Heat riser part # 70 Chevelle BB
 

Can anybody tell me what the correct part number is for a 1970 LS5 454 heat riser valve for a stock exhaust manifold and where is the best place to get one?

Thanks in advance guys.

Re: Heat riser part # 70 Chevelle BB
 

Got one for a 70 L/78 from GM parts. Yours should be the same. Don't have the part number handy but will look through my receipts tonight.

Re: Heat riser part # 70 Chevelle BB
 

Hi Jim,
GM still sells these. GM part # 3969903. I just bought 5 yesterday should cost you around $50.
Chris

Re: Heat riser part # 70 Chevelle BB
 

Thanks Chris.