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Callies has also introduced their new Apex line with performance comparable to their Magnums but using Italian forgings
375" at the bottom of the bores relative to OEM
These blocks are available in any level of finish from ready for "as-produced" to fully machined to a complete custom crate engine
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125" Rod Length w/
408 ci LS Short Block for NA Street - Seasoned GM Block & Callies Compstar 8-cwt Crank Bullseye Turbochargers Callies has also introduced theirThis short block is intended to be used in a naturally aspirated build. Its design is very similar to our 6. 0L turbo LS short block. This NA version has a stroker crank for more displacement, flat top pistons for a little bit more compression and a slightly different hone finish on the cylinder walls. Going to a 4. 000" stroke with a 4. 030" bore diameter brings us to 408 cubic inches. Our standard recipe NA engine builds with this short block
US$ 15.30
US$ 14.00
US$ 130.90