More power from my stock 350

[chiro22]

Originally Posted by MikeB

If it's a used carb, I'd determine which jets, rods, and springs it currently has. And then go from there using the excellent user manual. Altitude, engine vacuum, coolant temp, and exhaust efficiency will affect your final settings.

Also, are you sure it's a 650? That would be their Thunder AVS series. The 1406 that you mentioned earlier has a totally different jetting chart.

That is a mistake, it's a 600.

[chiro22]

Originally Posted by rich weyand

The two characteristics of a vacuum advance canister that matter are 1) total advance and 2) vacuum required for total advance.

The vacuum advance cans on emissions-era distributors are usually too much total advance. The cans used on aftermarket distributors usually come in too early (with too little vacuum) for the SBCs in our trucks, which run higher vacuum than "high-performance" engines.

The AR23/VC1853 is right for non-emissions low-compression SBCs, with 7.5 camshaft degrees (15 crankshaft degrees) at 12" of vacuum. Most cans have more advance than that, and kick in at a lower vacuum level.

Was thinking of adding an HEI to my motor chevy 350 crate, is teh AR23/VC1853, the way to go?

[rich weyand]

The AR23/VC1853 vacuum canister on a stock HEI distributor is the way to go for a non-emissions crate engine.

[chiro22]

Originally Posted by rich weyand

The AR23/VC1853 vacuum canister on a stock HEI distributor is the way to go for a non-emissions crate engine.

really appreciate all of your help. Do you have any opinion on swapping out the 350 for a diesel?

[rich weyand]

Originally Posted by chiro22

really appreciate all of your help. Do you have any opinion on swapping out the 350 for a diesel?

Nope. Never done it.