Notices
Generation III Internal Engine 1997-2006 LS1 | LS6
Sponsored by:
Sponsored by:

RPMSpeed Updated Head Gaskets

 
Old 11-13-2018, 01:10 AM
  #1  
LS1Tech Premium Sponsor
Thread Starter
iTrader: (2)
 
Join Date: Apr 2016
Posts: 4,125
Default RPMSpeed Updated Head Gaskets

We are always trying to help our customers out and put out the highest quality product we can, SO we went back to the drawing board and decided to build in a very popular feature into our RPMSpeed MLS gaskets.
From now on ALL of our RPMSpeed HD MLS gaskets (with notched head provisions) will be .045-.046 thick. Even though they have a notch, they will work on any cylinder head/block combo up to 4.085 bore size (not including ls7 and 4 bolt only)
Our 4.8/5.3/5.7 head gaskets measure 3.934" BLUE $51.99



Our 6.0/6.2 gaskets measure 4.100" BLACK $69.95



(click above for direct links)

Now you dont have to spend a mint to get better quench and better compression ratio. On average they will add .2 of compression vs .053 gasket.

We still have the gm mls gaskets which are still .053 thick. But from now on ALL of our Rpmspeed HD head gaskets that come with the Rpmspeed Gasket kits and Complete rebuild kits are .045-.046.

THERE IS NO NEED TO REQUEST THE THINNER GASKET AND WE DO NOT HAVE ANY OTHER STYLE BESIDES WHAT IS LISTED. DO NOT CALL PM OR EMAIL ASKING OF WE HAVE ANYTHING OTHER THAN THE SIZES LISTED. WE WILL NOT HAVE ANY OTHER STYLE MADE.

I hope that was clear enough.
So if you want a thinner head gasket and dont want to spend $140+ for cometic/felpro, then these are the best option.

Last edited by [email protected]; 11-13-2018 at 02:07 AM.
tech@WS6store is offline  
Old 11-13-2018, 11:50 AM
  #2  
TECH Regular
 
Join Date: May 2015
Posts: 478
Default

So these would go nicely on an 862 headed 5.3 expecting to run around 20lb... looks like a nice option
Suncc49 is offline  
Old 11-13-2018, 02:55 PM
  #3  
TECH Addict
iTrader: (2)
 
Join Date: Apr 2006
Location: Pittsburgh
Posts: 2,283
Default

Not trying to start any crap but the GM MLS gaskets for LS1/LS6 are listed as .051 (at least according to Summit). Maybe the 5.3 and 6.0 gaskets are different.
wannafbody is offline  
Old 11-13-2018, 04:37 PM
  #4  
LS1Tech Premium Sponsor
Thread Starter
iTrader: (2)
 
Join Date: Apr 2016
Posts: 4,125
Default

We have personally measured .051 to .053 but have seen more at .053.
Not crap, but do you think summit measures the gaskets or they just use what gm printed in 2001 and just kept recycling?
tech@WS6store is offline  
Old 11-13-2018, 04:38 PM
  #5  
LS1Tech Premium Sponsor
Thread Starter
iTrader: (2)
 
Join Date: Apr 2016
Posts: 4,125
Default

Originally Posted by Suncc49 View Post
So these would go nicely on an 862 headed 5.3 expecting to run around 20lb... looks like a nice option
We have a few guys running boost and a customer that raced a whole season with a 250 to 300 shot at 8200rpm. They are a pretty good gasket esp for the money, and the best affordable gasket for notched heads too.
tech@WS6store is offline  
Old 11-13-2018, 05:09 PM
  #6  
TECH Junkie
iTrader: (40)
 
00pooterSS's Avatar
 
Join Date: Mar 2008
Location: Dallas
Posts: 3,569
Default

Originally Posted by [email protected] View Post
We are always trying to help our customers out and put out the highest quality product we can, SO we went back to the drawing board and decided to build in a very popular feature into our RPMSpeed MLS gaskets.
From now on ALL of our RPMSpeed HD MLS gaskets (with notched head provisions) will be .045-.046 thick. Even though they have a notch, they will work on any cylinder head/block combo up to 4.085 bore size (not including ls7 and 4 bolt only)
Our 4.8/5.3/5.7 head gaskets measure 3.934" BLUE $51.99



Our 6.0/6.2 gaskets measure 4.100" BLACK $69.95



(click above for direct links)

Now you dont have to spend a mint to get better quench and better compression ratio. On average they will add .2 of compression vs .053 gasket.

We still have the gm mls gaskets which are still .053 thick. But from now on ALL of our Rpmspeed HD head gaskets that come with the Rpmspeed Gasket kits and Complete rebuild kits are .045-.046.

THERE IS NO NEED TO REQUEST THE THINNER GASKET AND WE DO NOT HAVE ANY OTHER STYLE BESIDES WHAT IS LISTED. DO NOT CALL PM OR EMAIL ASKING OF WE HAVE ANYTHING OTHER THAN THE SIZES LISTED. WE WILL NOT HAVE ANY OTHER STYLE MADE.

I hope that was clear enough.
So if you want a thinner head gasket and dont want to spend $140+ for cometic/felpro, then these are the best option.

Flipping sweet!

And it's extra clear, but you know how the internet is, the clearer you make it the stupider the questions.
00pooterSS is offline  
Old 11-13-2018, 05:39 PM
  #7  
TECH Addict
iTrader: (2)
 
Join Date: Apr 2006
Location: Pittsburgh
Posts: 2,283
Default

Originally Posted by [email protected] View Post
We have personally measured .051 to .053 but have seen more at .053.
Not crap, but do you think summit measures the gaskets or they just use what gm printed in 2001 and just kept recycling?
Well, knowing GM, they might have more than 1 supplier or quality control is slightly off.
wannafbody is offline  
Old 01-10-2019, 08:08 AM
  #8  
KCS
Moderator
iTrader: (19)
 
KCS's Avatar
 
Join Date: Mar 2005
Location: Conroe, TX
Posts: 8,424
Default

I just got these installed on a 5.3L rebuild and they look to be pretty nice. They arenít marked to show which end is the front like the OEM gaskets, but anyone with half a brain should be able to figure it out by the water passage holes.




KCS is offline  
Old 01-10-2019, 12:32 PM
  #9  
LS1Tech Premium Sponsor
Thread Starter
iTrader: (2)
 
Join Date: Apr 2016
Posts: 4,125
Default

Right. We need to get a sheet in there to show which is front.
Looks pretty good tho!
Pappa Smurf approves
tech@WS6store is offline  

Thread Tools
Search this Thread

About Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: