Power level to switch from 4 to 6 bolt heads. - Page 2 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

2SS45th · 01-26-2014, 10:19 PM

If you are truthfully stopping at 750, you don't really need 6 bolt heads.

Bo White · 01-27-2014, 07:00 AM

I agree, once you pass the 800rwhp mark your in the market for a 6 bolt block.

Unreal · 01-27-2014, 07:59 AM

I disagree. Thick deck heads, good gaskets and studs and 1000 is no issues. I'm the only local I know making 1000+ on a 6 bolt setup. The other 3 locals making 1000+ are all 4 bolt setups. The issue is more in the stock ls3 heads flex/warp but goto a lsa head or aftermarket head and 1000 is no issue, hell 1100-1200 isn't an issue with a good tune.

Joe@CPR.com · 01-27-2014, 08:23 AM

Agreed w/ Unreal, we made basically 1200 rwhp on Blake's car and he has a 4 bolt block. It has already been said but I agree w/ it. Thick deck heads, studs, ls9 gaskets, good tune and let her rip.

Chris82xx · 01-27-2014, 11:06 AM

The need for 6 bolt is when you do heavy racing. 1 mile or so, auto-x, or something when you'll be running high rpms for an extended amount of time. That's when would need 6-bolt.

Camper · 01-27-2014, 11:09 AM

its not really the HP that is the requirement. Its the type of racing you do that is the requirement. Doing any mile events at 1kwhp+, then 6 bolt may be your best interest. But I made 1k+ and was fine with arp studs and LS9 head gaskets on a thicker deck aftermarket casting.

Now I wouldnt go out and make 15+sec WOT pulls and such..

Inferno LSX · 01-27-2014, 11:22 AM

6 bolt heads with studs. Make it better.

Sent from my iPhone using Tapatalk -

jessrayo · 01-27-2014, 11:36 AM

If you are more than 750 whp and do any type of venue other than drag racing, I suggest 6 bolt block and heads.

SSBUSDRVR · 01-27-2014, 12:35 PM

Thanks for the input. Set up for Street Strip. Have TVS EForce on 3.25 and probably drop it to a 3"(if decide to keep it) so I really don't see a 416-18 LS3 going much above 750 anyway. Guess will see what the Heads look like and go from there. Studs at a minimum. Since got to do a complete rebuild don't want to take shortcuts.

01-26-2014, 10:19 PM	#15
2SS45th Drives: 11 Seconds or Faster Join Date: May 2012 Location: Arvada, Colorado Posts: 2,797 View My Garage	If you are truthfully stopping at 750, you don't really need 6 bolt heads. __________________ I Ain't About That Stock Life.

01-27-2014, 07:00 AM	#16
Bo White Drives: 2015 Summit White 2SS 1LE Join Date: Feb 2012 Location: Vance Alabama Posts: 8,019	I agree, once you pass the 800rwhp mark your in the market for a 6 bolt block. __________________ Retired wanna be cylinder head porter 2015 2SS 1LE Clutch reservoir, Vararam DRX, ported TB, TSP 2" headers, MGW shifter Totalled: 2010 1SS Wilkes Performance/Eagle 416 shortblock, TSP custom valvetrain, PRC 260 heads, Edelbrock Pro Flo 102, th400 swap, 8" PTC 5500 stall= 535/435 at the wheels tuned Gen 3 Performance and Dyno 10.97 @ 124 full weight in 3100 DA CamaroFest X

01-27-2014, 07:59 AM	#17
Unreal Drives: 2006 Z06 Join Date: Oct 2010 Location: Gilbert, AZ Posts: 5,712	I disagree. Thick deck heads, good gaskets and studs and 1000 is no issues. I'm the only local I know making 1000+ on a 6 bolt setup. The other 3 locals making 1000+ are all 4 bolt setups. The issue is more in the stock ls3 heads flex/warp but goto a lsa head or aftermarket head and 1000 is no issue, hell 1100-1200 isn't an issue with a good tune. __________________ Nick Corvette Z06 -1200ish rwhp

