Are LS7 heads to much for a 408?

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Dec 20, 2005 | 12:44 PM

snketr

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Are LS7 heads to much for a 408?

Are they to big for the 4.030 bore? I'm building a 408. Thanks

Dec 20, 2005 | 12:52 PM

Nate_Taufer

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Yes you need a 4.06 bore minimum. Wait for the L92 heads to come out.

Nate

Dec 20, 2005 | 01:06 PM

snketr

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Waht are the L92 heads? And when will they be out?

Dec 20, 2005 | 01:54 PM

GPowrie

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ls7 small bore

we are also offering a small bore ls7 using a smaller valve and chamber, but still using a stock LS7 manifold, and stock ls7 rockers.

Dec 20, 2005 | 02:00 PM

Quickin

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Quote:

Originally Posted by GregP@ETPerformance

we are also offering a small bore ls7 using a smaller valve and chamber, but still using a stock LS7 manifold, and stock ls7 rockers.

For a 4.100 bore are your 265 41's still going to outflow the LS7 heads?

Dec 20, 2005 | 06:21 PM

Red12secZ28

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What size runner is on your small bore ls7 heads and what do they flow? Just curious.

Dec 20, 2005 | 09:52 PM

Cary@Perf-Induction

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From: howell mi

heads

Quote:

Originally Posted by Quickin

For a 4.100 bore are your 265 41's still going to outflow the LS7 heads?

they are really neck and neck. the ls7 is a little better is some areas and the 265 in others. REmember though, the 265 has a 2.100/2.125 valve and the LS7 has a 2.200 inlet valve. On a larger race engine, they sometimes like the larger valve.

As far as flow and port volume, I should have that answered by next week, Were still programming and machining, and being that it is computer generated, kinda gotta wait til we have a finished part.

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