89gfoxlx

ported heads make about how much more than if they werent ported?

ih8chevy

thats hard to say, it depends on a lot more than just port and non port heads. depends on the rest of the setup. but i would say u would see a 25-30 hp gain with well ported gt40 heads. thats just a guess though, dont take it to the grave.

89gfoxlx

so on my stock lower end with gt40p heads ported and polished and gt40 intake ported and polished with the bbk 70 mm tb and 73 mm maf clibrated to 24 lb inj with a 255 lph pump, i should see over 300 rwhp?

ih8chevy

with a cam^^^ not on the stock cam u wont. probably around 260 wheel with stock cam. get a b cam or trick flow 1 cam is a great cam. and with that u will c close to if not 300 wheel.

drhoward

you will get good numbers after a tune, you will not get all the benifits without a dyno tune

89gfoxlx

Yeah I plan on having it dyno tuned when Im done. What would be better for rockers 1.6 or 1.7? Or do them heads come with 1.6's already?

w8less

when i you u do PLEASE POST THE RESULTS!

89gfoxlx

I definitely will. It will probbaly be a few weeks before Ill have time to tear it down.

cassidymustang

get some better heads then thos. Try procomp. they are aluminum and if you get a assymbled set and you port and polish them you will see way better gains then the gt40s