Quote:
Originally Posted by SD455DJ
You'll be fine with the 2.25" outlets. My stock 455HO did pretty good on the dyno (430 hp @ 4900 rpm/535 lb-ft @ 3500 rpm) with factory original RA manifolds with 2.0625"/2.125" outlets, so your larger outlet RA manifolds will work fine on your 400.
Dennis
|
Cool! I'll have to measure mine.
The Parts Place had a few sets on eBay. Next morning they were sold out. Not sure you can find 2.25" now either.