Jpscustoms
New member
- Joined
- Feb 17, 2008
- Messages
- 684
getting ready to build twins for my fummins, he351cw over s475. My question is how should i spec out my 475? I want quick spool and towing, im gunna fuel it with sdx 5x.012, ported head, and diesel pros killer b cam. So should i go with the 1.26 or 1.10 a/r and 83 or 88mm ind??