Which is the real limiting factor on a stock 5.0? - Page 3

Yan88gt · 02-07-2003, 07:16 PM

I'm actualy building a junkyard turbo kit and my restriction will be the stock block and internals. I will not use the stock heads and intake but i could still make enough power to split the block with them.

srv1 · 02-08-2003, 08:19 PM

i cant agree more with workcar and coupe5oh. i noticed a difference when i ported out the exhaust side and left the intake side alone. i was told that i am "wasting my time" and "wasting my money". I believe for 302 cubic inches, the ported E7, GT40 and GT40P's are your best bet for a budget. I just bought the "P" heads and talked to the guy who Chambers got them from. You would be amazed the little trick things they do to go fast. Anyone have experience with the "P" heads? i want to shave them, but i hear it gets really close.

James...

bigred90gt · 02-08-2003, 09:21 PM

Every one is talking about porting the exhaust side. What about the intake side? If I port the lower intake and the intake runners on the heads along with the exhaust, will this produce more of a benifit? Or should I just port the exhaust side and be happy with the results? Thanks.
Caymon

FireFinder20 · 02-08-2003, 10:01 PM

My father bought his GT new in 91...in 95, he just installed the GT40 intake, 65mm TB, Pro-M Bullet 75mm MAF, Power Pipe w/K&N, 3.73s, Pulleys and 2 chamber Flows. He went 13.9s @ 101 or something like that. The track bug bit him and he started going to the track every weekend, in search of better times.

He got some GT40 Y heads, a B Cam, 24lb inj, electric fan, manual rack, A/C delete, LTs, 2.5 Catted H and Hoosiers and went 13.0s. He lightened the car, got a drag spring kit, torque boxes, 4.10s, M&Hs, had the intake cut open & custom ported and the heads milled and ported. He weighed in at 3010 lbs w/ driver and went 11.87@113.x w/1.5x 60s. He backed it up with an 11.90@112.x. Not bad for a stock bottom end 302.

Just sharing...I think I'm gona be getting his heads and intake this summer, he wants to build a 347.

NotchJohnson · 02-08-2003, 11:25 PM

Caymon, the reason everyone ports the exhaust side of the heads is because of the thermactor "bump" on the roof of the exhaust port. I never realized how big the damn bump was until I pulled my heads off. From what Ive heard, it really restricts the exhaust flow.

Coupe50h · 02-09-2003, 01:11 AM

Yep, and i need to practice what i preach and grind the hump outta mine.....

Skyman · 02-09-2003, 01:31 PM

Well, I used to think that the stock heads were the problem.

But (before blowing the motor) I had a 85 GT with a 88motor, stock cam, stock heads, with intake carb, ignition and fulll exhaust and that little sob ran 105mph.

Its focusing on a good tune, and some motors just have it, and others don't.

Skyler

95/GT/5.0 · 02-15-2003, 01:24 AM

88workcar · 02-19-2003, 07:44 AM

95/gt/50 wrote

Quote:

$$$

Hey with some of that I could really run good.

POLL: 1 Should we start a workcar go fast fund?
2 Should we buy Skyler a new short block?
3 Should we buy dirtbiker some alum heads?

Skyman · 02-19-2003, 03:02 PM

Im all for #2! Lets start the fund drive! Tracking one down in the junkyard right now.

Skyler

88workcar · 08-22-2010, 06:35 AM

Been a while for me, boy the good old days LOL

goodyear1984 · 08-31-2010, 12:47 AM

Quote:

Originally Posted by USMC302

My vote was for the heads but we can't ignore the fact that changing both would be the best combo.
I changed to TW heads with the stock intake and gained a lot ot the track in the coupe a long time ago.
I changed to the Trickflow intake with stock heads and saw almost no gain on the GT. That was also a long time ago too.

im deff with usmc on this .i didnt read every ones post but the stock e7 heads are junk.the ports are small and the valves are small.the stock cam is small,the intake has small long runners which are good for bottom end power.if you put an intake on a on a stock set of heads you really wont see a gain,if u put a cam in a stock motor u wont notice much eaither.i ported a set of e7 heads with a b cam,1.7 rockers,edelbrock performer intake,373 gears,stock headers,bassani x pipe and flowmasters and a 150shot of spray and ran 11.8's. but the amount of time it takes port them or if u dont know how to port them the money you would waste for what u get is not worth it.basically between heads, intake,camshaft none of it works that good as far as performance,they work good togeather but,if u change the heads ur gonna want a cam and intake to match the flow of the heads .if every thing doesnt work togeather you wont get the full potential of the motor..any ways the biggest gain you willl recive on a stock motor will be a set of aluminum heads.the order i would put them in is : heads,cam,intake

goodyear1984 · 08-31-2010, 12:53 AM

Quote:

