In terms of jetting you are dealing with heads that flow 10% more then what the 389 heads did, your displacement has gone up by 4% and your running a much bigger Cam.
All these factors consider I would want my jetting to be on the safe side and start off with 70s in the center Carb and 72 jets on the end carbs.
This is up from a stock 62 on the center and 68 on the end carbs.
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Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs!
And he was not talking about 1/8 or 1/4 mile ETs!
1) 1940s 100% silver 4 cup tea server set.
Two dry rotted 14 x 10 Micky Thompson slicks.
1) un-mailed in gift coupon from a 1972 box of corn flakes.
Two pairs of brown leather flip flops, never seen more then 2 mph.
Education is what your left with once you forget things!
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