GM847 camshaft
Thread Starter
Melting Slicks
Joined: Dec 2001
Posts: 2,437
Likes: 1
From: Gainesville Fl
GM847 camshaft
who all is running one of these? i am thinking about getting the dragon camshaft that boulderlt4 has but i had the GM847 cam suggested. i tried looking on a few GMPP sites but couldnt find it. who all is running it with what mods? what kind of power are you putting down?
Race Director
Joined: Sep 2004
Posts: 13,793
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From: St. Peters MO Sometimes you have to prove yourself by doing alot of killing or alot of dying...
I'd like to know this too. I know Jim Mason (GS???) is planning on installing this cam very soon. His insight has got me thinking... but I'm already set up for the hotcam.
Safety Car
Joined: Sep 2000
Posts: 3,524
Likes: 4
From: Hinckley Ohio
Originally Posted by 1996man
i tried looking on a few GMPP sites but couldnt find it.?
Safety Car
Joined: Sep 2000
Posts: 3,524
Likes: 4
From: Hinckley Ohio
Originally Posted by 1996man
i tried looking on a few GMPP sites but couldnt find it.?
Plus I thought it was the 846 cam Jim Mason was going to use?????
Listed right above the 847...
Safety Car
Joined: Dec 2002
Posts: 3,655
Likes: 24
From: Charleston SC
I have never used this guy but have heard great things about his camshaft/head packages and several of the F-body guys are using him. Lloyed will also answer any questions you may have about the 847 with your set up.
Lloyd Elliott
972-617-5671
NightTrain66@msn.com
http://web.camaross.com/forums/showt...+elliott+heads
Lloyd Elliott
972-617-5671
NightTrain66@msn.com
http://web.camaross.com/forums/showt...+elliott+heads
Race Director
Joined: Apr 2000
Posts: 15,344
Likes: 4,009
From: Texas
Originally Posted by LT4BUD
http://www.gmgoodwrench.com/perfpart...on=ep#12370847
Plus I thought it was the 846 cam Jim Mason was going to use?????
Listed right above the 847...
Plus I thought it was the 846 cam Jim Mason was going to use?????
Listed right above the 847...
. As a result, dealing with cam surge while cruising along in 6th gear and 1800rpm for most of that 7 hours wasn't acceptable to me..The 846 has a couple more degrees of duration than the HOT Cam and more lift (.543/.563 vs .525/.525). I have just over 900 miles on the new engine and I'm very pleased with it so far. My part throttle tuning is basically complete. The plan is to hop on the dyno in the March timeframe for WOT tuning. I'm expecting to be around 375rwhp @6500rpm (previous with the HOT Cam was 363 @6400). Gotta get WOT tuning taken care of as I'll be teaching and driving at a PCA driving school in April
Personally, I think the 846 cam is the best kept GM secret ever.
Le Mans Master
Joined: Jul 1999
Posts: 8,683
Likes: 6
From: Phoenix AZ
Originally Posted by 96GS#007
Correct, I'm running the 846 cam. IMO, the 847 is a touch too big for a 350 that sees street duty, especially if you want decent street manners and you don't want to lose low end torque. In my case, I've been known to drive 7+ hours to events . As a result, dealing with cam surge while cruising along in 6th gear and 1800rpm for most of that 7 hours wasn't acceptable to me..
The 846 has a couple more degrees of duration than the HOT Cam and more lift (.543/.563 vs .525/.525). I have just over 900 miles on the new engine and I'm very pleased with it so far. My part throttle tuning is basically complete. The plan is to hop on the dyno in the March timeframe for WOT tuning. I'm expecting to be around 375rwhp @6500rpm (previous with the HOT Cam was 363 @6400). Gotta get WOT tuning taken care of as I'll be teaching and driving at a PCA driving school in April
Personally, I think the 846 cam is the best kept GM secret ever.
. As a result, dealing with cam surge while cruising along in 6th gear and 1800rpm for most of that 7 hours wasn't acceptable to me..The 846 has a couple more degrees of duration than the HOT Cam and more lift (.543/.563 vs .525/.525). I have just over 900 miles on the new engine and I'm very pleased with it so far. My part throttle tuning is basically complete. The plan is to hop on the dyno in the March timeframe for WOT tuning. I'm expecting to be around 375rwhp @6500rpm (previous with the HOT Cam was 363 @6400). Gotta get WOT tuning taken care of as I'll be teaching and driving at a PCA driving school in April
Personally, I think the 846 cam is the best kept GM secret ever.
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Instructor
Joined: Nov 2000
Posts: 197
Likes: 0
From: Hampton VA
I happen to have that cam in my car. I still need a good tune because my tune is for the LT-1 Hot Cam. Car ran a 11.87ET at 117MPH on street tires (Yoko's) but the next run broke the Transmission (ZF). I have not dyno'ed the car, but it's making power. I have a 383CID w/stage 3 AFR ported heads & shory headers & 1.6 RR which creates lift up to .574/.596 & 4:11 rear gear. I drive the car to work sometimes & actually don't have the cam surge most talk about. Planning on moving to long tubes, 3 in exhaust & a good tune. Presently using Borla's.
Le Mans Master
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
Originally Posted by FD2BLK
I have never used this guy but have heard great things about his camshaft/head packages and several of the F-body guys are using him. Lloyed will also answer any questions you may have about the 847 with your set up.
Lloyd Elliott
972-617-5671
NightTrain66@msn.com
http://web.camaross.com/forums/showt...+elliott+heads
Lloyd Elliott
972-617-5671
NightTrain66@msn.com
http://web.camaross.com/forums/showt...+elliott+heads
A friend of mine is running the 847 cam in his 95 Corvette with a 396 stroker from MTI. The cam was suppose to be a MTI custom grind but from all indications we have its a 847 which is ground by Crane for GM and or MTI. My friends car absolutely screams, it was to have made 550hp on their engine dyno, and when I last rode in this car it felt like it as well. The cam did howver exhibit cam surge on the bottom end. It didn't like loaffing around at 1400 to 1800 RPM and cam surge was highly evident during my test drive with the car. It did however scream when he put the pedal to the metal as promised.
Drifting
Joined: Aug 2004
Posts: 1,830
Likes: 1
From: atlanta Georgia
ok do you think I could put the 846 cam in my 1996 if....
I go to stg 3 ported lt4 heads, 1.6 rrs, lt4 intakes ported to match?
along with my current mods, hedman lts, muffler elims, under drive pullies, ac delete?
thanks alot your friend
Sean
I go to stg 3 ported lt4 heads, 1.6 rrs, lt4 intakes ported to match?
along with my current mods, hedman lts, muffler elims, under drive pullies, ac delete?
thanks alot your friend
Sean
Burning Brakes
Joined: Nov 2002
Posts: 1,239
Likes: 1
From: Las Vegas NV
Originally Posted by redbullapril23
ok do you think I could put the 846 cam in my 1996 if....
I go to stg 3 ported lt4 heads, 1.6 rrs, lt4 intakes ported to match?
along with my current mods, hedman lts, muffler elims, under drive pullies, ac delete?
thanks alot your friend
Sean
I go to stg 3 ported lt4 heads, 1.6 rrs, lt4 intakes ported to match?
along with my current mods, hedman lts, muffler elims, under drive pullies, ac delete?
thanks alot your friend
Sean
Race Director
Joined: Feb 2001
Posts: 13,911
Likes: 101
From: Manassas VA
NoVa Events Coordinator
St. Jude Donor '14
I plan on installing my new 383 with the GM847 in two weeks. This will be my first motor swap so I hope all goes well. I post dyno sheet by mid/end FEB...