running 4.75 crank in aluminum block
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running 4.75 crank in aluminum block
hbstang September 23rd 2019, 4:33 pm
i have an option to use a 4.750 crank im my c anc motorsorts block.it has a bore of 4.625,would this put to much load on cylinder walls/ rings ? N/A engine build with a-441 heads.standard 10.320 deck block.
also how would e-85 do at 14 to 1 comp on this?
also how would e-85 do at 14 to 1 comp on this?
hbstang- Posts : 339
Join date : 2012-10-29
Location : socal
Re: running 4.75 crank in aluminum block
JBR-3 September 23rd 2019, 7:45 pm
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Last edited by JBR-3 on October 17th 2020, 3:13 pm; edited 1 time in total (Reason for editing : .)
JBR-3- Posts : 266
Join date : 2009-08-17
Re: running 4.75 crank in aluminum block
gt350hr September 24th 2019, 1:49 pm
Dan with a 6.7 rod it makes a 1.225 C/H and that is still OK. Cylinder wall loading is subject to skirt profile and length plus top ring land diameter. I think E85 would be OK with the aluminum head @ 14-1. You know i'm only a mile away.
Randy
Randy
gt350hr- Posts : 662
Join date : 2014-08-20
Location : Anaheim , CA
Re: running 4.75 crank in aluminum block
JBR-3 September 24th 2019, 6:03 pm
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Last edited by JBR-3 on October 17th 2020, 3:14 pm; edited 1 time in total (Reason for editing : .)
JBR-3- Posts : 266
Join date : 2009-08-17
BOSS 429- Posts : 2367
Join date : 2009-08-10
Location : Ill
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