REALLY Silly stock cam question...
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Well, we're going through a TBI motor, and I remember reading a good upgrade for them was running an LT1 cam. Problem is, it doesn't have roller lifters. It has all the holes and what not FOR it, but just a normal hydraulic lifters.
So the question is: Do you have to run roller lifters on an LT1 cam?![The Jester](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_jest.gif)
Yes, I really asked it :\
Otherwise, does anyone know the cam specs for like a 96 Vortec 5.7? I found an LT1 cam for $20, and we can get a Vortec short block with a spun bearing for $50. If the Vortec is a bit better cam, or whatever, then we can just stick with it. Otherwise, we'll use all the roller lifter stuff from it, on the TBI motor.
Thanks
So the question is: Do you have to run roller lifters on an LT1 cam?
![The Jester](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_jest.gif)
Yes, I really asked it :\
Otherwise, does anyone know the cam specs for like a 96 Vortec 5.7? I found an LT1 cam for $20, and we can get a Vortec short block with a spun bearing for $50. If the Vortec is a bit better cam, or whatever, then we can just stick with it. Otherwise, we'll use all the roller lifter stuff from it, on the TBI motor.
Thanks
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No, our only(smart) option is to use the roller setup from the Vortec motor. The TBI block is setup for roller, it just isn't a roller cam motor. I even said all that in my first post ![Tongue](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_tongue.gif)
And yes, we could buy the expensive link-bar retro fit rollers, but since $50 < $350, I think it's clear what we'll be doing![Winky](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_wink.gif)
At any rate, thanks for confirming what I figured.
![Tongue](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_tongue.gif)
And yes, we could buy the expensive link-bar retro fit rollers, but since $50 < $350, I think it's clear what we'll be doing
![Winky](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_wink.gif)
At any rate, thanks for confirming what I figured.
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Right, this I know. We just don't have an LT1 to get it from. The guy I found with the cam upgraded his. While it is only the B-Body cam, it's still a nice upgrade (aside from being roller) from the TBI cam.
B-Body specs are
Valve Lift (Intake):.418"
Valve Lift (Exhaust):.430"
Duration at .050" Lobe Lift (Intake):191 Deg
Duration at .050" Lobe Lift (Exhaust):196 Deg
LSA: 111
TBI Cam spec is
Valve Lift (Intake):.390"
Valve Lift (Exhaust):.410"
Duration at .050" Lobe Lift (Intake):194 Deg
Duration at .050" Lobe Lift (Exhaust):203 Deg
LSA (Intake):108 Deg
LSA (Exhaust):116 Deg
I do admit, the duration is a bit less, but I think it'll still be a fun motor. It's going in an 86 2wd S-10 Blazer
B-Body specs are
Valve Lift (Intake):.418"
Valve Lift (Exhaust):.430"
Duration at .050" Lobe Lift (Intake):191 Deg
Duration at .050" Lobe Lift (Exhaust):196 Deg
LSA: 111
TBI Cam spec is
Valve Lift (Intake):.390"
Valve Lift (Exhaust):.410"
Duration at .050" Lobe Lift (Intake):194 Deg
Duration at .050" Lobe Lift (Exhaust):203 Deg
LSA (Intake):108 Deg
LSA (Exhaust):116 Deg
I do admit, the duration is a bit less, but I think it'll still be a fun motor. It's going in an 86 2wd S-10 Blazer
![Tongue](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_tongue.gif)
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At any rate, yes, the F/Y-Body LT1 cams are bigger. Between .447-.451 intake and like .450-.460 exhaust. I could get the specs, but I'm not at home and don't have my bookmarks.
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if you do a cam swap make it worth while, lt1 stock... waste of time/ money imo. i have stock lt1 parts i'm dying to get rid of for almost nothing let me know if you do want them. good luck
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Thanks though.