3T Head. How much to shave?

Webers, Cam selection and Ignition upgrades.

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Kenny727
Posts: 95
Joined: Sat Apr 11, 2015 10:25 pm

3T Head. How much to shave?

Post by Kenny727 » Thu Nov 19, 2015 1:58 am

I have an extra head I plan on shaving and replacing with the original to rebuild.
So as far as shaving I was to go as much as I can
I will be using premium
3t head on 3t block, stock internals, year is 82
What's the max shave before clearance issues?
Max shave and what's the compression?

BOBLOOK
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Re: 3T Head. How much to shave?

Post by BOBLOOK » Thu Nov 19, 2015 11:29 am

The day we learn to think

Kenny727
Posts: 95
Joined: Sat Apr 11, 2015 10:25 pm

Re: 3T Head. How much to shave?

Post by Kenny727 » Mon Dec 14, 2015 9:24 pm

Yeah I searched and found that thread, I see they are all saying to start with .50 , but there's no specific number, or what compression that would leave me at.
Has anyone done it before and can give me a garunteed safe number?
Id like to be able to just swap the heads over the weekend and be done with it,

Max shave for maximum compression using premium gas(92 I think)?

BOBLOOK
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Re: 3T Head. How much to shave?

Post by BOBLOOK » Mon Dec 21, 2015 7:45 pm

Never test it but if stock is 8.5 with 0.50 cut i would assume your can bump it to 8.8 unsure never test this before and it depend on the gasket thickness. Back then Ghetto build we use to make our own steel gasket very tinny but started to leak after few runs.
The day we learn to think

Kenny727
Posts: 95
Joined: Sat Apr 11, 2015 10:25 pm

Re: 3T Head. How much to shave?

Post by Kenny727 » Tue Dec 29, 2015 7:51 am

Alright I appreciate it bob, but any definitive awnsers yet?

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Spudenater
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Location: San Antonio, TX

Re: 3T Head. How much to shave?

Post by Spudenater » Sun Jan 10, 2016 1:38 am

I don't have a definitive answer, but keep in mind that if you're in the US (or have a motor that is) you'll be starting with a 9.0:1 compression ratio. Bob being in Europe got a slightly lower 8.5:1 stock ratio than we did state side.

Kenny727
Posts: 95
Joined: Sat Apr 11, 2015 10:25 pm

Re: 3T Head. How much to shave?

Post by Kenny727 » Sat Jan 16, 2016 12:52 am

So a .050 shave would bring 8.5 to 8.8
would it bring 9.0 to 9.3?
Either way that's pretty low gain considering how much is being shaved..
Any.100 shaved heads that worked lol?

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