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-   -   Lq4 heads question for boost? (https://www.performancetrucks.net/forums/internal-engine-modifications-158/lq4-heads-question-boost-526455/)

boost7.0L Feb 9, 2014 06:07 PM
Lq4 heads question for boost?
 
I have 05 Lq4 that will see about 15lbs of boost I have a set of 243's and some 317's not really sure which one to use. I prefer the 243's but dont wanna run to much compression. I'm also not sure which head gasket to run I have a set of MLS 5.7L head gaskets and a set of Ls9 head gaskets any help would be greatly appreciated thanks!

03sierraslt Feb 9, 2014 06:20 PM
I would run the 317's with the LS9 Gasket, why are you so partial to the 243's?

boost7.0L Feb 9, 2014 06:34 PM
Originally Posted by 03sierraslt (Post 5190599)
I would run the 317's with the LS9 Gasket, why are you so partial to the 243's?
Only because i payed 450 for them lol but i just picked up a 05 Lq4 from a chevy express van 3500 today for 1k with 90,000 miles. So im just pretty much trying to figure out which heads should i run thats all.

smokeshow Feb 9, 2014 06:38 PM
All depends on what fuel you have available.

boost7.0L Feb 9, 2014 06:38 PM
Originally Posted by smokeshow (Post 5190606)
All depends on what fuel you have available.
93 octane

smokeshow Feb 9, 2014 06:43 PM
317s then.

boost7.0L Feb 9, 2014 06:56 PM
Originally Posted by smokeshow (Post 5190612)
317s then.
ok thanks


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