highgmc

can you use the diablo to tune a cam?
I am getting:

Thunder Racing Custom Camshaft - 220/220 .553/.553 114 LSA 1500-6500 RPM Power Band. ***Computer Tuning Required with automatic transmission cars.*** Can I get away with stock tuning? A very well balanced camshaft that makes excellent power across the entire RPM range. Due to the fast ramp rate of this camshaft, the use of 1.8 rockers is not recommended.

ChevyTrukRacer99

iTrader: (2)

I would like to know also cause I am installing a very similar cam. I have heard that the TQ converter will lock and unlock while cruising on the highway.

BigTex

iTrader: (16)

You'll need some kind of tune. My cam required a higher idle and a little tweeking to make it run good. It will lope on a 5.3 and might make driving an auto a little stressful.

ChevyTrukRacer99

iTrader: (2)

How about if I do some tuning, will it run ok? I am not sure if i want to install it if I am going to have all kind of tuning issues. What do you mean that driving could be stressful?

BigTex

iTrader: (16)

Stressful= no tuning = lope, stalling, poor off idle throttle, dies when you have to brake hard, dies when you put it in gear or change A/C system on / off, etc... I don't mean that it won't work, it just means that without tuning, you won't like the way it feels. Plus with that cam, you'll probably need to adjust your air / fuel mix a little.

With tuning, I'd bet you can run that cam without most of the above headaches.

MyLS1Hauls

iTrader: (2)

See my post in this forum about that exact cam in a 5.3L. ABSOLUTELY NO TUNING was done to the truck and it has never stalled nor attempted to stall. The truck is an 03 and has ETC, which may make a difference. It does lope pretty hard. I should post up some sound clips. The whole truck shakes side to side at idle when it settles into a "rythm".

1BADHD

I wanna hear.