Quote:
the RPM is noticeably taller and it is a single plane.
The Performer RPM is not a single plane. 
As far as good street manifolds go, the Edelbrock Performer RPM and the Holley Street Dominator are about the best there is for a fairly mild engine. The Holley SD is much shorter than the RPM, so I doubt it would work w/ the air grabber setup either.
Last edited by a9sec70cuda; 06/04/14 12:19 PM.
CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
| 
