I have a mild 383 sbc in a Chevelle street car (sees the occasional run down the strip) fitted with a set of Holley heads
part # cast on the head is 34r-11877a, but I cannot find info on that part #. but pretty sure they are 184 cc runners.
I know I would be better of with some AFR 195.s, but the budget is tight currently (maybe 195's later),
so are the holley heads worthy of some mild bowl and port work, would I get reasonable gains like maybe 40hp or so or am I wasting my time.
Has run 12.5 @ 108 with mild hyd cam, (dont no specs but it is mild) 10:1 hyper pistons, airgap, T350, 2800 stall, 3.5 gears I guess the engine makes around 400 currently.
Sees mostly street use only, so not really chasing any ET goals but would like to hop it up a little to maybe 450 or so if possible,
was planning on going maybe a bit more cam, mill a little of the heads and mild porting at this stage if worthwhile