Cam on stock 85 C4?
Thread Starter
Intermediate
Joined: Feb 2023
Posts: 37
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From: Tennessee
Cam on stock 85 C4?
I would love to add a cam to my engine without having to tear everything apart I’m looking for a slight difference in torque but mostly the sound of a cam I’m new to a lot of this and would love some friendly pointers. If I could avoid replacing the rollers/lifter and springs that’s cool if not I could see abt trying to. Anything helps appreciate it!
Burning Brakes
Joined: Sep 2017
Posts: 941
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I would love to add a cam to my engine without having to tear everything apart I’m looking for a slight difference in torque but mostly the sound of a cam I’m new to a lot of this and would love some friendly pointers. If I could avoid replacing the rollers/lifter and springs that’s cool if not I could see abt trying to. Anything helps appreciate it!
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Burning Brakes
Joined: Aug 2006
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From: Seattle WA
Nope, stock flat tappet cam. Flat tappet cams come as a kit with the lifters as lifters need to wear into their cam (can't be reused on a different cam once run). You would need to pull the intake and everything off the front and in front of the motor as well as drop the oil pan a little. Not too difficult, but pretty involved. A nice upgrade for an '85 with stock TPI would be something like the lingenfelter 211 cam. Just select a flat tappet cam with one close to those specs, and you'll get what you're looking for (bit more power and a little more sound).
Team Owner
Joined: Sep 2001
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From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
I would love to add a cam to my engine without having to tear everything apart I’m looking for a slight difference in torque but mostly the sound of a cam I’m new to a lot of this and would love some friendly pointers. If I could avoid replacing the rollers/lifter and springs that’s cool if not I could see abt trying to. Anything helps appreciate it!
After you change the cam, you have to have the ECM chip redone, and 85 is the unique one.
You need to come up with a complete plan and plan for an entirely new top end, exhaust, and chip tune.
Thread Starter
Intermediate
Joined: Feb 2023
Posts: 37
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From: Tennessee
You can't get the cam out without taking the whole top end off the engine. And if you went with anything other than stock, you'll regret not changing the springs.
After you change the cam, you have to have the ECM chip redone, and 85 is the unique one.
You need to come up with a complete plan and plan for an entirely new top end, exhaust, and chip tune.
After you change the cam, you have to have the ECM chip redone, and 85 is the unique one.
You need to come up with a complete plan and plan for an entirely new top end, exhaust, and chip tune.
Team Owner
Joined: Sep 2001
Posts: 62,164
Likes: 1,734
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
But the heads themselves on an 85 are terrible, and putting in a different cam wouldn't really give you anything, it'll still be choked down by the heads and exhaust manifolds.
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