GM847 Cam Driveability
Thread Starter
TECH Enthusiast
iTrader: (20)
Joined: Nov 2005
Posts: 538
Likes: 1
From: Frisco, Texas
GM847 Cam Driveability please someone that has this cam jump in...im looking to use this on a newly rebuilt stock cube stock internal ported heads and intake car with all bolt ons, 30# injectors, tune,AS&M 58mm and msd digital 6...will this work? how is the idle and loping on the 847 and how is the power range and what are you running similar cars dynoing at
Not sure what mine runs or Dyno's yet, My 30# and tune go in today, I do not have a MSD or AS&M 58mm TB though....I am going to the track tomorow, so I will see what it does in the hell heat. As far a drivability, I drive mine every day. It not great on gas around town, but still good on the highway.
Do an 847 search you'll find a ton of info, I recommend a custom grind, I ran the 847 w/1.7rrs and all the boltons, stock cubes for a year or so & dynoed 373 & ran 12.6 1/4 ET. Badass cam, still recommend a custom grind though.
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?
Pouria Savadkouei
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Originally Posted by KWIK WS6
I have an 847 and just got 400rwhp with it. Could make a little more but ran out of fuel pump at 5k(stock pump) still spin's to 6800 but goe's lean.
can you tell us mor about the setup, mod list, cubes, Heads.
PM if u dont want to post please.
Originally Posted by TwoFast4Lv
Damn Brett I would hope that new combo makes more power then that 
I went 11.75 with that cam
I went 11.75 with that cam
damn Ellis, that's awesome you got almost a full second better than me with the 847, maybe it was the driver 
The new setup is gonna put it down hard, the new chassis/suspension is going to hook it up good I believe
Originally Posted by LT1BRN
can you tell us mor about the setup, mod list, cubes, Heads.
PM if u dont want to post please.
PM if u dont want to post please.
Joined: Nov 2001
Posts: 10,023
Likes: 6
From: LT1 land...the "409" of the 90s!
Originally Posted by BRETTINATOR
damn Ellis, that's awesome you got almost a full second better than me with the 847, maybe it was the driver The new setup is gonna put it down hard, the new chassis/suspension is going to hook it up good I believe
Yea it ran pretty well for a 350
just was not as consistant as I wanted. By summer it had slowed down to 12.20s.It's not offten we get Texas Weather here...and when we do you better hope the track is open
We just had that cam in a 396 and it made 437RWHP for a loss of 11hp over the cutom cam we were using. With the 238/245 cam the car made 448hp/453tq at the rear through an Auto and 12 bolt. Next we are going to have Bret cut a cam for it and try again.
BTW we played with it on the dyno with the 847 and managed to pick up over 30 RWTQ with just a little timing and fuel
This is the second Shop car. 396 C.I. ,LE AFR 210s ,Hooker LTs ,SSEFI proto Intake , and a Stock opti sytem
Good luck!
OH yeah one last thing! Last time we were at the track with this car it was yanking the wheels with 17 inch ET Street Drag Radials and a STOCK TQ arm
Originally Posted by TwoFast4Lv
Yea it ran pretty well for a 350 We just had that cam in a 396 and it made 437RWHP for a loss of 11hp over the cutom cam we were using. With the 238/245 cam the car made 448hp/453tq at the rear through an Auto and 12 bolt. Next we are going to have Bret cut a cam for it and try again.
We just had that cam in a 396 and it made 437RWHP for a loss of 11hp over the cutom cam we were using. With the 238/245 cam the car made 448hp/453tq at the rear through an Auto and 12 bolt. Next we are going to have Bret cut a cam for it and try again. Joined: Nov 2001
Posts: 10,023
Likes: 6
From: LT1 land...the "409" of the 90s!
Originally Posted by BRETTINATOR
847 is a baby cam for a 396, that's pretty impressive, they planning on swapping the other cam back in or go solid, what's in the works?
Yup we already have the other cam back in and we are going to have Bret design a pretty nasty HR for it. Jim wants 475 Rear wheel or more out of it
