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.

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...

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

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.:D

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

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.

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

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/50 wroteHey 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?

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

Skyler

Re: Which is the real limiting factor on a stock 5.0?
 

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

Re: Which is the real limiting factor on a stock 5.0?
 

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

Re: Which is the real limiting factor on a stock 5.0?
 

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.