Heat riser part # 70 Chevelle BB

[SS4Real]

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.

[L78steve]

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.

[Ls6 Ragtop]

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

[SS4Real]

Thanks Chris.