how crazy can you make a stock intake??

LX XLR8R · 09-07-2001, 06:08 PM

im pondering the idea of making a total sleeper over the winter..
i want to build a 347 using a stock intake and get alot from it..i have full acess to a machine shop...i was ganna cut one in 1/2 gut it out and open everything up to accept a 70mmTB(i have one that looks stock)..the lower i was ganna get a system max 1 and port it out..
after i welded the intake back 2gether i was ganna polish the entire thing so people wont see the weld and cut..
i am going to use pretty much all my other stuff i have(heads<paint them black>, cam<will prolly get a smalller on>, exhaust) and it will be in the notch..i am also pluming in my zex kit also on the dl..
so how fast gave people went with a stock intake on motor???i figure the 347 just wants to breath so i was ganna open this thing up to the max

------------------
1987 black notch(ex 4 banger)
DSS 306 w/ main support...Elderbrock 6028 heads..gt-40 intake..24# injectors...70 mm tb..77 pro-m...accel 300+..mac full legnth..tremec w/ pro5oh...full MAC exhaust,off road h-pipe,long tubes, catback...ron davis radiator..subframes, control arms...CFDF II..o yea holley FPR sucks..dont buy one..
AIM=onesillynotch

blue00gt · 09-07-2001, 07:20 PM

Even with the work you describe you would still be hurting on top end with a modded stock intake because of the long runners. A 347 will naturally make a lot of torque compared to a 302, so I wouldn't want to kill top end hp with a stock manifold.

84LX89GT · 09-08-2001, 07:04 PM

go to www.extrudehone.com and request a brochure. I ordered one and in the brochure it says that they flow match all the runners (apparently #'s 1 and 5 flow less than the others) and i think it increases flow to over 50% more than stock. Definately worth looking at even though it'd cost about $500. If you can do this at home, i believe that you can really extensively port them if you have the right tools.
If you open up the systemax lower and match the upper to it, i'm sure you could make ALOT of power. Hell, even if you port the sh/t out of the upper and make a mistake you could probably find another used one for under $50. Good luck,

------------------
previous name: 84stangLX
'84 Mustang 5.0 LX
my LX
'89 Mustang GT
my GT

Unit 5302 · 09-08-2001, 09:19 PM

I seem to remember an article on Extrude Hone vs. the GT-40. The GT-40 flowed a little better than the extrude honed stocker. The price was almost the same.

Five0 · 09-08-2001, 11:47 PM

Hey unit, I saw an ad like that and they tested several intakes before and after extrude honing and the stock did flow a little less but had the best runner balance of all the intakes tested. You can port extensively by cutting the intake and if you want to do like mine on my old mustang you can open it up so much in the front that you will have to weld the hole where the bolt goes through in the center. That is a big restriction. If I had to do it all over again I would have done it the same but I would have also had it extrude honed to make it perfect.

------------------
James Cox
nochevy@hotmail.com
1991 Mustang LX
No times with 347 stroker yet.

LX XLR8R · 09-10-2001, 10:39 AM

the reason i want the stock uppper cuz thats the first thing people see..i do alot of cash racing on the street..thats why i want it..o well ill bring one of the intakes i got laying around and i am ganna cut it open today at work..ill fill ya in later

------------------
1987 black notch(ex 4 banger)
DSS 306 w/ main support...Elderbrock 6028 heads..gt-40 intake..24# injectors...70 mm tb..77 pro-m...accel 300+..mac full legnth..tremec w/ pro5oh...full MAC exhaust,off road h-pipe,long tubes, catback...ron davis radiator..subframes, control arms...CFDF II..o yea holley FPR sucks..dont buy one..
AIM=onesillynotch

Smokedawg · 09-10-2001, 11:09 AM

I had my stock intakes fully ported. It has plenty of torque but not enough hp. I cant wait to get my new tf or edelbrock intake!

------------------
347 Stroker Motor: Balanced, Cobra Transmission, Extrude Ported and Polished Upper and ported Lower, GT40 Milled Ported and Polished Heads, B303 Cam, BBK 1 5/8 Headers, 30lb Bosch Injectors, Holley AFPR, March Underdrive Pulleys, Perma-Cool Fan, 3-Core Radiator, Accel Performance Coil, Accel 300+ Racing Wires, Ram Air, K&N Filter, 73mm Vortech MAF, 70mm TB, FlowMaster Exhaust w/BBK Offroad H-Pipe, Hurst Shifter, 3:55 Gears, Ram Clutch, Cross Drilled Rotors, AC and Smog del, rear seat del.