Originally Posted by goodyear1984

im deff with usmc on this .i didnt read every ones post but the stock e7 heads are junk.the ports are small and the valves are small.the stock cam is small,the intake has small long runners which are good for bottom end power.if you put an intake on a on a stock set of heads you really wont see a gain,if u put a cam in a stock motor u wont notice much eaither.i ported a set of e7 heads with a b cam,1.7 rockers,edelbrock performer intake,373 gears,stock headers,bassani x pipe and flowmasters and a 150shot of spray and ran 11.8's. but the amount of time it takes port them or if u dont know how to port them the money you would waste for what u get is not worth it.basically between heads, intake,camshaft none of it works that good as far as performance,they work good togeather but,if u change the heads ur gonna want a cam and intake to match the flow of the heads .if every thing doesnt work togeather you wont get the full potential of the motor..any ways the biggest gain you willl recive on a stock motor will be a set of aluminum heads.the order i would put them in is : heads,cam,intake

ps the 11.8 i ran with that motor was in my hatch,my car has every thing from a/c to the stock suspension,plus the sound system adds 100 pounds in weight.you can shave off alot of weight and add a drag suspension and take off a good amount of et time.

02-07-2003, 07:16 PM	#41
Yan88gt Registered Member Join Date: Jun 2001 Location: Quebec canada Posts: 92	I'm actualy building a junkyard turbo kit and my restriction will be the stock block and internals. I will not use the stock heads and intake but i could still make enough power to split the block with them. __________________ Ported stock heads and intake, 65mm throttle body, 1.7 roller rockers, pulley, superchip,afpr, electric fan, motorsport headers, magnaflow cat-back, hurst shifter, 3.55 gear, speed density computer 12.81@ 104.7 on E.T street (1.77)

02-08-2003, 08:19 PM	#42
srv1 Get down..... Join Date: Apr 2001 Location: Room 103 Posts: 2,095	i cant agree more with workcar and coupe5oh. i noticed a difference when i ported out the exhaust side and left the intake side alone. i was told that i am "wasting my time" and "wasting my money". I believe for 302 cubic inches, the ported E7, GT40 and GT40P's are your best bet for a budget. I just bought the "P" heads and talked to the guy who Chambers got them from. You would be amazed the little trick things they do to go fast. Anyone have experience with the "P" heads? i want to shave them, but i hear it gets really close. James... __________________ Cobra brakes are on! Finally..... ------------------------------------------------

02-08-2003, 09:21 PM	#43
bigred90gt 2 Stangs in the Stable Join Date: Apr 2002 Location: Baytown, TX Posts: 1,209	Every one is talking about porting the exhaust side. What about the intake side? If I port the lower intake and the intake runners on the heads along with the exhaust, will this produce more of a benifit? Or should I just port the exhaust side and be happy with the results? Thanks. Caymon __________________ '90 GT Under construction Best E.T. = Fast @ High Speeds - OK So I Lie. So What!!! 04 F-150 STX 4.2L 5 spd Rice Haters Club Member #128

02-08-2003, 10:01 PM	#44
FireFinder20 I See Stupid People Join Date: Mar 2002 Location: New Jersey Posts: 47	Well, not my car, but... My father bought his GT new in 91...in 95, he just installed the GT40 intake, 65mm TB, Pro-M Bullet 75mm MAF, Power Pipe w/K&N, 3.73s, Pulleys and 2 chamber Flows. He went 13.9s @ 101 or something like that. The track bug bit him and he started going to the track every weekend, in search of better times. He got some GT40 Y heads, a B Cam, 24lb inj, electric fan, manual rack, A/C delete, LTs, 2.5 Catted H and Hoosiers and went 13.0s. He lightened the car, got a drag spring kit, torque boxes, 4.10s, M&Hs, had the intake cut open & custom ported and the heads milled and ported. He weighed in at 3010 lbs w/ driver and went 11.87@113.x w/1.5x 60s. He backed it up with an 11.90@112.x. Not bad for a stock bottom end 302. Just sharing...I think I'm gona be getting his heads and intake this summer, he wants to build a 347. __________________ 92 Lincoln Mark VII LSC Mods: 65mm Edelbrock TB and a conical K&N Visit Central Jersey Mustangs & Fords

