where'd those come from? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

billsc30 · 06-20-2011, 09:54 PM

Hi all,
I have a really wierd pair of exhaust manifolds in my 68 C-30. The casting number is GM 9 T 471589. I found a pair that is close to these, and according to exhaust manifold world .com, they are out of an oldmobile cutlass with a 305. I have suspected that the motor in this truck is also a 305 for a while. does anyone have a casting list with this number on it? If it is a 305 manifold/engine, that figures considering where the truck came from. it was originally a 327 4 spd truck.

thanks for any help you can give here. BILL.

Longhorn Man · 06-20-2011, 11:06 PM

do you have a photo of them?

06-20-2011, 09:54 PM	#1
billsc30 Registered User Join Date: Jan 2010 Location: Mesa Az. Posts: 38	where'd those come from? Hi all, I have a really wierd pair of exhaust manifolds in my 68 C-30. The casting number is GM 9 T 471589. I found a pair that is close to these, and according to exhaust manifold world .com, they are out of an oldmobile cutlass with a 305. I have suspected that the motor in this truck is also a 305 for a while. does anyone have a casting list with this number on it? If it is a 305 manifold/engine, that figures considering where the truck came from. it was originally a 327 4 spd truck. thanks for any help you can give here. BILL. Last edited by billsc30; 06-20-2011 at 09:55 PM.

06-20-2011, 11:06 PM	#2
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: where'd those come from? do you have a photo of them?



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