, crane ps-92, stock MAF sensor, electric fan, No AC, No air pump, flaming river quick ratio rack C-4, 3500 stall, 373's, aluminum driveshaft SSM Lift bars, , sub frame connectors, strut tower brace 12.57 @105.12mph w/ 1.686 60ft before bbk longtubes (with equal shorties) ----------------------------------------- 86 tube chassis coupe - the trailor queen

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