Yesterday was such a nice day that I took a cruise out in the county, and stopped by Heavy Metal Custom Shop in town. The Edelbrock tuning had been going ok, but it was rich at the top end at WOT. Like…filthy pig rich, 10.7-10.8 on the AFR and would start to choke itself out.
So when I stopped by I asked them what jet sizes they had. They didn’t have the 0.92, but did have the 0.89 (stock is 0.95 on the 650 cfm 1906). So, being inspired by the Mike Finnegan “go big or go home “ school of thought, I took it apart and switched to the .089 on the secondaries.
For the warm up, filled up downtown with some Ethanol-free, splashed in some octane boost, and went back out in the county. Held my breath, rolled into it to full WOT, and let ‘er eat.
It stayed in the low 12s on the AFR , and pulled SO much harder. What. A. Difference. Shockingly better, to the point that I had to let off because I had the tach buried past 5k on the stock tach, and I didn’t want to hurt it.
When I get the finances sorted, next is that vacuum gauge so I can use the vacuum in conjunction with the AFR to set the step up springs perfectly.
Got home and gave her a spit bath. I’ll call it a win for the day.
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