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Old 10-24-2012, 12:36 PM   #9
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Join Date: Jun 2004
Chapter/Region: Tri-State
Location: Tuning 8/9sec Subies all over
10.8 [email protected] GR+
9.1/157mph 2015 STI


Originally Posted by DoctorNick View Post
You might want to contact P&L and see if they have started to offer their block re-enforcement kit. They also offer concrete jobs for the serious drag racers

Otherwise, I would just say get a dry sleeve and call it a day. The cylinder wall flex will be much more controlled.

But if your gonna stick stage 1 (what is that 300whp?) I can't imagine a stock 257 cracking at that pressure.
The concrete setup does not work.

Agreed any case will for for 300-600whp. The bracing helps if you are going to be pushing the motor hard, I have been running the pinned( cylinder braces ) for yrs, HKS/JUN one of them started doing it back in like 99' Nothing new or magical about it.

Originally Posted by Turn in Concepts View Post
We've done a number of 704 blocks including in the race car and have not seen a cylinder wall split yet.
Dear God THANK YOU!!!!! I dont know why everyone keeps on with this cracked 704 casing stuff. If you cracked a sleeve and make less then 550-600whp, you had to much cylinder pressure or knocked like crazy.

I have tuned plenty and run a 704 block in my own 10second 130+mph daily driver. 36psi, no cracked sleeves... although I dont think running 36psi on a stock unbraced liner is a good thing.
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