Upping the boost on my 8-71 blown big block
Here's the set up. 468 BBC. 8-71 with 2 750's. Jetted square with 72's. 8 to 1 pistons. 61 top pulley, 54 bottom, for about 9% under-driven. Runs on 93 octane pump gas. Chassis dyno'd at 461 hp, 420 ftlb tq. I'd like to kick up the boost, without having to go to race gas. I figure swapping the pulleys would be way too much, even jetting up the carbs. So, what size top pulley can I go to? And how much higher on the jets?