Re: Improving afr 290s
The valve job is probably the most critical part of that head's performance.
Agreed. The shop I work with will examine the AFR valve job and guides and improve as needed. They also have a busy flow bench and they'll flow them and port match them to my intake.
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1971 Monte Carlo SS454-496ci 600hp
1999 Trans Am-500hp
2003 Iszu Ascender XL Limited V8