So i'm finally going to be installing a cam here in the next 2 weeks. Im ordering the springs, pushrods, and ls7 sprocket today. I've got a 5.3l with the DOD system in it and I keep getting mixed reports about the lifters in it. Some say they are weak and will break and some say they are good. I would prefer not to pull the heads if I don't have to but if they are no good I need to know. Does anyone know for sure?
Chris, it kind of depends on how big of a cam you are gunna go with, what type of cam lobe design, and how stiff of valve springs you are gunna use.
It is known that the DOD lifters ARE weaker when used with Comp's XE-R and LS-K lobes due to their steep ramp rates. Also, anything over .580 lift will put a strain on them. What is the cam size you wanna go with?
2000 ECSB 6.0L
TORQUER V2 CAM ● COMP 918's ● 7.4 HARDENED PUSHRODS ● K&N SERIES 77 CAI ● 80mm BBK ●PACESETTER LT HEADERS AND 3'' ORY ● SUPER 40 FLOW ● 3000 STALL ● 4.10s ● BUILT 80e ● VORTEC PERFORMANCE TUNE ● MSD 8.5mm PLUG WIRES● ELEC. CUTOUT ● UD & ALT PULLEYS ● FLEX-A-LITE E-FANS ● 22" CENTERLINE STINGRAY III's ● LUND FIBERGLASS TONNEAU ● 2" LEVELING SHACKLES ● 12K HID LOWS & FOGS ● LEDs ● DEBADGED ● WHITE-FACED ESCALADE GAUGES ● KICKER 450.1 ● 2-CVR 10's ● DS60's ● K693's
Yeah, the cam I have picked is .588. I'm going to have to change for sure.
1969 Chevy RCLB C10 350/TH400 SOLD
2007 Chevy RCSB 4.8 4x4 LS SOLD
2008 Chevy RCSB 5.3 4x4 LT SOLD
2010 Chevy CCSB 6.2 4x4 LT SOLD
2005 GMC CCLB DRW 6.6 Duramax 4x4 191,000 and counting
2013 FORD CCSB F350 6.7 Powerstroke 4x4
May want to try some LS7 lifters.Originally Posted by pl4yboy
2004 Silverado Crew Cab, forged iron 5.7, STS w/MP turbo, 10+ psi, FMIC, Tial 50mm BOV, Vic Jr, Snow performance meth, MTI Stealth cam .220/.220 .581/.581 115lsa, Comp chromoly pushrods, Yank TT3000 stall, LS1 Efans, 160 tstat, Trucool 40k trans cooler, 60# injectors, Walbro fuel pump, Patriot springs, Built 4l65E w/billet input & output shafts, Eaton posi, SD tuned...all installed by Klein North Automotive
The Cadillac lifters (from the LSA, or whatever it's called) are supposedly a little better than the LS7 lifters. Cheaper too
2006 SilveradoLittle Black Bitch
I believe there are the LS7 lifters which are good up to 7k rpm and there are Caddy racing lifters that are good up to 8k rpm. The racing lifters are more expensive.
2004 Silverado Crew Cab, forged iron 5.7, STS w/MP turbo, 10+ psi, FMIC, Tial 50mm BOV, Vic Jr, Snow performance meth, MTI Stealth cam .220/.220 .581/.581 115lsa, Comp chromoly pushrods, Yank TT3000 stall, LS1 Efans, 160 tstat, Trucool 40k trans cooler, 60# injectors, Walbro fuel pump, Patriot springs, Built 4l65E w/billet input & output shafts, Eaton posi, SD tuned...all installed by Klein North Automotive
Doubt my 5.3 needs to go any higher than 7000. LS7's should be fine.
1969 Chevy RCLB C10 350/TH400 SOLD
2007 Chevy RCSB 4.8 4x4 LS SOLD
2008 Chevy RCSB 5.3 4x4 LT SOLD
2010 Chevy CCSB 6.2 4x4 LT SOLD
2005 GMC CCLB DRW 6.6 Duramax 4x4 191,000 and counting
2013 FORD CCSB F350 6.7 Powerstroke 4x4
Can they reduce performance when you are running stockers? My mechanic told me today that I need to replace my stock ones for high performance lifters ($250-300) because they might be stealing 30-40 hp.. Honestly I don't think so but what do you all think??
06' Silverado RCSB 5.3L 4wd..
PERFORMANCE: Cam, Springs, Pushrods, P&P heads & 3 angle valve job, Injectors, PS LT's & ORY, Nelson Tune, Catback, CAI, Comp Cam Double Timing Chain, HP Oil Pump, UD Pullies, ARP bolts, Stall, TBS, 4.10's, Iridium NGK's, G-80, 160 t-stat, HD-2 & Vette Servo, 46,000 tranny cooler, 75-125hp shot of funny Gas..
HID's Hi, Lows & Fogs
Waiting to be installed: LC-1 WB & Standalone system
This is a topic based solely on NNBS lifters. Make a new topic please.
Also, I'd just like to point out from your previous posts... your mechanic is a complete fool.
1969 Chevy RCLB C10 350/TH400 SOLD
2007 Chevy RCSB 4.8 4x4 LS SOLD
2008 Chevy RCSB 5.3 4x4 LT SOLD
2010 Chevy CCSB 6.2 4x4 LT SOLD
2005 GMC CCLB DRW 6.6 Duramax 4x4 191,000 and counting
2013 FORD CCSB F350 6.7 Powerstroke 4x4
almost goign to garrenty this statement. he is used to old school dinosaur motors and how the ABCs of them work.
you dont need to upgrade lifters unless youres are noisey
2002 Lightning - GT headed 5.5Litre w/ Twin 7665s
2002 Silverado - 427Lsx w/ Twin gt4202s
2010 Silverado crewcab Z71 - 5.3litre w/ procharger
2000 Wrangler - 5.3litre with some stance
2014 Xsport- 3.5 Eco boost
412 Motorsports
it ain't that I'm too big to listen to the rumors, It's just that I'm too damn big to pay attention to 'em..That's the difference
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