Exhaust Headers for my 1970 Corvette BB RamJet 502 GM crate motor
I am in the middle of installing the Ram Jet 502 GM crate motor in my 1970 BB coupe. Unfortunatly I have hit a bump in the road!! Does anyone know where I can get a set of headers and pipes for a side pipe application. NOT Holley,aready know they won't fit. (see 70vert's post on Holley BB header sidepipes). I am looking for something similar to the Stahl small block model #115 that Rolling Thunder turned me on to. Their web site only indicates small block,but I have an e-mail request in to see if they have one for the 502. My guess is, not likley. I would like to either interface to my stock side pipes ( not the best solution for performance) or get a fabricated 3" side pipe that would fit under my fiberglass stock looking side pipe covers. The 502 Ramjet has "Edelbrock built for GM" aluminum heads that have a clearance "challenge" between the 502's lower head bolts and my stock corvette cast iron manifolds. To "help" elevate some of the clearance problem I have found a set of ARP Head bolts that are a little over 1/8" lower profile. That should help but not sure if it is all that will be needed. A set of Headers with their header flange would have a easier interface since the flange could be notched to avoid interference. I also need to check spark plug clearance since it looks like they are slightly different from the stock 454 heads, GM Pace Performance said their would be no problem, but that comes from someone that said all accessories would bolt right up!!!!!! I talked to Headman Headers and their Tech guy said the Model 68210 would not work with the aluminum head 502. With further questioning, I determined that it was this bolt clearance problem that probably could be fixed with a little grinding, and a spark plug clearance issue. Besides only having 1 3/4 primaries, the last one is what really scared me away. Anyway, has any one had experience with the RamJet 502 and can provide any help in this area???
Re: Exhaust Headers for my 1970 Corvette BB RamJet 502 GM crate motor (Bullshark)
Welcome to the forum Bob, glad to you've checked in! :cheers: If you want the info on Stahl headers, go bach to the page you were at and look in the top row of the screen and click on BB Chevy. Click on 215 and at the bottom of the page you'll find the 216's, Corvette Bigblock with high port heads.
You'll get lots of great info here. We also need to see picks of your stable. Pretty nice collection of sharks!