2005 Silverado

iTrader: (19)

A buddy of mine pulled it out of a LS1 GTO at his work.

Numbers on it are as follows

3725R/3655r

HR116 +4

J1954-06

This is all i know, any help would be appreciated.

Dustin

budhayes3

iTrader: (19)

The first numbers look like Comp numbers, but the HR116 is something that I've seen on Crane's site which stands for "Hydraulic Roller, 116 LSA", and the +4 should be 4* of advance ground in. Maybe try punching the top numbers into some cam manufacturer's sites and see if anything comes up...

2005 Silverado

iTrader: (19)

I guess this is what it is, according to SStroker on tech

Comp Hydraulic roller:
Intake is 230° @ .050 .592 lift (1.7), XER lobes. "most aggressive hydraulic roller profile to date"
Exhaust is 244° @ .050 .595 lift (1.7)Xtreme RPM high lift lobes.

LSA is 116° with 4° advance ground in.

Dustin

2005 Silverado

iTrader: (19)

i also think its a little big for my 10.5 comp ratio 6 liter, but the price is right so i might just say *** it hahah.

Dustin

budhayes3

iTrader: (19)

I'd think that cam would definitely want more compression than 10.5:1, but if it's cheap and you're into it, go for it

2005 Silverado

iTrader: (19)

I agree with that. My buddy said when you first started the car it would barely run, but after about 2-3 minutes it would just clean up and he questioned it had a cam at all. Also that was in a ls1 short block with ported 243's and a fast intake.

Dustin

skyhighsami

iTrader: (8)

I bet that cam would be mighty quiet on a 116 LSA. I would think you would need some healthy gear and converter. Just a guess, I bet it would run awesome. But the LS1 didn't have more compression than 10.5 so why would the 6.0 need more? Wouldn't that cam be slightly more tame in a 6.0 vs a 5.7 because of the added displacement?

2005 Silverado

iTrader: (19)

You only gaining a little though, Im going to talk to some people and get some opinions, Cam swaps are a pain (not really) but why do something to save money you know what i mean?

Dustin

budhayes3

iTrader: (19)

Even with the 116 LSA, there's a lot of duration and a bunch of overlap, I'm sure that even in a 6.0 you're going to hear that cam. (of course a ton of tuning will tame it up a bit) With 11+:1 compression and some good flowing heads it'll definitely be a beast up top. I totally agree that it'll need some healthy gear and converter for sure

Rick_Vor

iTrader: (36)

I'm definetely not a cam guru but those specs make it sound like an aggressive Procharger or Maggie/TVS cam. It seems like most if the larger duration cams for NA cars on ls1tech have a much tighter LSA.

But then again, I could be totally wrong

Rick