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-   -   GM 847 cam? (https://www.camaroz28.com/forums/lt1-based-engine-tech-9/gm-847-cam-459666/)

hozb817 Jul 6, 2006 03:20 PM

GM 847 cam?
 
ANY INPUTS ON THIS CAM GM PART # 12370847
LOOKS GOOD TO ME ESPECIALLY FOR TOP END POWER

http://www.gmpartsdirect.com/results.cfm

jsetzer Jul 6, 2006 04:00 PM

Re: GM 847 cam?
 
I like it.

There is plenty of drama to be found here as far as a cam being too big/small, so I won't get into that.

My biggest word of advice though would be about your bottom end. This is not a freakishly huge cam, but none the less you need to be prepared to spin it to 6500+. Which basically means if you are on a stock high mile bottom end you need a miracle.

It feels a little sluggish below 3k. But my tq curve on the dyno was flat pretty much all the way across. 4-5 it pulls pretty good. 5k+ it screams, so to really enjoy it you have to spin it.

People have made 360 cam only with the cam though.

Is this a track car or DD? A cam this big needs a decent amount of gear, and with a 3 speed I wouldn't want to drive it on the highway with 3.73s or 4.10s.

hozb817 Jul 7, 2006 07:34 AM

Re: GM 847 cam?
 
The car is mainly track driven, with weeked trips but not far distances, I have a 3000 Stall hopefully that might help with the sluggish below 3K, the car has 56K miles on it and has been running pretty strong, untill recently, I have timing issues, but the cam specs look promising and with a full head port job and LT4 port matched intake manifold I am sure to get great gains!

jsetzer Jul 7, 2006 08:05 AM

Re: GM 847 cam?
 
Go for it. Of the several I have tried, it is my favorite off the shelf cam.

When I say sluggish, it is still more power than stock, just you feel a harder pull up top than down low. Which is kinda obvious anyways with a larger cam.

Sweetred95ta Jul 7, 2006 08:09 AM

Re: GM 847 cam?
 
Do a search and you will find anything and everything you want to know about this cam.

hozb817 Jul 7, 2006 08:29 AM

Re: GM 847 cam?
 

Originally Posted by jsetzer
Go for it. Of the several I have tried, it is my favorite off the shelf cam.

When I say sluggish, it is still more power than stock, just you feel a harder pull up top than down low. Which is kinda obvious anyways with a larger cam.

Well that is exactly what I am looking for, same low end power, greater top end power, my low end is awesome cutting 1.6 60's isnt too bad on stock suspension, so its looks like a good pick, thanx for the info!

AlwaysCode390 Sep 17, 2006 11:44 AM

Re: GM 847 cam?
 
Did you end up getting the cam? ---


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