Question: L92 heads on a 4.125" bore?
Question: L92 heads on a 4.125" bore? I'm thinking of pairing up the L92 heads with the Katech block. I could go with LS7 heads but they are over twice as expensive. Plus I'm running this car on the street and the cam I choose will probably not breathe well above 7K RPM so I don't need a light, high-revving valvetrain.
However, I'm worried about the combustion chambers of the L92 which are designed for a 4.065" bore. The Katech block is 4.125, so the head will 'overhang' the bore by about 0.030".
Is this a big deal? Are there any downsides?
-ch
However, I'm worried about the combustion chambers of the L92 which are designed for a 4.065" bore. The Katech block is 4.125, so the head will 'overhang' the bore by about 0.030".
Is this a big deal? Are there any downsides?
-ch
If you had to guess--in terms of a percentage--what am I giving up in terms of performance over a true LS7 head combo? Again, I'm not going with a huge cam so high-RPM max power is not a big deal. I'd like to see over 525 at the wheels through an IRS.
-ch
-ch
Save the money and just do a 416 with L92 heads/L76 intake. You will meet your goals.
Or do this:
https://ls1tech.com/forums/showthrea...ighlight=shirl
Make a 427 from an overbored L92 block (.015" overbore) and 4.1" stroker crank: The factory bores were straight, no problem. If you don't want to go all the way to 4.100" on the L92 bore, why not go 4.080" with a 4.100" stroke and you get a very nice 427 cid...
Shirl Dickey
Or do this:
https://ls1tech.com/forums/showthrea...ighlight=shirl
Make a 427 from an overbored L92 block (.015" overbore) and 4.1" stroker crank: The factory bores were straight, no problem. If you don't want to go all the way to 4.100" on the L92 bore, why not go 4.080" with a 4.100" stroke and you get a very nice 427 cid...
Shirl Dickey
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Originally Posted by Greg Good
I have a suggestion. Bolt the bare L92 heads on your bare block and scribe the cylinders onto the deck of the heads. Then have a trusty head porter match it up.
What I'm wondering is if the overhang will cause any 'problems' i.e. quench issues, etc.
Originally Posted by TATER
If he heads are designed for a bore that's smaller than the Katech bore already is, how will the combustion chamber overhang the cylinder?
-ch
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