I thought fast burn was just another name for the OEM vortec castings? Yeah the heads are linked in post #5.


It's a 355, (.030" over) The Holley TB is probably a tad overkill, but I found it for $5 at a swap meet... It measures a tad larger than a BBC TB. Stock unmodified 4.3/5.0/5.7 TB probably wasn't quite enough for this engine?

Shannen , sounds like you're saying more MAP AE might be the answer..... But you're also saying that you increase the filter table values? This is in contrast to what I had read RBob post about? He was saying to decrease the filter tables. More than one way to skin a cat I suppose?