... your pcm by disconnecting the battery? I have never done it buy I'm sure a search will reveal the process. Are the plugs gapped correctly?
Alot of it has to do with tuning. My 05 L33 5.3 so called H.O. will not burn them from a stop. I'm sure If I ever get my TM removed it will live up to it.
Torque managment is a great thing for the auto makers reliability reputations. They make it difficult for us to abuse them. Enter the tuners, thus leaving it up to us to use the proper TLC. Heh!
Not all are the same. A friend of mine has an 05 RCSB 2WD that runs like a mad dog. It will smoke em and chirp 2nd. My 92 ECSB 3WD with a 185 or 200hp 5.7 would sizzle the tires as for long as I wanted them to with a limited slip rearend.


Uh? By the way?
Did you change your oil after the sea foam?

 

My 92 ECSB 3WD with a 185 or 200hp 5.7 would sizzle the tires as for long as I wanted them to with a limited slip rearend.


I agree. I've had a 300hp 350 in 68 Camaro that would melt the tires and peg the speedo.

These 4.8 and 5.3 engines just don't have any low end power but have it up top. We have a 2500 rclb 6.0 at work and it will spin the tires easy if you aren't careful. Also the old 350's pulled trailers better. I just want more low end with out having to lose my driveability and towing.


Sorry for the rant!!!

Now back to our original topic!

 

I just want more low end with out having to lose my driveability and towing.

= Radix

 

a tune would help alot and if your gutting the cats just have the exhaust shop fabricate up another y pipe or use u bends and an aftermarket y pipe. Then cat back, I would expect at least a 40 rwp gain just from those 3 things. A stall will let you burn the tires down but thats at the expense of low rpms. gears would help alot down low, old man cam etc..

 

Yes a Radix will do the job but I also have been reading alot of post here lately about blown trannys and G80's. I'd like to go FI but I'd just blow up something. I think I'm having G80 problems already.

 

All ready have the drop.....bought it during the winter for dirt cheap! but have always been interested in changing the torque converter, can u suggest one? Thanks

 

Yeah...It seems like i have lost power! the day i purchased it, it spun the tires no problem, no its just gutless?? hope my cats are the problem!

 

Yeah i have disconnected the battery....I have gapped my plugs (NGK) to the specs in my manual....and yes i changed the oil after the SEAFOAM...

 

5.3 engines go a very long way when dealing with milking power out of them...either low-end or high-end... A friend of mine ran 11.67 on his '03 silvy with 150-shot of nitrous (TNT), a big *** cam, 3400 stall (vigilante)...amongst other mods

 

Yes by doing that to any motor you will run faster but I was talking about stock motors. I've had stock 350's with LOTS more low end power than this 5.3 has. Maybe I have the odd motor and I know I have a lead sled but just normal driving from a stop light I get pulled by old ladies in 4 door Saturns. It will barely spin the tires. If I drive around in 3rd instead of drive it runs better and above 3000 it runs good. I don't like the drive by wire throttle either. At highway speeds it is slow to respond to pedal inputs.

I'm not really looking for low et's just good street power and power for towing my toyhauler.