quote:Originally posted by captaintobeys:
Thats why I keep saying Boss Spec. The Domed piston, different rockers( I think). The heads are D1AE-GA? heads, D2ZX dampner.
Is there a difference in cranks?
They are harder. They show a dimple on one of the counterweights were they where Brill hardness tested.
The connecting rods are also cast with a D1ZX, the rocker arms are hardened as are the push rods.
I don't remember what the casting number was on the heads but I do remember being told in no uncertain terms that the original Boss heads had a D1ZZ or D1ZX casting number in them and that the heads I was selling, which were Ford Service part Boss 351 heads were heads that "someone" took the regular 4v heads and modified to be pretend Boss heads. Yes. Ford.
Change the cam in that engine to around a .600 lift with around 248@.050 and around 72-75 degrees overlap and you are pumping right around 500hp.
A lot of people are not going to like the idle on it but if you want 500hp with 5.7 liters that's what you need to do, and you need much better headers than even the GTS headers.
Other than that and high port heads that is the hottest you will get in a Cleveland.
It's a very nice engine in my opinion but my opinion only counts with me. Even then, sometimes not?
