snipelv

does anyone know the specs onthestock gt 40 heads

redpony88

are you talking about the old gt40's or the gt40 p's. the p's flow better so if you;re looking to get some old stock heads get the ones off explorers. as far as specs i'm not sure

camaroeater

search for a ton of info on here or the net....try searching, "GT40 flow chart".

redpony88

search on google cause the search on here is still acting up..... you can still find stuff here on the forums from google

snipelv

there not the p's but i have gt40 heads, typhoon upper and lower just having problems deciding on a cam i just dont get the lift and duration stuff yet still learning all that stuff

jtmustang

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jtmustang

as u see there is hardly a difference in the 2 gt 4o heads just a little more flow on the exhaust side thats why i would atleast open up the exhaust side a little and the bowls if i was u to get alll u can out of those heads or if your on a budget 1.7's but what cam are u thinking about?

snipelv

well i was told by a friend that i can upgrade the lifter and rockers and keep the stock cam but i want that cam sound, i was thinking tfs 1 or an e or x cam my friend said lunati but havent heard much about those there probably up there in price

jtmustang

man what are u doing with the car is it a daily driver or close to or strait out track/weekend warrior car?

as if its just a dd i would l would throw in a tfs 1 atleast if u are on a budget its a decent priced cam as its like 160 new or cheaper on ebay or?

and if its a track car i would look into something a little more aggressive.,something also to think about is if your using the stock block and pistons then u will have to watch ptv clearance for the cam and u wont be able to go to big without a custom cam and that will cost 300-400 bucks.also if u are upping the cam upgrading the valve springs in the heads is a must if your staying with the stock cam u'll be alright but still will want to check/replace the stock gt 40 springs.

snipelv

im only going to be driving it about 3 days a week and hit the track twice a month so nothing to major plus it is just a budget build car so a tfs 1 sounds about right.