8.1L conversion
12-28-2006, 11:07 PM
#1
On The Tree
Thread Starter
Join Date: Aug 2006
Location: Baytown Tx.-Mc Allen Tx
Posts: 137
Likes: 0
Received 0 Likes
on
0 Posts
8.1L conversion
Does anybody have information on an 8.1L conversion into a 1/2ton 99-07 gm truck what do i need what parts are needed to complete swap amd what mods do i have to do.......
12-28-2006, 11:12 PM
#2
formerly silverbrick (changed 02/17/2013)
iTrader: (5)
Join Date: Mar 2006
Location: Pasadena, Tx
Posts: 4,525
Likes: 0
Received 0 Likes
on
0 Posts
i'm pretty sure it is very difficult. I am also unsure as to if the motor will even fit between the frame rails. might I ask why you are converting to the big block?
Trending Topics
12-30-2006, 02:13 PM
#8
TECH Regular
iTrader: (3)
Join Date: Jan 2005
Location: Magnolia, Texas
Posts: 456
Likes: 0
Received 0 Likes
on
0 Posts
My 7,000 lbs. 2500HD with the Allison was running over 85 MPH in the quarter mostly stock. Safe to say it had over 200 hp. If you don't change the fuel filter on a 8.1 every 25K you'll loose a lot of power in no time. Not to mention plugs, etc. The PCM tries it's damnest to prevent the 8.1 from raising hell also. If you don't test in Tow/Haul to lock the converter you'll never get a good reading. Also all the torque management in 1st and 2nd gear.
Tie Rod had his dyno'ed with a CAI, HyperTech, and mufflers and put up 285+ at the wheels.
My 8.1 powered 2500hd 4x4 ccsb with a bunch of heavy crap on it smokes small block and diesel powered stuff all the time. Should I put a small block in it to go faster?
https://www.performancetrucks.net/fo...ight=big+block
Vernon
Tie Rod had his dyno'ed with a CAI, HyperTech, and mufflers and put up 285+ at the wheels.
My 8.1 powered 2500hd 4x4 ccsb with a bunch of heavy crap on it smokes small block and diesel powered stuff all the time. Should I put a small block in it to go faster?
https://www.performancetrucks.net/fo...ight=big+block
Vernon
01-02-2007, 09:38 PM
#9
TECH Enthusiast
Join Date: Jun 2005
Location: Owensboro, Ky
Posts: 748
Likes: 0
Received 0 Likes
on
0 Posts
http://video.performancetrucks.net/v...85bfb6394e.htm check this 8.1 out..i know its from here....but damn hes quick
01-02-2007, 10:03 PM
#10
TECH Enthusiast
Join Date: Jan 2004
Location: KC MO
Posts: 712
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by ChevyMan23
http://video.performancetrucks.net/v...85bfb6394e.htm check this 8.1 out..i know its from here....but damn hes quick
