compression question
compression question hey guys i have a quick compression ratio question and also a cam question.
i just picked up a lq9 short block. stock bottom end. i also got a set of tea stage 3 5.3 heads. 63cc stock but these were milled .020. my question is, what will my compression ratio be and also what would you say the max lift cam i can use with out fly cutting the pistons?
i just picked up a lq9 short block. stock bottom end. i also got a set of tea stage 3 5.3 heads. 63cc stock but these were milled .020. my question is, what will my compression ratio be and also what would you say the max lift cam i can use with out fly cutting the pistons?
Last edited by kliped; Aug 1, 2010 at 04:54 PM.
it can go fast but you will need supporting mods like intake headers and I will throw in a aftermarket cam your C.R will be in the 11:6 depends on what head gasket you get!! Here is a link were you can calculate your CR
http://www.race-cars.net/calculators...alculator.html
http://www.race-cars.net/calculators...alculator.html
Last edited by 09camaro383; Aug 6, 2010 at 11:46 PM.
TECH Apprentice
Joined: Oct 2008
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From: Wheaton, Illinois
it can go fast but you will need supporting mods like intake headers and I will throw in a aftermarket cam your C.R will be in the 11:6 depends on what head gasket you get!! Here is a link were you can calculate your CR
http://www.race-cars.net/calculators...alculator.html
http://www.race-cars.net/calculators...alculator.html
LQ9= flat top piston 10-1 CR
LQ4= dished piston 9.4-1 CR
he is running 5.3 heads milled i think it has 61cc do the math bore 4.000 stroke 3.662 flat pistons Gasket Thickness let say .048 it comes to 11.63:1
LQ4= dished piston 9.4-1 CR
he is running 5.3 heads milled i think it has 61cc do the math bore 4.000 stroke 3.662 flat pistons Gasket Thickness let say .048 it comes to 11.63:1
it can go fast but you will need supporting mods like intake headers and I will throw in a aftermarket cam your C.R will be in the 11:6 depends on what head gasket you get!! Here is a link were you can calculate your CR
http://www.race-cars.net/calculators...alculator.html
http://www.race-cars.net/calculators...alculator.html
