Ok Boys,
I have exhaust headers casting number 3989310 (RH) and 3989343 (LH). I KNOW these are from a 71-71 BIG BLOCK 402 or 454.

What I don't know is what car they would have been found on. Can you guys give me any help on this????

They were used on Chevelle, Monte Carlo, GMC Sprint, Camaro, Passenger, NOT used on corvettes.

#3989310, RH 1971-72, passenger, chevelle, monte carlo, GMC sprint, camaro.
#3989343, LH 1971-72, same as above. http://www.camaros.net/forum/smile.gif
They list 402 & 454 for all these cars except the camaro is only for the 402.

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Steve
67 SS 396,4-sp
67 RS 327,4-sp
72 RS 350/350
69 4X4 suburban 350,4-sp
73 3/4 ton 454/400
http://www.geocities.com/stevocamaro

Darn, 70 RS/Z28 beat me to it. I hate it when that happens. http://www.camaros.net/forum/biggrin.gif

You code boys are truly amazing!!! Thanks!!!