60' time and 4 hole 1" spacer

mderoy340 said
I'm still fine tuning my combo and I'm going to install a 4 hole 1" spacer. Anybody seen a 60' improvement adding a spacer. I use an AFR gauge so I'll make a jet change if needed to keep my 12.8 WOT.

4 hole spacer is usually used as a crutch for too much plenum volume or too big a carb - improves the signal to the carb.