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- - GMC V6 Cylinder Head 2436647 (https://67-72chevytrucks.com/vboard/showthread.php?t=793249)

aotte1

09-10-2019 09:01 AM

GMC V6 Cylinder Head 2436647

GMC V6 2436647 cylinder head, is this a magnum big port head. Searched and have not found any information about whether big or small port. Certain information shows as 401/478 engine head. Thanks for help determine port size.

Les

350TacoZilla

09-10-2019 04:43 PM

Re: GMC V6 Cylinder Head 2436647

I dont know about part numbers but I thought it was as simple as the exhaust port shape. If its square its a normal head and if it is rectangle its magnum, the magnum ports the height is like 1.5 times of width.

MusicMan70

09-10-2019 10:34 PM

Re: GMC V6 Cylinder Head 2436647

Link from 6066 Forum says it is not a magnum.

https://6066gmcclub.com/showthread.p...+number&page=2

aotte1

09-12-2019 11:51 PM

Re: GMC V6 Cylinder Head 2436647

Thanks, for the information on the cylinder head.

Les

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