7.0 .. 427 ... where are the limits ?

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Sep 17, 2017 | 02:37 PM

turbotruck2007

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From: Ontario

7.0 .. 427 ... where are the limits ?

Soooo .. I finish the paint on this car today and owner says take it for a rip ..
Very fast car .. no doubt ... 505hp Z06 is no joke ... but I see that motor at 6-8 lbs being really fun.
Thoughts ???

Sep 17, 2017 | 02:50 PM

rkupon1

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Do it n post results...

Sep 17, 2017 | 05:00 PM

stevieturbo

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From: Norn Iron

Lots of variables, but if done right it should hold up reasonably well. But dont expect miracles.

Sep 17, 2017 | 05:47 PM

neverstop

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ls7 has thin sleeves, I think if looking for >750whp most people pull them and sell them before they blow up so they can recoup the money.

Sep 18, 2017 | 04:30 AM

turbotruck2007

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From: Ontario

Quote:

Originally Posted by neverstop

ls7 has thin sleeves, I think if looking for >750whp most people pull them and sell them before they blow up so they can recoup the money.

After reading about them on the Corvette forum https://www.corvetteforum.com/forums...ck-limits.html
I see where looking for a used one to build for boost would be a huge cost even after buying the motor .
Just doesn't make sense unless starting with a aftermarket block.

Sep 18, 2017 | 06:09 AM

a05c

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From: South Lyon, Michigan

I'd start by changing the valves if its stock. They're known for dropping valves and breaking the head of valves off.

Sep 18, 2017 | 06:38 AM

silvea

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So question. What makes this 427's walls any thinner than an after market aluminum block?

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Sep 18, 2017 | 02:20 PM

stevieturbo

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From: Norn Iron

Quote:

Originally Posted by silvea

So question. What makes this 427's walls any thinner than an after market aluminum block?

GM designed the block to do what it needed n/a, nothing more.

Any aftermarket block will have thicker liners and probably of a stronger material as the whole point of such a product is to be stronger.

Sep 18, 2017 | 02:32 PM

#10

ls13ater

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From: Lincolnton nc

I have a friend who ownes rpm transmission old yellow c6z, auto swap, d1 on 14lbs stock longblock went 5.9x in the 8th around 114mph, the upped the boost to 17 and hurt the motor, if the tune is right there will be no problem holding 7or8 here is the car

http://www.superchevy.com/features/1...corvette-z06/P

Last edited by ls13ater; Sep 18, 2017 at 02:39 PM.

Sep 18, 2017 | 02:34 PM

#11

kingtal0n

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From: florida

I think any engine in the world should have enough safety factor engineered into it to accept +/- 1/3 of an atmosphere.

You might drive to sea level, or slightly below it, for some reason.