Fst_Byrd

iTrader: (5)

Hey everybody! I'm posting a question for my buddies build. He's swapping a 2006 5.3L into his 1964 C10 stepside. He's getting a mailorder tune from Frost but were curious what is the largest cam size limit on getting a mail order tune?
He has sent Frost a few emails about this but has not gotten any responses. So maybe Frost will chime in here

He's looking into the LS9 cam ( 211/230 .560/.560 122.5LSA)

Is this cam too large to do JUST a mail order tune on?

Thanks in advance

Russ K

iTrader: (1)

Need a lot more info. Manual or auto? What torque convertor? Rear axle ratio? Headers (long tube or shorty)?

That LS9 cam is not a good choice for a 5.3 NA motor. As the intake valve opens too late @-17* BTC and closes too late @48* ABC. Plus with -19.5 overlap @.050 it will idle as smooth as stock, but will make less than stock power overall. Probably make a bit more top end if you have LT headers.

Russ Kemp

Fst_Byrd

iTrader: (5)

Its an auto 4l60E, will have a stall converter matched to whatever cam is chosen, 4.11 rears and shorty headers, true dual exhaust.


Well my main question I'm looking for is how big of a cam is safe to run on a mail order tune. Not saying its for sure going to be the ls9 cam just looking into that one.
Car craft article does show that bottom end would be sacrificed but for some pretty nice gains up top which is fine. Its a light *** pickup truck so the loss in torque might help with traction. A stall would help get it out of the hole then the cam could kick in.


page 2 of article http://www.carcraft.com/techarticles...mparisons.html

Russ K

iTrader: (1)

Well, the LS9 lost power over the LM7 cam until 5500. Another bad magazine test, as the stock LM7 cam is done before 5500.

Is the 5.3 a L33 vin B (H.O.) or the LM7 vin T? The L33 has 9.9 CR vs 9.5 for the LM7. I would go with a 224/228 110 LSA+4/.580/.580.

Russ Kemp

Fst_Byrd

iTrader: (5)

Its an L33. Well only reason for looking into the ls9 is because it can be bought new for $90. Just looking for cheap extra power right now. Will be swapping to better cam down the road, if this cam doesn't work, just gonna run it stock until he can get the funds around.


So does anyone know the limit on cam size for a Frost mail order tune?!?

Fst_Byrd

iTrader: (5)

Steve Frost, do you have any input??

Russ K

iTrader: (1)

Also the LS9 doesn't have a reluctor for the cam sensor. So you will need a 2005 LS2 timing cover, cam sprocket & sensor & a longer cam sensor harness.

Russ Kemp

redtan

iTrader: (5)

That cam is small enough that a good online tuner should be able to just toss some random numbers to the tune and be fine.

PREDATOR-Z

Frost can tune to run but not optimize it and warrant all the efforts. A mixed dyno/street tune will make the $$ spent and efforts worthwhile.
Frost is good at what he does but no one can get the tune 100% on a mail order. I do not know if he tunes live if so take it to him.

pdsq98gt

I agree with Russ. Don't put the ls9 cam into an NA 5.3. Not worth it. I think the ls6 cam is more suited for a 5.3. The ls9 cammed 5.3 I tuned felt weaker down low (where 95% of driving is done) and barely stronger up top.

COSPEED2

iTrader: (7)

We offer remote tuning services that will optimize that or any cam the best.
Being able to get live data from your car and possibly change it to your wants/needs at the time is pretty invaluable.

I would go with something else than an LS9 cam though. Most people do them because they are dirt cheap. Just like they used to do the LS6 cams. There is quite a bit more out there and even custom cams like we like to promote that will gain you better all around performance and still drive like that cam would.

Torque in the trucks is where it is at really, and you wont find as much of it with any stock LS cam as you will with many of the new lobes from any of the big cam companies. The fun factor is in the TQ. The rest is details.