LS1TECH - Camaro and Firebird Forum Discussion

LS1TECH - Camaro and Firebird Forum Discussion (https://ls1tech.com/forums/)

- LT1-LT4 Modifications (https://ls1tech.com/forums/lt1-lt4-modifications-31/)

- - Gm 847 cam (https://ls1tech.com/forums/lt1-lt4-modifications/1893744-gm-847-cam.html)

cam2z

03-11-2018 08:11 PM

Gm 847 cam

I have been looking around and can’t find any for sale new. Have they been discontinued? If any knows where I can get one or has one for sale please let me know. Thank you

KW Baraka

03-12-2018 12:22 AM

Have you checked to see if they're still listed in the GMPP catalog?

If they're not listed, then the likelihood of finding one is remote.

KW

stevo9389

03-12-2018 05:35 AM

They still sell what looks like a gen1 version of the GM847 under part number 19244485

cam2z

03-12-2018 11:55 PM

So what is the difference between the regular sbc cam and a lt1? Is it just the length of the pin?

transbird95

03-13-2018 03:11 AM

Quote:

Originally Posted by cam2z (Post 19852678)

So what is the difference between the regular sbc cam and a lt1? Is it just the length of the pin?

The opti spark shaft slides in the front of the cam also.

SS RRR

03-13-2018 11:11 AM

Quote:

Originally Posted by cam2z (Post 19852678)

So what is the difference between the regular sbc cam and a lt1? Is it just the length of the pin?

You will have to get one that is for a roller engine (roller lifters). The cam snout is machined with a step for a cam plate to keep it from walking. If you have a vented opti then you will have to get the center hole in the cam snout drilled out to accept the opti.

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