Running L92 heads and 200+ shot of nitrous?? Come in please.
02-23-2010, 05:32 AM
#1
Running L92 heads and 200+ shot of nitrous?? Come in please. So I want to build a 40X motor and run some L92 heads with the L76 intake combo. I am planning on spraying a 200 shot if nitrous initially then possibly jumping up to a 300 shot. If have been told that the L92 heads have issues mkaing big power like especially with nitrous because of the thin deck rails and they tend to blow head gaskets. If you have a personal experience with a similiar setup please share it with me along with any thoughts you have about my planned setup. Thanks
Tyler
Tyler
02-27-2010, 11:16 PM
#5
My iron 370 is all LS3 stuff up top. After talking with Pat G and Advanced induction about my heads, they never indicated there would be a problem knowing I'll be spraying 300. The only reason I could speculate as to why is because I have ARP studs throughout and they know that. Yeah paying $300+ for fasteners is almost crazy, but when you have a $10k motor, its cheap insurance. Motor is going in this next week.
~Austin
~Austin
02-28-2010, 12:24 AM
#6
I would not personally spray a 300 on any OEM head unless I was ready and willing to replace a HG at anytime. 300 seems to be the limit. Some get by and some don't. I have a buddy spraying a progressive 250 shot for 2 years and maybe 75 passes no probs but with my luck I doubt I could get by.
Edit: I read this as a 300 you should be fine at a 200 shot.......
Edit: I read this as a 300 you should be fine at a 200 shot.......
02-28-2010, 01:09 PM
#7
I would not personally spray a 300 on any OEM head unless I was ready and willing to replace a HG at anytime. 300 seems to be the limit. Some get by and some don't. I have a buddy spraying a progressive 250 shot for 2 years and maybe 75 passes no probs but with my luck I doubt I could get by.
Edit: I read this as a 300 you should be fine at a 200 shot.......
Edit: I read this as a 300 you should be fine at a 200 shot.......
My plan is to use all ARP hardware for this build. I however did want to use head bolts instead of studs because this motor is going into a Z28 and if I do pop a head gasket or something else happens I don't want to have to pull the motor everytime to take the heads off. You guys think ARP head bolts woul be a mistake?
Trending Topics
02-28-2010, 01:55 PM
#8
My plan is to use all ARP hardware for this build. I however did want to use head bolts instead of studs because this motor is going into a Z28 and if I do pop a head gasket or something else happens I don't want to have to pull the motor everytime to take the heads off. You guys think ARP head bolts woul be a mistake?
Mike
03-01-2010, 11:51 AM
#9
TECH Resident
iTrader: (13)
Join Date: Apr 2002
Location: South Elgin
Posts: 865
Likes: 0
Received 0 Likes
on
0 Posts
Never was told it was going to be an issue. I only milled .005 off of heads. Using head studs and factory mls gaskets. I think alot of people are blowing this thin deck issue out of proportion. How many of these people have actually had problems. I think the tune up has alot to do with it.
03-01-2010, 12:30 PM
#10
People that are blowing head gaskets typically have a bad tune. Many tuners/racers do not understand why you need to back off timing and why you need to have an ample supply of fuel right at the hit. Most gasket issues stem from bad tuning and not from bad head design.
__________________
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
LS1,LS2,LS3,LS7,LT1 Custom Camshaft Specialist For custom camshaft help press here.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
LS1,LS2,LS3,LS7,LT1 Custom Camshaft Specialist For custom camshaft help press here.
Custom LSX tuning in person or via email press here.
03-01-2010, 11:00 PM
#15
Well I think you guys have convinced me to go ahead and run a L92/L76 setup on my 408 I am going to build. I will just make sure to use good ARP hardware and that I have a good tune in it from a reputable tuner.
Last edited by tording99Z28; 03-02-2010 at 06:02 AM.
03-02-2010, 11:59 AM
#16
Teching In
Join Date: Jan 2007
Posts: 5
Likes: 0
Received 0 Likes
on
0 Posts
I just bought a set of LSA heads (caddy ctsv supercharged heads). Going to be HEAVILY ported on a 13:1 408 iron block with a carbed intake, solid roller custom cam. Going to spray 300 down it with an Induction Solutions direct port system. Motor should make over 700hp without nitrous. This combo is going in a 1990 lx mustang(3000ish lbs), hoping to get it to go 8.50's on the one system. We will see...
If it blows up Ill stick to driving my 2009 vette. LOL
If it blows up Ill stick to driving my 2009 vette. LOL
Last edited by wazslow; 03-02-2010 at 01:23 PM.
03-02-2010, 03:49 PM
#17
Wow, your combo sounds just like the engine I'm putting together, except I'm going with the LS2 block for weight savings, and it's going in a 2000 mustang. Other than that identical, LSA heads heavily ported and 13 to 1 408ci nitrous
