232/228 610/595Originally posted by RedHeartbeat@Aug 22 2005, 12:38 AM
Well, I just purchased a HUGE camshaft for this engine. I think it will be be pushing the limits of a set of 918 valve springs. Its a COMP cam and the specs are 232/228 610/595 113. The seller says it is a turbo grind. Hmmmm....where might I be going from here?
You gonna be getting one of them STS turbo mufflers?
Now to to be serious. Wouldn't this cam almost require dual springs?
Base: 2004 Victory Red Silverado 1500 2WD RCLB, LR4, 4L60E, 3.73, HD Suspension, P245/75R16 Tires
Mechanical/Performance: Nelson 93 Octane Tune (See Slamma's CarDomain.Com Page for more details)
It is definitely border line. Comp 918s are good to .600. My Comp rep said I may be able to get away with the 918 ovate wire springs. I guess I'll see when it goes in the engine. I'll do one cylinder up and check it out for spring bind. For $185 shipped for a brand new cam I figured I couldn't go wrong. That intake duration is huge!! I might need to run my brakes off the power steering pump since there won't be much vacuum at idle.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
I'm getting ready to buy some larger injectors and I think I'll go with 42s. Which ones are going to be a direct plug-in for my wire harness? Delco/Lucas or Ford Motorsports?
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
I think all three. I went with the Delco's. I just couldn't bring myself to put Ford parts on my truck lol! I think Allen has a good price on those injectors and I think they are in stock!
2006 Superior Blue Trailblazer SS AWD, Stock as a rock
Sold: 2002 GMC Sportside Denali front end with a 2002 LS1, FLT level 5, Yank 2600, Trick Turbo, T76, Nelson intercooler, 60LB injectors, Warbro fuel pump, Eaton locker, Magnaflow, 3.42, Nelson Performance Tuning (speed density).
Sold: 1981 GMC LB RC 1500 2002 4.8L 4L60E 12 bolt 3.73 Richmond Lock Right AC PS Nelson Performance tuning
What injectors would go good with a 224/220 - 581/581. I have stock 2002 injectors right now (probably 28#).
Thanks
97 GMC, 2002 LS6.
1991 GMC Syclone #1428
Those are good to almost 400 hp they say.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
They are the same as the Z06 so you're right, 405 HP. What would I gain from a larger injector with the cam? I have an extra set of heads that I could have port and polished but I'm going to stay stock for now. I'm all LS6 except for the heads which are 241's instead of 243's.
97 GMC, 2002 LS6.
1991 GMC Syclone #1428
first number is at 100% injector duty cycle
second number is at 80%
These numbers are based on average brake specific fuel consumption of .5, engine efficiency.
97-98 LS1 458/366
99-00 LS1 429/343
01-03 LS1 458/366
Bosch 30 554/443
Bosch 36 666/532
Lucas 42.5 786/629
MSD 50 923/739
Siemens 55 1016/813
MSD 72 1330/1064
Bendix 82 1515/1212
MSD 96 1774/1420
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
What # injectors does a stock 345 hp LQ9 come with?
Just got my 3600 Vig stall and WOW!!! that put the rotating mass on one hell of a diet. The stock convertor weighed in at 45 lbs and 12.375 diameter and this new one is a tea-toting 28 lbs at 10.5 diameter. That ought to help the 60 foot times a whole hell of a lot!
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
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