LX XLR8R · 09-10-2001, 02:44 PM

hmm let me put you guys on the same leval im thinking..i wast ganna port the stock intake..i was ganna gut it and take 1" out of the legth of runner..i was ganna open it up so it almost performs like a boxed intake in disguise

------------------
1987 black notch(ex 4 banger)
DSS 306 w/ main support...Elderbrock 6028 heads..gt-40 intake..24# injectors...70 mm tb..77 pro-m...accel 300+..mac full legnth..tremec w/ pro5oh...full MAC exhaust,off road h-pipe,long tubes, catback...ron davis radiator..subframes, control arms...CFDF II..o yea holley FPR sucks..dont buy one..
AIM=onesillynotch

Yan88gt · 09-10-2001, 08:29 PM

Don't forget to paint your injectors orange if you wan't a real sleeper. It makes me laught to see guys who tell me that they have 400 hp with the stock injectors. Thats the second thing i see after the intake. Good chance!

90dpscoupe · 09-10-2001, 10:11 PM

Down here, is like, the city where everyone loves to run stock intakes, one guy i know was running a ported stocker going 11.3 with a 100 shot, 4.30 grs, i know too much gear, trmec) with ported 69 windsor heads, and much more mods in the motor, he did spend lots of money though on the porting, but i agree with above statements, the topend just isnt like it would be with a holley or tf.

09-07-2001, 06:08 PM	#1
LX XLR8R Dirk Diggler Join Date: Feb 1999 Location: SLOATSBURG, NY Posts: 1,931	how crazy can you make a stock intake?? im pondering the idea of making a total sleeper over the winter.. i want to build a 347 using a stock intake and get alot from it..i have full acess to a machine shop...i was ganna cut one in 1/2 gut it out and open everything up to accept a 70mmTB(i have one that looks stock)..the lower i was ganna get a system max 1 and port it out.. after i welded the intake back 2gether i was ganna polish the entire thing so people wont see the weld and cut.. i am going to use pretty much all my other stuff i have(heads<paint them black>, cam<will prolly get a smalller on>, exhaust) and it will be in the notch..i am also pluming in my zex kit also on the dl.. so how fast gave people went with a stock intake on motor???i figure the 347 just wants to breath so i was ganna open this thing up to the max ------------------ 1987 black notch(ex 4 banger) DSS 306 w/ main support...Elderbrock 6028 heads..gt-40 intake..24# injectors...70 mm tb..77 pro-m...accel 300+..mac full legnth..tremec w/ pro5oh...full MAC exhaust,off road h-pipe,long tubes, catback...ron davis radiator..subframes, control arms...CFDF II..o yea holley FPR sucks..dont buy one.. AIM=onesillynotch

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09-07-2001, 07:20 PM	#2
blue00gt Mustang Addict Join Date: Jan 2001 Location: McKinney, TX Posts: 1,294	Even with the work you describe you would still be hurting on top end with a modded stock intake because of the long runners. A 347 will naturally make a lot of torque compared to a 302, so I wouldn't want to kill top end hp with a stock manifold.

09-08-2001, 07:04 PM	#3
84LX89GT Mustangs Join Date: Jul 2000 Posts: 1,938	go to www.extrudehone.com and request a brochure. I ordered one and in the brochure it says that they flow match all the runners (apparently #'s 1 and 5 flow less than the others) and i think it increases flow to over 50% more than stock. Definately worth looking at even though it'd cost about $500. If you can do this at home, i believe that you can really extensively port them if you have the right tools. If you open up the systemax lower and match the upper to it, i'm sure you could make ALOT of power. Hell, even if you port the sh/t out of the upper and make a mistake you could probably find another used one for under $50. Good luck, ------------------ previous name: 84stangLX '84 Mustang 5.0 LX my LX '89 Mustang GT my GT

09-08-2001, 09:19 PM	#4
Unit 5302 Registered Member Join Date: May 1999 Posts: 5,246	I seem to remember an article on Extrude Hone vs. the GT-40. The GT-40 flowed a little better than the extrude honed stocker. The price was almost the same.