02-08-2003, 11:25 PM	#45
NotchJohnson Registered Member Join Date: Oct 2001 Location: Florida Keys Posts: 593	Caymon, the reason everyone ports the exhaust side of the heads is because of the thermactor "bump" on the roof of the exhaust port. I never realized how big the damn bump was until I pulled my heads off. From what Ive heard, it really restricts the exhaust flow. __________________ 89 notch-finally not stock!! ported gt40's, ported cobra intake, 65mm tb, 75mm maf, mac cai, lt's,prochamber, fms 1.6 rr, 125 shot.

02-09-2003, 01:11 AM	#46
Coupe50h Registered Member Join Date: Aug 2002 Location: SanAntonio, Tx Posts: 957	Yep, and i need to practice what i preach and grind the hump outta mine..... __________________ X-Texas highway patrol ssp 1990 coupe - exploder Gt-40 iron heads, Explorer intake, 19 lber's. E-cam. crane 1.7 rollers. 190fp. 75mm maf. 65mm tb, tubular subframe connectors, mac cai, Asp crank pulley, T-5, king cobra clutch, flowtech 1-5/8 unequals, mac X-pipe Frpp driveshaft, lakewood Lca's. race weight 3,160 12.69 @ 107.35, 1.71 60' 26x8.5 drag's 3.90 gear 13.20 @ 106.91 - 235/60/15 firestones 2.3 60' 3.27 gear

02-09-2003, 01:31 PM	#47
Skyman I need 110mph Trap Speed! Join Date: Feb 1999 Location: So, CA Posts: 4,315	Well, I used to think that the stock heads were the problem. But (before blowing the motor) I had a 85 GT with a 88motor, stock cam, stock heads, with intake carb, ignition and fulll exhaust and that little sob ran 105mph. Its focusing on a good tune, and some motors just have it, and others don't. Skyler __________________ 2001 BMW M3 6spd 12.79@108 RIP ---- 1993 Notch w/ 98 4V 4.6 Fasttt... -1989 Saleen Mustang #406- 12.32@109 -1999 Black Cobra Coupe- JBA Shorties, Bassani Cat-X, Magnaflow 3", Pulleys, 85mm Pro-M, Ported Intake, Soild Rear w/ 4.30s, Tubular Front End, X2C arms, 13lb batt, few others.

02-15-2003, 01:24 AM	#48
95/GT/5.0 Registered Member Join Date: Dec 2002 Location: Biloxi.Mississippi Posts: 49	$$$ __________________ 1995/GT/5.0

02-19-2003, 03:02 PM	#50
Skyman I need 110mph Trap Speed! Join Date: Feb 1999 Location: So, CA Posts: 4,315	Im all for #2! Lets start the fund drive! Tracking one down in the junkyard right now. Skyler __________________ 2001 BMW M3 6spd 12.79@108 RIP ---- 1993 Notch w/ 98 4V 4.6 Fasttt... -1989 Saleen Mustang #406- 12.32@109 -1999 Black Cobra Coupe- JBA Shorties, Bassani Cat-X, Magnaflow 3", Pulleys, 85mm Pro-M, Ported Intake, Soild Rear w/ 4.30s, Tubular Front End, X2C arms, 13lb batt, few others.

08-22-2010, 06:35 AM	#51
88workcar Registered Member Join Date: Oct 1999 Location: Pierre Part, La. U.S.A. Posts: 1,850	Re: Which is the real limiting factor on a stock 5.0? Been a while for me, boy the good old days LOL __________________ 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.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Got into my first REAL race. =)	1969Mach1	Stang Stories	4	07-31-2002 06:25 AM
bbk unequals and stock H pipe :(	scale	Windsor Power	4	06-14-2002 11:41 AM
For whoever it was considering using stock ported heads	2FastLX	Windsor Power	5	10-11-2001 01:53 PM
Would an old stock 351w have more power?	BowTie Eater 5 Liter	Windsor Power	8	02-18-2001 10:54 PM
LT's vs. shorties vs. stock headers	jonnyk	Windsor Power	9	01-01-2001 11:28 AM