Anyone know the difference between LS3 12617944 and LSA 12620947? Besides $7?
exhaust manifold gasket difference
Anyone know the difference between LS3 12617944 and LSA 12620947? Besides $7?
9.5 RPM (Red Passion Metallic)
Sport /Premium
"If the women don't find you handsome, they should at least find you handy"-Red Green
I would assume exhaust temps would be higher on the LS7 due to FI, so maybe it's a different material? Maybe Greg Was at Pace can steer you?
2009.5 MSM GXP 500ish N/A RWHP. Mods include but aren't limited to: Texas Speed 418 (6.8L) fully forged held together with ARP from top to bottom, PRC 255cc heads, Rick Crawford intake plenum, TB port, polish and tune, Roto-Fab 102mm CAI w/LS7 MAF, Kooks 1-7/8" headers wrapped with DEI, Corsa catless system, Circle D 3200 Stall, 3.45 final drive, BMR's complete street bushing kit and sway bars, Eibach Pro Kit, G-Force Axles, running on staggered VMR 710's with Bridgestone RE11 rubber. HSV triple gauge pack with Calais smokers kit mod, V6 tails, debadge/rebadge, V6 door handles, AU black door trim, Maverick Man under hood strut covers, & washer and bolt kit, fully corrected paint thanks to Adams Polishes and my hard work. Built with reliability in mind with some power for those times when you need to pass or go over a big hill. Just a poser, not a racer!
Sorry I don't have a clue either. I know the LS7 and LS3 were different (different gasket port shape), but never noticed a seperate part number for the LSA gaskets.
I don't stock the LSA gasket so I can't compare them.
888-748-4655
All Prices in posts are subject to change at anytime.
Check us out at www.PacePerformance.com
2009.5 Liquid Red G8 GT
2009 MSM Supercharged G8 GXP M6 - 11.51 @ 126.09
586rwhp/495tq
The LSA gaskets arrived today. I don't have a set of LS3 for direct comparison, but these do have a coating on the header side that I don't recall on the LS3 gaskets. Once I get my kooks back and do the swap back, I'll post a direct comparison.
9.5 RPM (Red Passion Metallic)
Sport /Premium
"If the women don't find you handsome, they should at least find you handy"-Red Green
I have the standard GM exhaust manifolds gaskets, same as what's in the L76. Uncoated.
Rest in Peace Charlie!
Sold
Just a GT
Originally Posted by RichsGreyGT
Looks like a Fel-Pro head gasket. The coating is smooth like Teflon I bet.
09 G8 GT/LR
06 GP/GT
01GP (wife's)
86 2+2 Areocoupe
76 TA 455-4sp
72 GTO 400-4sp
FWIW, a side by side image. The only difference I can tell is the additional coating.
9.5 RPM (Red Passion Metallic)
Sport /Premium
"If the women don't find you handsome, they should at least find you handy"-Red Green
I use the best header gasket no one know about. Put it on and zero issues period. http://catalog.remflex.com/
Last edited by Ben2009GT; 04-27-2015 at 07:30 PM.
515 rwhp - 416 Stroker - 2015
2009 G8 GT PSP, 6.8L Stroker 416ci,CM 228/234 .629/.629 LSA112 +2 Cam,PRC LS3 255CC CNC Heads,Trunion Rocker Upgrade,RCR Intake,FTI Stall 3600-3800,Trans Cooler,B&M flex plate,3.27 Diff LSD,UDP,1 7/8 OBXR LT SS Headers/SS, 3",Borla Mufflers,VCM OTR CAI,LS7 MAF 100mm,Patrick G. ECM/TCM Tune,Koni Shocks/Struts Yellow,Eibach Pro Kit Springs,LCA's w/Whiteline bushings,BMR Sub Frame Connectors,Spohn Tunnel Brace,BMR Fr/Rr Sway Bars,Suspension/Diff Bushings,PMT Rear Trailing Arms/Toe Links,Brembo's Front Brakes,Russell Street Legal Brake Line Braided SS,V8 6.0 Side Badges,GXP Diffuser,G8 Door Sill Plate,Red Shift Knob,SS Rim's,BFGoodrich g-force 255/35/20-285/35/20
Shit, I still have my stockers on.
Rotohack 102 intake - 102 MAF - TPIS 102 TB - TVS1900 ported & plated w 8 rib 2.5" front + OD rear
PnP Interchiller - RCR ported heads - RCR Lunati 219/231 113+1 - Forged Bottom End
ARH 2" LT headers - Solo 3" CB - MT DRs + M&H FRs on Weld RT-S
CTS-V fuel w Vaporworx - FAST 85s - Alkycontrol meth M15 + M10 - RCR tune
9.75@139.2 ? rwhp ? rwtq
Posting Permissions
Reply With Quote
