Last night I decided to play with my PPIII programming a little more. I decided to raise the rev limiter up to 6100 and bump the shift points in all gears up 5 mph (via PPIII). The truck came alive! I had always had a problem where it would shift into 2nd and I could not shift down after about 20 mph and the same thing with 4th to third after 65 mph. All gone and is there ever kick!

The only thing I am concerned about is whether I might get float, especially in 1st as I hit into the 6100 rpm range. I am also working on the purchase of a 2003 ZO6 12565308 cam. I will use the new springs but will this add to the problem or should the new ZO6 springs handle it fine? The specs are:

.550" intake, exhaust lift 218 degrees, exhaust duration 204, intake duration at .050, 117.5 degree lobe centers.

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'00 RC SportSide 5.3, FIPK, MAS, 80mm TB, PPIII, Gibson Supertruck catback, Taylor wires coming JBA shorties, ZO6 cam

 

I hear that's borderline for stock pushrods... I'm not sure about float with those springs/specs though.

 

I am hitting the rev limiter in 1st. I corrected the above. The limiter was set at 6100 rpm. I just moved it to 6200. I will have to see if I still hit it. In my setup (PPIII) each mph in 1st-2nd shift is worth 117 rpm, 2nd-3rd is 62 rpm and 3rd-4th is 38 rpm. I raised each a full 5 mph. Guess I will jave to hit the track this spring to see if it has really helped.

Info from anyone that has used their PPIII for these changes would be helpful.

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'00 RC SportSide 5.3, 3.42, FIPK, MAS, 80mm TB, PPIII, Gibson Supertruck catback, Taylor wires coming JBA shorties, ZO6 cam

 

my HPP3 wouldn't only let me go to 6200....the LS6 cam will run better the higher you spin it....it's a definate top end cam. get a set of 7.4" hardened pushrods and you're good to go.

 

Thanks for the advice. Any advice on who's rods to get and the place with the best $?

 

Go with Comp Cam rods and you can get them from quite a few of the sponsors over on the right ----->>

 

I was shifting at 6200 rpms for most of the time I ran my ls6 cam. Actually, 6200 was about right, because power started falling off hard that. I do think my LS6 springs started getting weak after a couple of years. Power in the upper rpms wasn't quite as good at the end as it was when I first installed it.

 

Richard, did you have 01 LS6 springs, or 02-03 LS6 springs?