lt4 hot cam

[98vortec]

i got 98 vortec 350 im going to swap to lt4 hot cam im wanting to know whats a good head upgrade?

 

[c1500deathtrap]

Just run the vortecs.

 

[ccreddell]

Yeah, Vortecs work real well. Run these springs and you should be good to go.

https://www.alexsparts.com/valve-spring-kit-sb-chevy-vortec-hi-perf-hyd-roller/

 

[slowburb]

The vortec heads match very well with that cam. If you want though, you could look at the afr 190s.

 

[RedLeader289]

That cam also works well with fastburn aluminum heads (which are vortec as well).

 

[moremudd]

I want to change to the lt4 cam as well but how the hell does a person program the black box to cooperate . It looks like the 0411 swap is dead with out lextech's assistance . I have had no luck getting information on the swap that looks reliable , I'm about ready to sell the truck just so I can have some tuning flexibility in a newer truck .

 

[RedLeader289]

I want to change to the lt4 cam as well but how the hell does a person program the black box to cooperate . It looks like the 0411 swap is dead with out lextech's assistance . I have had no luck getting information on the swap that looks reliable , I'm about ready to sell the truck just so I can have some tuning flexibility in a newer truck .

heh. . .my gut answer is swap to a carb, then you can tune all you want and with the right set up get comparable gas mileage.

 

[slowburb]

The black box can be tuned, just not by most of the guys who can tune 0411/late model computers. A carb would work more easily with a stick shift truck (notice I didn't say "standard" ) than an automatic because a 4L60E requires computer control, so a carb swap requires a standalone transmission controller.

 

[moremudd]

I completely agree , a carb would solve so many problems with this particular truck/pcm combo , I have even considered stepping back to a 1992 so I could do a stand alone pcm swap , but at the moment Texas has us by the balls with the visual inspection plus a obd-2 scan , I'm really hoping to hear from lextech , I would love to switch out the pcm and just make it run right with a tune . My truck is a 1998 K-1500 , 5.7 with the NV-3500 , all stock other than rebuilding the worn out front end , crate engine and lowering it 4 inches so my broke ass back can get in and out of it easier . I only use 4 wheel drive for the bad weather and slick boat ramps anymore .

 

[98vortec]

can someone post link to the fastburn heads or the afr heads please