keith72

I bought a complete exhaust system and will have to get front pipes made later cause I'm using headers. So, I thought of trying to sell the manifolds and new front pipes. I'm too lazy to research part numbers.....can someone verify that these are stock manifolds? As with most stuff on this car, just because a part came off the car, that doesn't mean Bubba didn't make do with what he had. Thanks.

Duke94

What engine? The ones on my 71' SB come straight down and connect to the pipe. Book shows a 72' BB manifold that looks like it. Part number #3969869 left hand.

Duke94

Sorry, didn't look at the second picture which looks like the correct RH SB manifold. Whats the number on it?. Upon closer inspection of the first one, clearly it's a SB. There's nothing that looks like it in "Corvette by the numbers".

mapman

What engine? Exhaust Manifold Casting Numbers:

1972 Early 200HP Left 3932461, Right 3989036 - Not drilled & tapped for AIR
1972 Later 200HP Left 3932461, Right 3932461 - Not drilled & tapped for AIR

1972 LT1 Left 3932461, Right 3932461
1972 LT1 also used Left 386711, Right 386711

NB2 (California) cars were drilled and tapped for AIR.

keith72

mapman,
Thanks for the reply. My engine's a 350 sb that according to the ID # was originally in a truck. I can't decipher much of the LH part # but it looks like 3856713 (?). The RH is 3932465.

Either way, your reply tells me they are not original manifolds. I won't try to sell them as such. Thanks.

Burgundy 69

From the photo, I do not see the AIR tube holes in the manifolds.

Mark

28buick

The manifolds are for 1969 to 1972 1/2 ton chevy two wheel drive trucks, 307 and 350.

keith72

28buick,
Thanks for the help. You're answer makes sense since the motor came from a truck.

Thanks all for the helpful replies.