bfurches

iTrader: (12)

I am getting ready to perform the VVT delete on my L92 (complete engine from a 2008 Cadillac Escalade). I was curious, in stock form will this motor have enough piston to valve clearance with the GM ASA cam (12480110)?
.525/.525 lift
226i/236e @ .050
110lsa

Have any of you guys run this cam on a carb setup?
I know GMs 376/515 crate engine is a ls3 with 10.7:1 and makes 515hp...
So is this pretty close to what I could expect to make with my carb L92 @ stock compression (10.5:1).

Also...will the standard ls6 valve springs be what I need to run?

I also plan on hitting the motor with a small shot (100hp).

Thanks

litle88

iTrader: (20)

With stock compression?
If you are dead set in using this cam then I'd mill the heads for a little more compression, the Ls6 valves would be fine BUT since the heads are coming off, why not upgrade them while you are there.
Your gonna want a bigger cam after a while, ask he how I know
Just my .02

allblowdup

I think the ls6 comes with the same valve springs as the ls515/376 and ct525. They are yellow. Unless you are going carbed the cam will not be right l/c is to close and it does not have enough ex dur. The ct525 engine makes close to 560 hp@6500 so with a carb you can be pretty close with that cam.

bfurches

iTrader: (12)

Yes...I am goin carb. Thanks!

Damian

iTrader: (89)

I do agree that the cam does like a lot of compression. It bleeds off a lot so I'd recommend a bare min of 10.5:1 compression. Otherwise I think it'll work fine. That's one of my all time favorite cams. Sounds downright nasty @ idle too.

SweetS10V8

iTrader: (4)

Check PTV before you mill the heads.

Damian

iTrader: (89)

With L92's?

You could fit about 3 school buses in between the pistons with that cam and unmilled L92's. There's plenty of room to mill .030-.040 and still have clearance. I've cut L92/LS3 castings .030 with a LOT larger cams than the ASA with no issues.

garygnu

get some good springs and a custom cam to make more power.there are newer and better cam lobes then the gm design.

SweetS10V8

iTrader: (4)

I milled my L92s .030 and had very limited PTV. 223 cam had .045". Had to run a 219 cam to clear .070" I&E.

litle88

iTrader: (20)

LPE milled my Ls3 heads to 65cc for 11.8 of compression for my 247/259 .624 on both sides on a 113Lsa

But yea the ASA sounds nasty!

lt1773

iTrader: (1)

226/238 with milled heads without any issue

deuce4935

iTrader: (2)

For the price, I' would even go with the GM Showroom Stock cam pt#88958606, @.050 239*int/251*exh, 0.570" lift int and exh on a 106. This cam with milled L92 heads and a carb will be a beast.

SweetS10V8

iTrader: (4)

how much did they mill? Milling from 74cc to 65cc is a LONG way. Do you have pistons with reliefs?

180ls1

iTrader: (4)

you will want better valvesprings. Ls6 valvesprings barley work for the ls6 cam and there have been quite a few of those that break on a stock ls6 engine. Not to mention the ls6 valves are hollow stem and smaller making them a lot lighter then the l92 ones.

litle88

iTrader: (20)

Yes Sir, I have -2cc valve reliefs.

bfurches

iTrader: (12)

Guys, thanks for all the responses...

Just to clarify, I am referring to the use of the said cam in a L92 engine (not a 6.0L or any other variant with l92 heads, but an actual, off the assemble line L92 6.2L)

With that being said... the cam that deuce4935 recommended sounds VERY interesting. "GM Showroom Stock cam pt#88958606, @.050 239*int/251*exh, 0.570" lift int and exh on a 106"

I know I am getting into an area that may be hard to answer without measuring actual PTV clearance... BUT ...lets say I decided to mill my heads just .020 and run a standard thickness head gasket...Could I get away with running this cam? It seems to have a really tight LSA, but I agree with deuce4935 ...that on a carb motor, this should be a pretty aggressive combo!

Any input? Sorry for the novice question as far as clearances lol. I very well may just need to measure to figure it out, but just trying to get a ball-park of where I stand.

Thanks again for all the responses!

deuce4935

iTrader: (2)

Here are 2 more GMPP cams that look very promising.
Stage 2:

Advertised Duration (I/E) 290/305
Duration @ 0.050 227/239
LSA 108
Lift (w/1.7) 0.551/0.551
Lift (w/1.8) 0.583/0.583

LS7 engine-dyno with the "Stage 2" cam results show;
554hp at 6200rpm – plus 35hp over the stock LS7 cam
508ft-lbs @ 4800rpm – over 440ft-lbs of torque from 3200 to 6500rpm’s
$374.99

Stage 3:

Advertised Duration (I/E) 294/335
Durartion @ 0.050’ 233/276
LSA 107
Lift (w/1.7) 0.595/0.595
Lift (w/1.8) 0.630/0.630

LS7 engine-dyno results with "Stage 3" cam show;
600hp @ 6800rpm
526ft-lbs @ 4900rpm – over 450ft-lbs from 3200 to 6800rpm’s
$374.99
Almost forgot the pt numbers,Stage 2 Cam part #88958722, Stage 3 Cam part #88958723.

bfurches

iTrader: (12)

deuce4935 ...those also look appealing for a carb engine. I believe the stage 2 may fit, but I think I would have some PTV clearance issues with the stage 3...

Stage 2 seems like it would be a good fit. Appears to be a little more aggressive then the ASA but not by a lot, which is exactly what im looking for. That may be the cam I try and run with. Does anyone know what the rough operating rang of this cam would be, or have a dyno chart?