Which Camshaft do you guys think?

[sled_dog]

Comp 4x4 Xtreme-
206/210 duration @ .050
.458"/.458" gross valve lift
111* lobe seperation angle

Comp Computer Controlled-
206/210 duration at .050
.450"/.480 gross valve lift
112* lobe seperation angle

Comp 4x4 Xtreme next level-
210/214 duration @ .050
.474"/.474" gross valve lift
111* lobe seperation angle

Comp Computer Controlled next level-
210/220 duration @ .050
.480"/.480" gross valve lift
112* lobe seperation angle

This is a 383 with 10:1 compression running on TBI. Better than standard TBI heads, little port work, and the main job of the rig will be crawling and trail riding. I've been leaning towards the "next level" 4x4 camshaft. I will need a custom chip anyway. However when I get in the mud and hillclimbs, some RPM power would be nice. I know TBI isn't going to support 6500 RPM runs. What do you guys think?

 

[Ryan B.]

I get some more info from knowledgable people but i'd probably go with the last one.
Comp Computer Controlled next level-
210/220 duration @ .050
.480"/.480" gross valve lift
112* lobe seperation angle


My 350 has a 212/222 duration @ .050
.435/.460 lift. 112 LSA.
and im sure it wants more cam.

 

[sled_dog]

I'm gonna call Comp and see what they say. I found 2 other camshafts that I like the looks of.

one is
206/212 duration @ .050
.480/.488" gross valve lift
112* LSA
That one says its for stock 305s and 350s with TBI

this one
212/218 duration @ .050
.488/.503 gross valve lift
112* LSA
That one says its for stock TPI motors. Thinking that second one sounds decent. But I don't have a stock anything.

 

[southernspeed]

That sounds like a ECM nightmare! Are you burning your own chip? Wanna burn me one!!(to my spec!)

 

[sled_dog]

gonna have to be a custom chip

 

[Z3PR]

In all honesty, I'd call Comp Cams and see what they recomend.

 

[bushmaster]

try this experiment call comp cams and go thru the process next night do it again ill bet each time u call u will get a diffrent recommendation. some salesman is just picking a cam that falls roughly in your catagory. i went thru this thats how i know try calling iskendarien isky cams they seem very knowledge able they ground a custom cam for me

 

[Ryan B.]

isky and crower are both good companies. Haven't heard as good of a reputation about comp cams especially about solid rollers.

 

[smalltruckbigcid]

Do you have emissions to pass? If you do get the most LSA possible...114 degrees or more because the ecm will have an easier time with the duration. When you increase cubic inches it tend to tame wilder cams down some. Otherwise I would pick the extreme 4x4 cam.
George

 

[sled_dog]

Just ordered my camshaft. Went with this LT4 Camshaft. Scoggin Dickey has it listed as a great upgrade for TBI trucks. Derf00 PMed me and said they run an LT1 camshaft in the 383 Edelbrock MPFI(future upgrade for me) motor they have. THe LT4 cam has just a little more duration and is meant to run a little more lift(1.6 ratio rockers), so I went with that. Not to mention it was $30 cheaper than the LT1 camshaft. Cost me $270 shipped with new pushrods and distributor gear.