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What do you guy’s think about the converter? I am currently running it behind my 340 and it works great. Just not sure if it will be right for a 4” crank. Also, I believe the Headman headers will need to be upgraded. Unfortunately, the header flanges are a bit smaller than the exhaust ports of the heads causing restrictions. If I run the current headers how much HP do you think will be lost?



The converter should "loosen up" quite a bit with the added torque of the 4" crank. Best thing to do before the new motor goes in is to sent to a GOOD converter guy, telling him the new combo.