Unknown Camshaft
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Joined: Jan 2018
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Unknown Camshaft
Hey ladies and gents,
I am currently in the process of putting a Big block Chevy in my 92 Camaro and I got a good deal on the motor. It cam out of a pickup truck with some things done to it but for the most part unknown. It has springs and roller rockers and a cam. While looking over the motor I pulled the rear cam plug to get a number off the camshaft and after searching all over the internet I cannot find who makes this cam or any info on it. If anyone knows anything about it that would be great. It’s a mark IV 454. Attached are pictures of the markings on it.
[img]webkit-fake-url://611efb62-e249-4a59-9ba2-85e68a917c7b/imagejpeg[/img]
[img]webkit-fake-url://e2d152bb-fbcf-4e06-8cf3-2dcf2470d31f/imagejpeg[/img]
I am currently in the process of putting a Big block Chevy in my 92 Camaro and I got a good deal on the motor. It cam out of a pickup truck with some things done to it but for the most part unknown. It has springs and roller rockers and a cam. While looking over the motor I pulled the rear cam plug to get a number off the camshaft and after searching all over the internet I cannot find who makes this cam or any info on it. If anyone knows anything about it that would be great. It’s a mark IV 454. Attached are pictures of the markings on it.
[img]webkit-fake-url://611efb62-e249-4a59-9ba2-85e68a917c7b/imagejpeg[/img]
[img]webkit-fake-url://e2d152bb-fbcf-4e06-8cf3-2dcf2470d31f/imagejpeg[/img]
Joined: Feb 2017
Posts: 4,174
Likes: 569
From: Meriden, CT 06451
Car: 84 TA orig. 305 LG4 "H" E4ME
Engine: 334 SBC - stroked 305 M4ME Q-Jet
Transmission: upgraded 700R4 3200 stall
Axle/Gears: 10bolt 4.10 Posi w Lakewood TA Bars
Re: Unknown Camshaft
Camshaft Type Lobe # 5646
Rated Duration 275
Duration in Degrees @ .050 248 @ .200 145
Lobe Lift .266
Tappet Lift @ TDC 106° .106 110° .093
Theoretical Valve Lift @ "0" Lash Rocker Arm Ratio Ratio 1.5 .399 1.6 .426 1.7 .452
http://www.compcams.com/Technical/Ca...obeCatalog.pdf
See page 40.
Rated Duration 275
Duration in Degrees @ .050 248 @ .200 145
Lobe Lift .266
Tappet Lift @ TDC 106° .106 110° .093
Theoretical Valve Lift @ "0" Lash Rocker Arm Ratio Ratio 1.5 .399 1.6 .426 1.7 .452
http://www.compcams.com/Technical/Ca...obeCatalog.pdf
See page 40.
Joined: Feb 2017
Posts: 4,174
Likes: 569
From: Meriden, CT 06451
Car: 84 TA orig. 305 LG4 "H" E4ME
Engine: 334 SBC - stroked 305 M4ME Q-Jet
Transmission: upgraded 700R4 3200 stall
Axle/Gears: 10bolt 4.10 Posi w Lakewood TA Bars
Re: Unknown Camshaft
Or is that number 3848 ?
Pull up that pdf, go to the top of the page, click EDIT, then FIND, type in the correct number and see what you get.
Pull up that pdf, go to the top of the page, click EDIT, then FIND, type in the correct number and see what you get.
Thread Starter
Junior Member
Joined: Jan 2018
Posts: 3
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Re: Unknown Camshaft
Thanks for your help! that's exactly what I was thinking that it was 3848. I couldn't find anything under comp cams with it and the others from comp I have seen have different markings on the back. I'm not sure if anyone has seen one like this or know what brand it is. it looks like it also has 13-45-02 and a sideways M on it.
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green_is
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Jun 13, 2001 02:52 PM