91hatchgt

Head studs can only benefit you really. If you want to spend the money to convert, then I say go for it. It is just another piece of mind mod.

my77stang

i know a guy personally who could port your heads as good or better than thumper...... but you probably dont have enough money, and its not cost effective when you can grab aftermarket for what he would charge.

dimebag

send them to thumper... ive never heard a bad review from there... u want to hear from ppl that have used them, theres a forum u should go to...

get studs, nuff said

stang8689

I have heard good about them too

TMC

I wouldn't bother porting those. Yes, there are gains to be had but for the price you can sell them for plus the cash to port them you could have an aluminum head for about the same price on the used market. Don't get me wrong, the GT-40's are fine heads but out of the box TW's will kick the crap out of a worked GT-40 head.

Stroked91

i was thinkin of gettin some alum heads but i already have my rockers and everything for the gt40s so i decided to jsu tstay with them. less aggrivation involved

92Rideagain

Where are you from? Check with some local Mustangers or others that have had work done to their heads and ask for their recommendations. I saw in your post that you have everything for your heads, but see what you get for selling them and buying some good aluminum heads. GT40's a good head, depends on what you plan on doing down the line as far adding performance parts to your engine. Good luck.

TMC

You could use some AFR 165's that accept pedestal mount rockers. Even Edelbrock performer 5.0's can use pedestal rockers and would still beabout the sameas ported GT-40's but 50lbs lighter.

I'm not against GT-40's but there are easier ways to get the same gains IMO.

Stroked91

of course there are easier ways lol wieght imn ot concerned with since its a only gonna be a street car. i just want something to have some fun with on the street

TMC

Well, if you are not worried about weight then why worry about more HP? A lighter car with less HP can be just as fast as a heavy car with more HP. If you suggest that either weight or HP isn't important than why worry about the other? What kind of gains do you think you're going to get from porting GT-40's? 10-15 HP? Consider that 50lbs = ~5HP in terms of performance. Given that and the fact that you're not going to gain a huge amount from port work, why would you feel that the equivelent to 5 HP isn't something you are worried about? Removing weight is like adding HP when it comes to performance so for roughtly the same cost and most likely an easier swap you could gain more by going aluminum than porting your irons.