95lsxss

Ive got a 370 with rods/pistons, and vaspeed cam and valvetrain! Twin precision 6765s with .68ars for quick spoolup! Wondering how much Hp stock 317s can handle? Dont see the point on spendin 3k on heads when i plan to build BIGGER after i get used to this setup! Thanks in advance

hellbents10

iTrader: (10)

We have made 800++ to the tires on a few different vehicles using 317's with just a valve sprin upgrade.

I would reccomend a good set of valves at the least though at this point.

BadgeZ28

iTrader: (28)

Hellbents, is that a street driven combo or just a drag car?

Zombie

iTrader: (2)

I'm making at least 900 at the motor on 15-16psi and will make more when I turn it up.

black98ws6ta

iTrader: (77)

My car made 920 rwhp on a mustang dyno with a 408, bone stock 317 heads, stock valves, and upgraded springs.


The limit of the heads IMO will be the deck and the fact that a aftermarket head will seal with more horsepower.

95lsxss

Ok cool, another question! How fast do yall think it will spool/hit full boost? Everything is coated and blankets in the turbos... im just curious/anxious