dmc454

I have a 2002 Chevy 1/2ton 4x4 with a 4.8L & an Auto.Im looking at putting a low mile LQ4 into the truck for more towing power.I have not found a motor yet but Im looking at those places on EBAY that sells low mile takeouts.Im limited on the money and I will do the work myself.I need the 9.0 cmp/ratio for 87 octain and Im going to put a good fresh air intake and a set of full length headers on it(If they have them available).I looking at an aftermarket cam for more torq.The cam is from Vincihighperformance.com the specs are
Dur@ .004" 272/280
Dur@ .050" 210/218
Lift .551/.551
LSA 116

Any input on the combination is welcome.Im located in Mooresville NC if you know any shops that may help with the swap.Thanks for your time.

staringback05

iTrader: (8)

might want to get a little smaller lsa....

hosspowerinc

iTrader: (22)

That would make a good combo IMO. LSA will make it idle a little rough though.

orangeapeel

iTrader: (18)

Nothing wrong with that cam. Nothing. that is a good choice for a street cam. The LSA is fine. It will in turn have less overlap and make it more of a stealth cam. It has +18 degrees so it will be really quiet anyway. Just because the LSA is lower does not necessarily mean its gonna make it choppier. The 116 will make for a nice broad stock-like powerband.

I like your thinking. I would run the cam.

staringback05

iTrader: (8)

for the towing issue i thought he'd want more low end torque....thus my statement of the lower lsa

CaseyEaterMach1

Some one is selling a 6.0 on the boards 800 bucks

6.0 FOR SALE

5_02ls1

iTrader: (20)

in my opinion from the trucks ive driven the 5.3 seems to have alot more zip than the 6 liter.....why not just do the cam and headers on the 4.8.....
my bro in law had a 00 silverado with the 4.8 had towhaul mode in tranny with 3.73 gears....i thought the truck pulled great once you got moving.....and i live in a very mountainous area......

id stay away from ebay engines...its kind of a hit or miss deal....

12secSS

iTrader: (30)

LSA alone does not contribute to low end torque, you need to take into account the CR as well (plus other factors). Since the LQ4 is a 9.5:1, the 116 LSA will boost cylinder pressure in the chambers, which will boost torque. On higher CR engine (like 10.4+) you can get away with a lower LSA.

I totally agree with orangeapeel.

This may have more to do with the 5.3L/4.8L being rutinely mated to a 4L60E with a 3.06 first gear, as opposed to the rutinely mated 4L80E to the 6.0L, which has a 2.48 first gear.

5_02ls1

iTrader: (20)

This may have more to do with the 5.3L/4.8L being rutinely mated to a 4L60E with a 3.06 first gear, as opposed to the rutinely mated 4L80E to the 6.0L, which has a 2.48 first gear.



that makes alot of sense...i didnt know the ratios were differt....learn somthin new every day...lol

staringback05

iTrader: (8)

12sec...i was never a cam guru...BUT someone needs to change a sticky

CaseyEaterMach1

Either way if he is looking for something better at towing I'd go with a 6.0, there is no better way gain low-end power than by increasing displacement. Plus he’ll have more low-end to give up when choosing a cam compared to a 4.8 or 5.3.

troopercar

iTrader: (6)

I have company trucks with all 3 engines. The 6.0 will run slap over the other two. The smaller ones that you think "feel" faster is probably due to lighter trucks/better gears.

ILLINTENT

iTrader: (4)

While your at it, why not slap some stock small chamber heads heads on there to get the comp ratio up a little bit. You would be amazed how a properly cammed and tuned 10:1 compression will run on 87 octane. I've done it tons with no knock retard, and it really helps out with low end torque.

SLO-LSx

iTrader: (4)

And maybe add some stiffer leaf springs. A 3/4 ton will pull much better than a 1/2 ton.

But the 6.0 engine is awesome. We have that in a 1 ton work van, and another with the old 5.7 and that 6.0 rocks.