Headgasket Choices? (boost)
Headgasket Choices? (boost) Whats the choices for head gaskets, 5.3 bore? I was thinking about LS9 but I really dont like the bore size of that gasket compared to my 5.3 bore. I do like the quality and price of the Ls9...However I see Fel pro has a couple MLS gaskets, but dang....I'm gonna spend 200 bucks vs 90 bucks for ls9. My buddy tells me he runs the ls9 on 5.3 boost motors all the time...but I just fear I may be giving up compression, sealing capacity and adding some detonation sensitivity. My piston is .003 in the hole, dish piston, max of 20-22lbs of boost is the plan. I prefer to not run one of those graphite gaskets as those junks make a mess if you have to pull heads. Yuck. Any other cheaper choices than the fel pro? Just run the Ls9? Should I set my quench at around .045?
Did a search on here for head gaskets. Found nothing. But by chance when reading a thread on cylinder head tests, In the thread, WS6 store posted they have some gaskets deigned for 4.8/5.3 heads to handle boost. They are MLS, and awefully cheap, the thickness that I'd choose..... Almost too good to be true. Anyone use these yet? If You had a bad experience and dont want to start any poop, Pm me. heres a link
http://www.ws6project.com/user_stor/...oducts_id=6909
http://www.ws6project.com/user_stor/...oducts_id=6909
Never had a problem with the factory mls gaskets. Never ran more than 17 psi.. but a good tune, good head/deck surface, and good bolts... there will not be a difference between ls9 and the 5.3 mls gaskets. Smoke and mirrors imho.
If your running 25-40psi+.. you are looking at fire rings and 6 bolt setups. Below that... I’d just use the gm mls
If your running 25-40psi+.. you are looking at fire rings and 6 bolt setups. Below that... I’d just use the gm mls
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Verdad Gallardo Never had a problem with the factory mls gaskets. Never ran more than 17 psi.. but a good tune, good head/deck surface, and good bolts... there will not be a difference between ls9 and the 5.3 mls gaskets. Smoke and mirrors imho.
If your running 25-40psi+.. you are looking at fire rings and 6 bolt setups. Below that... I’d just use the gm mls
If your running 25-40psi+.. you are looking at fire rings and 6 bolt setups. Below that... I’d just use the gm mls
perfect. Thx for the info!
I ran 12psi with stock graphite 5.3 gaskets and no issues. Pulled and ran MLS LS1 GM gaskets and swapped to new non knotched heads $36 for the pair. On my other 5.3s I run the cheap $100 eBay complete gasket kit MLS head gaskets for boost. I’m talking about $90-100 full kits top to bottom and haven’t had any issues and the gaskets a good quality MLS.
I ran 12psi with stock graphite 5.3 gaskets and no issues. Pulled and ran MLS LS1 GM gaskets and swapped to new non knotched heads $36 for the pair. On my other 5.3s I run the cheap $100 eBay complete gasket kit MLS head gaskets for boost. I’m talking about $90-100 full kits top to bottom and haven’t had any issues and the gaskets a good quality MLS.
for the price it’s like $52 for the whole top end kit. I never measured them. They are at least as thick as the stockers. I have a few sets i could measure them out after thanksgiving. They are a 3 piece if I remember correctly 2 thin layers and 1 thick.
https://www.ebay.com/itm/Head-Gasket...cAAOSw6vZdgQ-B
https://www.ebay.com/itm/Head-Gasket...cAAOSw6vZdgQ-B
TECH Apprentice
Joined: Jul 2017
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From: Stephens city VA
