Originally Posted by
5hane
Which block do you have?
If 200, is it long studded? - I would imagine keeping the head bolted down would be your limiting factor
426 is a lot of power for a 34/63, has it been modified? (billet wheel/ cutback blades etc)
It's a 200 block but has ARP Stud & Nut kit fitted which was done correctly to the ARP specs. Head is mildly ported and polished with bd16 inlet cam and AS Plenum and 65mm id electronic Throttle body so free flowing hence the low boost pressure. When on the standard inlet set up it was holding 30 psi on the same turbo.