[Gmecm] TBI 350

[Robert W Hughes]

> Recently, I swapped engines.  The new one is a brand-new GM 350 with a Crane
> Cams 2032 roller camshaft and high-swirl TBI heads.  The static compression
> ratio is 9.2:1, and the dynamic compression ratio with that camshaft should be
> about 8.7:1.  I changed the fuel injectors from the 40 lb./hr. units to 55
> lb./hr. units like a 350-equipped half-ton pickup truck would have.

You increased engine size by about 15% but injector size by almost 40%. 
If you didn't change the injector constant, you might be running up 
against the BLM/INT adjustment limits in the software. This would mean 
that after the ecm leaned everything out as much as it could it was 
still too rich. maybe.

-- 
Robert W. Hughes (Bob)
BackYard Engineering
29:40.237N, 95:28.726W or perhaps 30:55.265N, 95:20.590W
Houston, Texas "The city with too much Oxygen"
rwhughe at oplink.net