01-27-2014, 11:06 AM	#19
Chris82xx Make your peace with God! Drives: 2011 Camaro SS/RS M6 Convertible Join Date: Dec 2011 Location: Dirty Jersey Posts: 1,595	The need for 6 bolt is when you do heavy racing. 1 mile or so, auto-x, or something when you'll be running high rpms for an extended amount of time. That's when would need 6-bolt. __________________ ECS base supercharger (NOVI 1500SL), ECS AlKY control kit, 92mm TB, ARH 1 7/8" LT's non-catted, Borla 3" exhaust, ID850 injectors, Squash fuel system, ECS Big Blower Cam, MGW short throw shifter, DSS 1000hp axles, LGW differential cover, billet caps, Tech AFX heater hoses, Pedders differential bushings, Eaton TrueTrac differential, PRC dual valve springs, Katech C5R timing chain, ATI balancer, Meilings oil pump, Pfadt Trailing Arms, Pfadt Tie Rods, Pfadt Sway Bars, Pfadt End Links, DSS Aluminum Driveshaft 811RWHP/719RWTQ UNDER MAJOR OVERHAUL!!

01-27-2014, 11:22 AM	#21
Inferno LSX Supercharged LSX Drives: 2011 2SS/RS Black/Carbon Fiber Join Date: Dec 2010 Location: City of Angels Posts: 6,741 View My Garage	6 bolt heads with studs. Make it better. Sent from my iPhone using Tapatalk - __________________

01-27-2014, 08:23 AM	#18
Joe@CPR.com Account Suspended Drives: 03 vette, 94 trans am, 04 gto Join Date: Jul 2012 Location: Mesa, AZ Posts: 995	Agreed w/ Unreal, we made basically 1200 rwhp on Blake's car and he has a 4 bolt block. It has already been said but I agree w/ it. Thick deck heads, studs, ls9 gaskets, good tune and let her rip.

01-27-2014, 11:09 AM	#20
Camper Banned Drives: 10' 2SS LS3 M6 Join Date: May 2012 Location: Phoenix,AZ Posts: 1,370	its not really the HP that is the requirement. Its the type of racing you do that is the requirement. Doing any mile events at 1kwhp+, then 6 bolt may be your best interest. But I made 1k+ and was fine with arp studs and LS9 head gaskets on a thicker deck aftermarket casting. Now I wouldnt go out and make 15+sec WOT pulls and such..

01-27-2014, 11:36 AM	#22
jessrayo Speed Freak Drives: 2013 ZL1 Camaro, 2016 Camaro SS Join Date: Jun 2013 Location: Ardmore, OK Posts: 2,637 View My Garage	If you are more than 750 whp and do any type of venue other than drag racing, I suggest 6 bolt block and heads. __________________ 2016 SS -AGP twin Borg Warner 7163 EFR's, LT4 mechanical pump, LT4 injectors, Walbro 255 low side, Castrol SRF. 734whp/759 tq 2013 ZL1 -ADM - 427 LSX 6 bolt, O-ringed block built by LME. Twin PT6466 turbos. RPM custom manual trans, RPS Quad carbon clutch, 9" Hendrix rear diff & axles. ADM/squash fuel system, Ron Davis radiator, Spal fans, AGP air to air, turbo plumbing. LPE oil cooler, rear bushing upgrade, roll bar...etc. rwhp 1400+... 212.5mph, best Texas mile to date.

01-27-2014, 12:35 PM	#23
SSBUSDRVR Drives: '11 2SS/RS IBM/BLK M6 Join Date: Mar 2011 Location: Central FL Posts: 3,748 View My Garage	Thanks for the input. Set up for Street Strip. Have TVS EForce on 3.25 and probably drop it to a 3"(if decide to keep it) so I really don't see a 416-18 LS3 going much above 750 anyway. Guess will see what the Heads look like and go from there. Studs at a minimum. Since got to do a complete rebuild don't want to take shortcuts. __________________ '11 IBM 2SS/RS Built and Tuned by Vengeance Racing Vengeance PCM Vengeance Racing Mast Black Label LS7 Headed 416 ProCharger Stage II D1X Race ,Monster Triple,Alky Control Meth Inj, Forgestar F14 Drag Version and a bunch of other blah blah blah.838/688 at 12lbs Street Friendly Last edited by SSBUSDRVR; 01-27-2014 at 01:00 PM.