@ehpantera posted:You get what you pay for.
A very interesting engine for sure.
I had read previously that the A331 Torker needed some work to even the flow. It had 4 good runners and 4 bad ones. I suspect that's what was done there?
That's a lot of cam for a street car. Kind of a "Pro-street" profile but I have no doubts it's very effective on a track.
I personally like the A3 heads even over the C302's. The C's that I have seen prepped wind up with ports very similar in volume to the A's.
They are borderline for my 357 but they absolutely will light up a 383.
My cam is a 244@ .050, .606 lift. and that's about as much as I'd go on the street. As a matter of fact I'm considering going down to the 236. You need at least around .588 actual to make these heads work. Under that and you are wasting them.
I'd suspect that the Holley probably has better numbers overall then my 48ida's do but I doubt that the Weber manifold is overdone or that it could be improved anywhere. The only thing that you could do with it is lengthen the runners. They are already at 51mm.
Maybe they could be reduced but I don't see where that helps anything?
It already has line of sight to the valves and the distance is thought to be optimum.
I'd want to dyno with the 180° headers. I'd like to see where they peak on the dyno. I already think that it's at 6,500 now but the dyno would be the safe way to test that.
The other thing would be to see if the engine benefits from 51mm throttles v. 48. I suspect that it does but don't know what that does for street drive ability. It could be a negative.
Thanks for posting your build sheet.