Quote:

Aside from the issue of having cooling passages in the intake which normal manifolds don't use, a 413 is an RB and a 383 is a B engine, so different width intakes.



It has been my understanding that 383's had 906 heads from 68-70, the same heads used on the 440 so if B & RB engines use the same heads, shouldn't they be able to interchange intakes? -BD

Will the last one leaving the US please turn out the lights.