[Davec43]

Rebuilding my 454 planning on building a 489 or 496 depending on how far needs to bore out. Trying to keep it budget minded and was wondering if these are worth working with.

Heads
6272990

Intake
3933163

Goal is 550 hp

 

[Davec43]

Intake is off either a 396 or a 427
Heads 71-94 454 open chamber 425, 118.0 cc, 324 cc