To toss in a converter or not....

[chicagotransam]

Just picked up my cam. Specs are:

Intake Duration: 214 Degrees at .050" Tappet Lift.
Intake Lift: .600" with 1.7 rockers.
Exhaust Duration 220 Degrees at .050" Tappet Lift
Exhaust Lift .564" with 1.7 rockers.
115 Degree LSA

(This is the Truck Torque 1 from EPS)



Also picked up a new timing chain, pushrods, double springs etc.... just wondering if you all would suggest adding a converter to the mix. This is a DAILY DRIVER, so don't want to get crazy. I have the luxury of living within 20 minutes of a custom converter place.

 

[Playsinsnow]

What's the ultimate goal? You have a cam in a DD so not sure which direction you want to go... but I say keep it unless you're racing

 

[chicagotransam]

What's the ultimate goal? You have a cam in a DD so not sure which direction you want to go... but I say keep it unless you're racing

Ultimate goal... A DD that won't get smoked by a Kia? LOL


Down the road, I might plumb up a turbo (buddy has one in his Silverado and the 5.3 seems to love it). That won't be until spring at least...

For now, just looking on opinions with this cam. The 5.3 is already pretty weak on the bottom end and wondering if the top end will make up for it sufficiently

 

[jimmyjam]

converter, yes. question is how high of a stall. depends on the torquiness of that cam.

my cam is 231/239 .617/.624 114LSA, I swapped out my 3200 stall with a 3000 because I'm making plenty-o-torque down low

 

[chicagotransam]

Got a tune scheduled for the 8th... so going to drop the cam in the day before. It looks like a lot of the loss in low-end is due to torque management, namely line B2804 (throttle open-rate limits) in the ECM. I'm going to try without doing it and see how it turns out with just removing all rate limits

 

[chicagotransam]

[video=youtube;VLsY7dYjenY]https://www.youtube.com/watch?v=VLsY7dYjenY[/video]

This is on a 4.2, but is included in the 5.3L's engine management

 

[C-ya]

I'd like to get rid of that slow rate opening myself. Not sure I want to pay for a tune bad enough to do it yet, tho.

 

[chicagotransam]

I'd like to get rid of that slow rate opening myself. Not sure I want to pay for a tune bad enough to do it yet, tho.

It's cheaper than converting to cable... Since I need the tune anyway, might as well have him punch in a few extra numbers