6 liter iron block

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Mar 8, 2004 | 09:10 AM

Spinmonster

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6 liter iron block

What is the max safe bore size for the iron block for big power. .030? .060?

Mar 8, 2004 | 02:19 PM

1999_SS_M6

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From: Cincinnati, Ohio

First: quantify "big power." Second: Forced Induction, nitrous, or all motor? If you're thinking upwards of 700hp, I would stick to .030 and under. Also, having the block sonic tested for casting flaws, voids, or weak spots isn't a bad idea either... It could save you a lot of money in the long run.

Mar 8, 2004 | 02:54 PM

chino_man279

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Talk to the guys at AP Engineering------>
They will let you know what is safe for your application. It all depends on what you want to do with the motor as 99SS stated.

Mar 8, 2004 | 03:11 PM

BIGBOS

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.30 to .40

I wouldn't go any more than that............

Mar 8, 2004 | 03:18 PM

Pro Stock John

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Mine was 4.060 but I was told that most blocks have too much core shift but this one was very good.

Mar 8, 2004 | 07:48 PM

Chicago Crew UnderBoss

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4.030 to 4.040 for big spray usage or other Forced Induction or best reliablity and leaving room for prior rebuilds, etc. 4.060 is the max for N/A and 100 shot to play it safe BUT YOU MUST GET IT SONICE TESTED as many of the new blocks are to thin where it counts for the .060!