09-08-2001, 11:47 PM	#5
Five0 Registered Member Join Date: Apr 2000 Location: middleburg, fl, usa Posts: 1,134	Hey unit, I saw an ad like that and they tested several intakes before and after extrude honing and the stock did flow a little less but had the best runner balance of all the intakes tested. You can port extensively by cutting the intake and if you want to do like mine on my old mustang you can open it up so much in the front that you will have to weld the hole where the bolt goes through in the center. That is a big restriction. If I had to do it all over again I would have done it the same but I would have also had it extrude honed to make it perfect. ------------------ James Cox nochevy@hotmail.com 1991 Mustang LX No times with 347 stroker yet.

09-10-2001, 10:39 AM	#6
LX XLR8R Dirk Diggler Join Date: Feb 1999 Location: SLOATSBURG, NY Posts: 1,931	the reason i want the stock uppper cuz thats the first thing people see..i do alot of cash racing on the street..thats why i want it..o well ill bring one of the intakes i got laying around and i am ganna cut it open today at work..ill fill ya in later ------------------ 1987 black notch(ex 4 banger) DSS 306 w/ main support...Elderbrock 6028 heads..gt-40 intake..24# injectors...70 mm tb..77 pro-m...accel 300+..mac full legnth..tremec w/ pro5oh...full MAC exhaust,off road h-pipe,long tubes, catback...ron davis radiator..subframes, control arms...CFDF II..o yea holley FPR sucks..dont buy one.. AIM=onesillynotch

09-10-2001, 11:09 AM	#7
Smokedawg Tires Fear Me... Join Date: Jan 2001 Posts: 867	I had my stock intakes fully ported. It has plenty of torque but not enough hp. I cant wait to get my new tf or edelbrock intake! ------------------ 347 Stroker Motor: Balanced, Cobra Transmission, Extrude Ported and Polished Upper and ported Lower, GT40 Milled Ported and Polished Heads, B303 Cam, BBK 1 5/8 Headers, 30lb Bosch Injectors, Holley AFPR, March Underdrive Pulleys, Perma-Cool Fan, 3-Core Radiator, Accel Performance Coil, Accel 300+ Racing Wires, Ram Air, K&N Filter, 73mm Vortech MAF, 70mm TB, FlowMaster Exhaust w/BBK Offroad H-Pipe, Hurst Shifter, 3:55 Gears, Ram Clutch, Cross Drilled Rotors, AC and Smog del, rear seat del.

09-10-2001, 02:44 PM	#8
LX XLR8R Dirk Diggler Join Date: Feb 1999 Location: SLOATSBURG, NY Posts: 1,931	hmm let me put you guys on the same leval im thinking..i wast ganna port the stock intake..i was ganna gut it and take 1" out of the legth of runner..i was ganna open it up so it almost performs like a boxed intake in disguise ------------------ 1987 black notch(ex 4 banger) DSS 306 w/ main support...Elderbrock 6028 heads..gt-40 intake..24# injectors...70 mm tb..77 pro-m...accel 300+..mac full legnth..tremec w/ pro5oh...full MAC exhaust,off road h-pipe,long tubes, catback...ron davis radiator..subframes, control arms...CFDF II..o yea holley FPR sucks..dont buy one.. AIM=onesillynotch

09-10-2001, 08:29 PM	#9
Yan88gt Registered Member Join Date: Jun 2001 Location: Quebec canada Posts: 92	Don't forget to paint your injectors orange if you wan't a real sleeper. It makes me laught to see guys who tell me that they have 400 hp with the stock injectors. Thats the second thing i see after the intake. Good chance!

09-10-2001, 10:11 PM	#10
90dpscoupe Registered Member Join Date: Jun 2000 Location: sanantonio, Tx, usa Posts: 1,407	Down here, is like, the city where everyone loves to run stock intakes, one guy i know was running a ported stocker going 11.3 with a 100 shot, 4.30 grs, i know too much gear, trmec) with ported 69 windsor heads, and much more mods in the motor, he did spend lots of money though on the porting, but i agree with above statements, the topend just isnt like it would be with a holley or tf.