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Cylinder heads swap

Tiny
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  • 1971 JEEP GLADIATOR
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Want to know if regular 350 heads will fit on my big block Buick 350 motor?
Tuesday, April 14th, 2020 AT 5:42 AM

9 Replies

Tiny
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Good morning,

Please explain?

Big block for Buick is the 400, 430 and 455.

All the heads are different even with the 350 small block.

Roy
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Tuesday, April 14th, 2020 AT 6:31 AM
Tiny
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It's a Buick 350 I am told it's a big block or stroker motor.
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Tuesday, April 14th, 2020 AT 11:31 AM
Tiny
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Sorry, it is not. They were inaccurate. The 350 is a small block in the Buick line. The big block, as I stated, starts at the 400 and goes up to the 430 and the 455.

Roy
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Tuesday, April 14th, 2020 AT 11:36 AM
Tiny
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I just googled to confirm
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Tuesday, April 14th, 2020 AT 11:50 AM
Tiny
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Sorry, I grew up with these engines and rebuilt them and swapped them.

Irregardless, the heads will not work on any other engine. If you have this big block 350, you need the exact heads for that engine. Heads from any other engine will not fit.

Google is not the best information source for this. This is reality.

Roy
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Tuesday, April 14th, 2020 AT 11:54 AM
Tiny
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Pontiac, Oldsmobile and Buick had them but not GM they have the same block as the 400 440 etc.
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Tuesday, April 14th, 2020 AT 12:14 PM
Tiny
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Okay, sorry you disagree but you will get the same response if they know what they are talking about.

I am sorry you do not understand.

Roy
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Tuesday, April 14th, 2020 AT 1:18 PM
Tiny
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Sorry, you are too lazy to double check.
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Tuesday, April 14th, 2020 AT 3:54 PM
Tiny
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I am not lazy. I lived through those years and witnessed them first hand.

Hope you find your answer.

Roy
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Tuesday, April 14th, 2020 AT 4:00 PM

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