five0fm

hey guys ive been talking to some of my mechanic friends and they said i should all go 408 stroker althought they dont agree on compression. im wondering if there is a ballpark range of hp with a 408 stroker 200-225cc heads (prob afr) holley systemax and custom cam and 9:1 or 10:1 or 12:1..thanks guys

.boB

A lot depends on your cam and where you drive. What you really want to know is effective cylinder pressure, or cold cranking pressure. You want that to be in the 180-190psi range.

My static compression is 10.8. With a big cam and high altitude, I usually run mid grade without any problems.

ruger311

go 408 with 225s and go with like 9:1 comp and turbo the bitch

WhiteWindsor

You can go as high as want. You need to decide what your plans arefor thethe engine. What will it be used for?Example's: will it be fortrack,street,track/street,show,weekend cruiser,trailor queen,future FI,etc.. Be honest with yourself about it's use then decide what kind of compression you want.

wrenchturner75

remember you can get decent power numbers with a 9.1 ratio and not have to run the hot sauce!

5spd GT

You will have to go with a different intake and larger.

11:1 is a fairly good cut-off point for pump gas.

Custom camshaft will assist you greatly.

mjr46

get a nice set of aluminum heads and keep compression at a pump gas friendly 10 to 10.5 to 1 and you'll be fine