twin turbo exhaust size question
09-28-2012, 03:20 PM
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twin turbo exhaust size question I will be running 2 on3performance 70mm turbos. My motor is a forged 347. Shooting for around 900 to the wheels. I want to spin it to 6800rpm what exhaust housings do i need for a quick spool? .68 or .81? 9.5 to 1 compression.
09-29-2012, 02:46 AM
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i think i read somewhere that the .81s were good for 400+ cid....(like mine) and 347s should stick to the .68. But the rpms you're spinning may challenge that theory. i have .81ar on my t70s with the q trim wheel option.
