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Author Topic: 6.2  (Read 1557 times)
my63
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Defending myself from the DLWM crowd

6.2
« on: March 30, 2015, 06:31:06 PM »

What is the max overbore the 6.2 liter LS3/L99 can take, and what are you doing for pistons?

Most catalogs I have looked in only show a .005 over or .010 over.

Are rings the issue at .020?
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1963 Fairlane Bracket Car, 408", C-4, Canfields, Vic Jr. E-85
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moco
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« Reply #1 on: March 31, 2015, 06:52:39 AM »

Why? Just get one that's seasoned from the j/y and make 2k horsepower easy!!!!! Geeeeez!!!!!  :donatello:
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fast89stang
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« Reply #2 on: March 31, 2015, 07:10:57 AM »

cant say for sure. I think the sleeves are thin. I dont think much is recommended. I know on a iron 6.0 they dont want much more than .060, but some can go as much as .125 over. They say gen 4 blocks are more likely to be candidates for bigger bore. But the aluminum blocks are limited by their sleeves.
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364 stock shortblock, FTI cam, vic jr, 950 ultra hp, turbo 350, 4.10 gears-full interior. Best so far 6.3? 107.65 w/ 1.35 60ft. Plenty more to come.
my63
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« Reply #3 on: March 31, 2015, 06:26:48 PM »

Everything I've read says .020 is max over bore. But 4.085 pistons are like unicorns.

Another option is to put everything into a 6.0 block at .065 over.

I see so many changes from year to year it makes finding interchange info so much fun!
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1963 Fairlane Bracket Car, 408", C-4, Canfields, Vic Jr. E-85
Thanks to: Mark Sullens, www.marksullense85carburetors.com www.rebco-machine.com
my63
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« Reply #4 on: March 31, 2015, 06:27:43 PM »

Why? Just get one that's seasoned from the j/y and make 2k horsepower easy!!!!! Geeeeez!!!!!  :donatello:

6.2's are a little harder to come by from the salvage yard!
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1963 Fairlane Bracket Car, 408", C-4, Canfields, Vic Jr. E-85
Thanks to: Mark Sullens, www.marksullense85carburetors.com www.rebco-machine.com
fast89stang
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« Reply #5 on: March 31, 2015, 06:59:50 PM »

Make your own iron 6.2 from a gen 1v iron block. They can supposedly be bored .125 over.
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364 stock shortblock, FTI cam, vic jr, 950 ultra hp, turbo 350, 4.10 gears-full interior. Best so far 6.3? 107.65 w/ 1.35 60ft. Plenty more to come.
289nate
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« Reply #6 on: March 31, 2015, 10:28:30 PM »

Is the stock bore 4.060"? 
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my63
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Defending myself from the DLWM crowd

« Reply #7 on: April 01, 2015, 05:20:15 PM »

Is the stock bore 4.060"?

4.065 is stock for 6.2.
4.00 for 6.0
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1963 Fairlane Bracket Car, 408", C-4, Canfields, Vic Jr. E-85
Thanks to: Mark Sullens, www.marksullense85carburetors.com www.rebco-machine.com
fast89stang
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« Reply #8 on: April 02, 2015, 09:55:39 AM »

question is......why are you building a 6.2? lol
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364 stock shortblock, FTI cam, vic jr, 950 ultra hp, turbo 350, 4.10 gears-full interior. Best so far 6.3? 107.65 w/ 1.35 60ft. Plenty more to come.
289nate
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« Reply #9 on: April 02, 2015, 06:13:49 PM »

Interesting on the bore.  I'd look hard at these heads for the price if I were building a 6.2L for drag racing.  http://www.texas-speed.com/p-3948-prc-ls7x-265cc-cnc-small-bore-heads.aspx
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my63
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Defending myself from the DLWM crowd

« Reply #10 on: April 02, 2015, 06:53:14 PM »

question is......why are you building a 6.2? lol

My brother is, not me. I'm just trying to help him do it right!

He has a 55 Chevy pickup with a 5.3, a 1929 Model A with a 6.0, and now he has a 6.2 L99 and is looking for a 61 Impala Buble Top.
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1963 Fairlane Bracket Car, 408", C-4, Canfields, Vic Jr. E-85
Thanks to: Mark Sullens, www.marksullense85carburetors.com www.rebco-machine.com
fast89stang
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« Reply #11 on: April 03, 2015, 07:57:52 AM »

Ought to run good. I would love to get my hands on a 6.2. Still watching and waiting for one to come in that isnt warranty. But if it goes much longer, the 6.2 will be pulled from wife's deanli and my 6.0 will go in it.
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364 stock shortblock, FTI cam, vic jr, 950 ultra hp, turbo 350, 4.10 gears-full interior. Best so far 6.3? 107.65 w/ 1.35 60ft. Plenty more to come.
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