Best cam for a 5,7 Vortec rebuild.

[JonB]

Have 96 K1500 with a 5,7 Vortec. Live Sweden so I have to keep the cats and no headers. What is the best cam for more torque an a little more HP. Have a Summit racing cat back ex system. Don't whant to do change anything with the stock engine managment.

 

[df2x4]

If you don't want to alter the tune in the PCM at all, don't bother with a cam upgrade IMO. If you change cams and don't change the tune accordingly, you're going to be leaving most of your gains on the table.

 

[BowtieBrody]

If you want a cam that will work with the stock tune, the 395 Cam is your best bang for the buck. It would yield MUCH better power results with some tuning;, hell, tuning in general will wake your truck up, but this cam will run with the stock ECM.
It's the same camshaft used in the Ramjet/HT383E crate engines, and can be bought from Summit or Karl Performance for anywhere from $170-$200.

 

[1BigCarrot]

https://www.summitracing.com/parts/nal-14097395

Like Df2 said, either tune your ecm for the upgrade or don't waste your time/money on the cam. There are alot of other things you should do when opening the motor up that far as well, so it's not really just throw a cam in and go.

 

[Steve A]

I've been thinking about the same thing and pretty much along the same line as Brody.

 

[redfishsc]

I've often wanted to do this as well, but everytime I think of putting a cam in it, even when it would be a convenient time to do it because of doing head gaskets or whatever, I remember there's a 4L60E bolted behind it, and I'd rather not have to replace that too early

 

[BowtieBrody]

I've often wanted to do this as well, but everytime I think of putting a cam in it, even when it would be a convenient time to do it because of doing head gaskets or whatever, I remember there's a 4L60E bolted behind it, and I'd rather not have to replace that too early

Stab a B&M or Transgo shift kit, and maybe a Corvette servo and lay your fears to a mild rest, you could also upgrade your 4L60E to 4L65E standards; which I think is just an upgraded sunshell and a deeper trans pan, maybe one or two other differences; I could be incorrect though, it's been a while since I've researched any 350/4L60E stuff.

 

[df2x4]

Stab a B&M or Transgo shift kit, and maybe a Corvette servo and lay your fears to a mild rest, you could also upgrade your 4L60E to 4L65E standards; which I think is just an upgraded sunshell and a deeper trans pan, maybe one or two other differences; I could be incorrect though, it's been a while since I've researched any 350/4L60E stuff.

Or you could do all that and then some, and then still have your stock V6 blow it up regardless.

 

[BowtieBrody]

Or you could do all that and then some, and then still have your stock V6 blow it up regardless.

Or just swap to an 80E right out of the gates?

 

[df2x4]

Or just swap to an 80E right out of the gates?

This would absolutely be my recommendation! I'll never put any money into a 4L60E/700R4 platform ever again.

I mean if it's not broken don't fix it, but if it does break, don't replace it with something that's going to break again.