The first thing you mentioned was the rear end gear. Using a 410 rear end gear is going to get burn a lot of gas. A buddy of mine is running a 370 gear with a 350 Chevy trans and is running 3500 rpms at 60 mph. You might want consider a 350 gear with an overdrive trans to lower your rpms. If you don’t modify the firewall and you run an HEI distributor it will be close to your firewall. I just modified my 46 firewall because my distributor was too close. Good luck with your truck.
Last edited by 7045george; 12/28/2021 4:25 AM.
