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I have a 1990 Grandprix LE V-6 5 speed


gUiTo

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honestly i need a set of heads. I was hoping i could use the heads i got but i guess i need a newer intake. The heads i got came off a 1995 Lumina 10154743 casting.

 

The guy i got them from said they should work fine... from what i am hearing he is wrong.

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honestly i need a set of heads. I was hoping i could use the heads i got but i guess i need a newer intake. The heads i got came off a 1995 Lumina 10154743 casting.

 

The guy i got them from said they should work fine... from what i am hearing he is wrong.

 

A 1995 Lumina has a 3100 engine, and I don't think the heads are compatible. You'd need heads from a 3.1 MPFI engine. Anything from a Cutlass Supreme, earlier Lumina, Grand Prix, or Regal 3.1 should work. Hell, you could get them off a Cavalier with a 3.1 engine...

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If you have the 3100 heads, why not put 3100 intakes on as well? Since you're stripping to the block. The 3100 top end will give you a bit more pep.

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If you have the 3100 heads, why not put 3100 intakes on as well? Since you're stripping to the block. The 3100 top end will give you a bit more pep.

 

Ditto. You'll need the lower intake, plenum, tb, vacuum lines, coolant pipe, exhaust manifolds, and a few other misc. things, but it will give a good boost in power and gas mileage, and you already have the heads so why not...

 

Shawn

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Not be able to find a set of heads for a 3X00... heh, that will be the day of the apocolypse. The 2.8/3.1/3100/3400 have been used in so many different cars, they cant be hard to find.

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