Turning up 8.3 Cummins? - Diesel Bombers
Diesel Bombers
Go Back   Diesel Bombers > Specific Purpose Diesels > Specific Purpose General Discussion > Big Rigs & Semis

Big Rigs & Semis Discussion of Diesels Used for Transportation of Goods

Hello again. A friend of mine has a service truck with a mechanical 8.3 Cummins mated to an allison automatic. I am guessing it weighs about 15-18,000lbs. It governs out at about 65 mph. I am almost positive it has the p7100 pump. How is ... JOIN NOW TO REMOVE TRACER

Turning up 8.3 Cummins?

LinkBack Thread Tools Search this Thread
Old 02-26-2009, 08:27 PM


Default Turning up 8.3 Cummins?

Hello again. A friend of mine has a service truck with a mechanical 8.3 Cummins mated to an allison automatic. I am guessing it weighs about 15-18,000lbs. It governs out at about 65 mph. I am almost positive it has the p7100 pump. How is the best way to go about giving it more power. Would you recommend sliding the fuel plate (forward I think), grinding on the fuel plate, buying a fuel plate, or some other means? Would a fuel plate work from a 5.9 cummins, probably not? I am guessing the factory hp is on the low end, maybe 225, and I can check. He wants to keep it simple, and I don't think he will need a pyrometer as it is an automatic, doesn't pull trailers, and doesn't want to bomb it. Thanks for the advice. Eddie
Reply With Quote
Old 02-26-2009, 09:34 PM
Diesel Wrench
i don't know if ya'll know this but i'm kind of a big deal



pretty heavy truck i would recommend the pyrometer, then probably slide the plate, if it governs out that slow then you may need to adjust the throttle for more revs

Reply With Quote
Old 02-26-2009, 09:59 PM
Whit's Avatar
Site Mascot



get a pyro and put a 100 plate in there nad hang on for about 25-30% more powa

install a BHAF for more air and make sure the exhaust is 4" or better all the way out

Whit's Sig:"Enjoy the day. Take what you want and leave the rest...."
Reply With Quote
Old 02-27-2009, 07:54 AM


Default Plate numbers

Is the 100 plate the same as a 100 plate for a 12 valve 5.9 Cummins? I don't know the numbering system or what they mean. What about just sliding the original plate or grinding on it? Thanks again
Reply With Quote
Old 03-09-2009, 10:19 PM
Diesel Fan



if its anything like my 8.3 the exhaust is already 4 inch. i would also like some info and pics if i could on turning up the power. thanks =John
Reply With Quote
Old 03-09-2009, 10:36 PM
bow2no1's Avatar
Diesel Bomber


outch 225hp.. my buddy just bought a boat with a 8.3 in it.
i think it's like 350hp... i'm pretty sure his has the p7100 i didn't get a real close look.
being a boat it already has a 7" exhaust no cat and bhaf
i tried to get him to hop it up a bit... he's to much of a wuss

bow2no1's Sig:
Reply With Quote
Old 03-10-2009, 07:43 AM
yj junker's Avatar
got me a new to me truck!!!!!

View Member's FaceBook Profile


the 8.3 have the same pump as the ih dt466 and I know I've seen some good write ups on how to turn them up but I don't remember where the links are

---AutoMerged DoublePost---

found the site Low buck diesel power | turn up your fuel rate for free, or almost
thanx nevrenufhp

yj junker's Sig:09 6.7 cummins QC/SB ,H&S egr & cooler deletes,Mini max tuner,5" flo pro exhaust,custom rail protector/headach rack,eagle alloy wheels and toyo open ctry 285/75/17's,buddy ramp tailgate A must have for loading

Last edited by yj junker; 03-10-2009 at 07:43 AM. Reason: Automerged Doublepost
Reply With Quote
The Following User Says Thank You to yj junker For This Useful Post:
Old 02-01-2013, 09:01 AM
nevrenufhp's Avatar
Diesel Enthusiast
DT466 fan

View Member's FaceBook Profile View Member's Youtube Account


Here's a couple videos of an F800 with a hopped up 8.3 in it. It has marine injectors and a #0 fuel plate(both from me), 3k gov springs, and an HX50 turbo. It's going from about 20mph to 65. He says it was not even close to full pedal(about half way to the floor). Plus, was only shifting at 2300rpm.
[url] http://i249.photobucket.com/albums/gg231/caseyray63/4a05240daaae5c186a91a0fe2817bf3d.mp4
[url] http://i249.photobucket.com/albums/gg231/caseyray63/cfe2c2d5ff8ab4212b1a460310a801e4.mp4
Sorry, you have to copy & paste.

nevrenufhp's Sig:Dale.
http://www.freewebs.com/nevrenufhp/index.htm Diesel fuel rate site of mine.
67 F100, 300, Edelbrock 4V, heddder, 4 spd, soon to be 12 valve Ford 6.6 from an F600.
work truk: 94 IH 4900, DT466-P-pump, #0 plate, 3 clicks on gov springs, and 22* timing, straight piped(it's on youtube).

Last edited by nevrenufhp; 02-01-2013 at 09:07 AM. Reason: oops
Reply With Quote

Similar Threads
Thread Thread Starter Forum Replies Last Post
99 cummins to 2001 cummins Shun70 Diesel Engine Conversions 0 09-21-2015 01:39 AM
An In-Depth Look At Hamilton Cams' 12-Valve Cummins Cylinder Head Diesel Bombers General Diesel Related 0 10-31-2014 08:10 AM
Cummins Details New Two-Stage Turbo for Nissan Titan Diesel Diesel Bombers General Diesel Related 0 10-24-2014 04:40 AM
96' Cummins 12v 5.9L - under 8 mpg! Please Help Omingnome Diesel In Distress - Support Ticket 5 10-20-2014 12:25 PM
Ram/ Cummins Celebrate 25 Years of Turbodiesel Trucks Diesel Bombers General Diesel Related 0 10-20-2014 08:10 AM

Thread Tools Search this Thread
Search this Thread:

Advanced Search

All times are GMT -5. The time now is 10:17 AM.

Copyright And Legal Notice Links Of Interest

Diesel Bombers ® - All Content Protected Under Intellectual Property Rights Law of Registered Trademarks
Reg. No. 3,494,401 Cls. 100, 101 & 104 Under Int. Cl. 38

Protected by Copyscape Duplicate Content Check

Diesel Bombers Dodge Cummins Forum Section Diesel Bombers Ford Powerstroke Forum Section Diesel Bombers Chevy GMC Duramax Forum Section