General Category > Quadrajet Carb Talk and Tips
Lowering BSFC numbers on dyno
tenxal:
No, I haven't.
Nice workmanship! :)
77cruiser:
It's not mine, borrowed the pic. I guess if you have opportunity to dyno it might be worth a try.
tenxal:
Touching back on this....taking the secondary air bleeds from .039 to .043 made a definite improvement. Cleaned up the BSFC and it averaged 4 hp and 4 lb/ft of torque more from 5,600 to 7,000. Peak power was up 5 h.p. The power from 6,000 to 7,000 only varied 2 h.p. so it's a nice flat curve just where the engine spends most of it's time.
Taking the bleeds up to .0465 did show a slight loss.
I've got to rob some bleed tubes from some core tops, redrill to .043 and reinstall.
77cruiser:
Let us know if you try the ones like in the pic. That was a nice improvement just making them bigger, to a point.
Navigation
[0] Message Index
[*] Previous page
Go to full version