[dean-93]

so i bought a cobra intake with a 65 mm throttle body and going to be deal hunting ebay and junkyards for some gt40 heads.And thinking of a steeda 18 or 19 cam in a month or two.

my question is what else can i do to use my parts to there potential any thing you can think of would be great

[First5.0]

First off i would have them fully ported and polished, new springs, possibly larger valves. You could have them shaved for higher compression & you could get roller rockers. And crane went out of business, so you'll have to go searching for the steeda cam. I personally would go bigger, trick flow stage one for instance.

[89coupe]

Originally Posted by First5.0

First off i would have them fully ported and polished, new springs, possibly larger valves. You could have them shaved for higher compression & you could get roller rockers.

Why put all that money in a stock head? How does that make sense?

Not a very wise suggestion.

As been said Time and Time again, By the time you spend all that money on gt40's, you could get a set of Trick Flows or AFR's, that will still out perform the gt40's.

Its a waste of money, unless you race in a class that mandates a stock head.

[RLG34750]

the gt40's perform better than e7's

if you have the ability to polish & port them all the better

but i am compelled to agree they are still stock heads.....

you only can get so much out of them .....

Rather than put a ton of money in them i'd save it toward a set of aftermarket heads

JMO

[Dyno Dude]

For starters, its not worth the money to have them ported. Just have a good 3 angle valve job done, that is all thats needed. Keep the stock camshaft and use 1.72 rockers, you should have a 12.50 car that drives like its stock. You will beat almost all the "magazine type" head/cam/intake cars on the street.

The GT-40 heads are tricky to port, unless your have alot of experience with them, you will only gain 10-15 cfm. Enlarging the ports does mostly nothing to them, its all in the valve pocket area.

[shabbyblue]

"And crane went out of business, so you'll have to go searching for the steeda cam. I personally would go bigger, trick flow stage one for instance."

Is the Trick flow stage one cam really that much bigger then the Steeda 18 cam?

[Dyno Dude]

Originally Posted by shabbyblue

"And crane went out of business, so you'll have to go searching for the steeda cam. I personally would go bigger, trick flow stage one for instance."

Is the Trick flow stage one cam really that much bigger then the Steeda 18 cam?

Neither cam is worth a crap.

[25thfox]

The TFS stage one cam is actually a pretty good cam for his set up. Is steeda owned by Crane?

[Dyno Dude]

Originally Posted by 25thfox

The TFS stage one cam is actually a pretty good cam for his set up. Is steeda owned by Crane?

Why don't you have the stage 1 cam?. I know................ because you don't want to slow down.

[dean-93]

wow a 12.50 i was hoping i could get in the thirteens

[dean-93]

Originally Posted by Dyno Dude

For starters, its not worth the money to have them ported. Just have a good 3 angle valve job done, that is all thats needed. Keep the stock camshaft and use 1.72 rockers, you should have a 12.50 car that drives like its stock. You will beat almost all the "magazine type" head/cam/intake cars on the street.

The GT-40 heads are tricky to port, unless your have alot of experience with them, you will only gain 10-15 cfm. Enlarging the ports does mostly nothing to them, its all in the valve pocket area.

yea i dont think i would port them

but a 12.50 thats great

[nadrepadre]

yeah pick up some gt40s for cheap. Just put enough money into them to make them work reliably. If you really feel the need to up the cam I would suggest a comp cams grind with about .50 lift but no higher(too much stress on the stock springs and rockers). Personally I would stick with the stock cam for a while and get the most out of it that way. Then I would save up for a while and hit it with a supercharger.

[gottabeford]

I would not buy a cam, get the 1.72 RR like dyno dude said. If u wanna spend money on a cam. Try camshaft inovations custom but at 400 its alittle out of the "theme" of the build. Lol

[justintx75]

Originally Posted by dean-93

so i bought a cobra intake with a 65 mm throttle body and going to be deal hunting ebay and junkyards for some gt40 heads.And thinking of a steeda 18 or 19 cam in a month or two.

my question is what else can i do to use my parts to there potential any thing you can think of would be great

i take it you are looking to do a budget build on the cheap. well the gt40's are not bad just dont put big money in and cleaning up the exhaust port will help a little

cam- the stock one is not bad w/ 1.7 rrr's go performer w/o drama
intake -- get the lower ported by tmoss
heads-- do the math on paper before buying such as valve job, spring kit and mild port work by yourself====how much$$$$...you can buy a set of alloy e-streets for under a grand

[Dyno Dude]

What ever you do, don't buy patriot or pro comp aluminum heads, they are prime grade A junk!. They need $1000.00 in work just to fix the toilets.