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05-01-2019, 08:07 PM
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#1
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Name: NJ_24V
Title: Rookie
Status: Not Here
Join Date: May 2019
Location: New Jersey
Member`s Gallery
Posts: 20
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6.7 crankshaft in 5.9??
Hello,
I am wondering if the 6.7 crankshaft will fit a 98 24v block and/or what mods would be necessary for fitment. I know people are putting them in the 03 and up 5.9s but couldnt find anything on putting them in the 98.5-02 5.9. I'm assuming it would fit but if anyone could tell me for sure I'd appreciate it
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05-01-2019, 10:25 PM
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#2
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Name: Inbred Inline
Title: Bastard child builder
Status: Not Here
Join Date: Dec 2014
Location: SE Michigan
Member`s Gallery
Posts: 370
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It will fit fine, you will have to shave the pistons to deal with the extra stroke, stock rods will clear but I have had to notch cylinders with aftermarket ones.
__________________
1994 Chevy RCLB C1500 6BT NV4500
2011 GMC CCLB 3500HD LML - STOCK
1992 Club Car, Kubota z430 "Inbred Inline Jr"
2000 Chevy CCSB C3500 3.0 Pro Stock 4x4 "Inbred Inline"-broken junk
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05-01-2019, 11:49 PM
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#3
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Name: smoken02
Title: Too Much Time
Status: Not Here
Join Date: Feb 2007
Location: Streator, Illinois
Member`s Gallery
Posts: 1,412
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Why not go 6.7? Sticking with the vp?
__________________
14' Cummins C/C DRW 3500 4x4 G56
94’ Reg Cab 4x4 Just Rollin
R.I.P
02 Dodge QC/SB 4x4, Drag Comp,BD RAD, ARP studs, DDP HRVP44, HTT 62/71/14,SDX 200's,Killer B, Goerend trans,Billet input shaft, Billet Flexplate, AirdogII 200gph pump
13.16 @ 104mph 1/4 mile
Aaron
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05-02-2019, 07:01 AM
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#4
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Name: YoungDiesel27
Title: Never Enough Time
Status: Not Here
Join Date: Jul 2010
Location: West Virginia
Member`s Gallery
Posts: 825
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Does your engine currently have a crank sensor? If so you won’t have the time ring on the 6.7 crankshaft
__________________
EFI Live, HP Tuners, Smarty custom tuning
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05-02-2019, 12:05 PM
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#5
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Name: NJ_24V
Title: Rookie
Status: Not Here
Join Date: May 2019
Location: New Jersey
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Posts: 20
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@Inbred Inline thank you
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05-02-2019, 12:13 PM
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#6
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Name: NJ_24V
Title: Rookie
Status: Not Here
Join Date: May 2019
Location: New Jersey
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Posts: 20
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@smoken02 well I dont need a whole new engine, but my piston rings are going. And it would be cheaper for me to do a full build on my 5.9 than buy a running 6.7 with the harness and ecm. So I'm thinking just stick to the 5.9
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05-02-2019, 12:15 PM
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#7
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Name: NJ_24V
Title: Rookie
Status: Not Here
Join Date: May 2019
Location: New Jersey
Member`s Gallery
Posts: 20
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@YoungDiesel27 yes my block has the crank sensor. Would there be away to get around that?
Last edited by NJ_24V; 05-02-2019 at 12:19 PM.
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05-02-2019, 06:07 PM
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#8
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Name: 95cummins5.9
Title: Old man ***** gossiper
Status: Not Here
Join Date: Jun 2012
Location: U.S.A
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Posts: 4,720
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The gear will need swapped
__________________
Quote:
Originally Posted by jfaulkner
puzzy, tune it.
I don't own anything stock, from engines to boobies I've modded them all. Life is too short to live with mediocre chit.
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05-02-2019, 08:41 PM
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#9
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Name: YoungDiesel27
Title: Never Enough Time
Status: Not Here
Join Date: Jul 2010
Location: West Virginia
Member`s Gallery
Posts: 825
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Quote:
Originally Posted by NJ_24V
@YoungDiesel27 yes my block has the crank sensor. Would there be away to get around that?
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I’ve done one where we just converted it over to cam/combo wiring, cam gear and ECM but the dash didn’t get along. Ours was not a street truck so it didn’t matter. Issue with the early engines is there is no precision for the tone wheel on the 6.7 crank
__________________
EFI Live, HP Tuners, Smarty custom tuning
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05-02-2019, 11:09 PM
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#10
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Name: smoken02
Title: Too Much Time
Status: Not Here
Join Date: Feb 2007
Location: Streator, Illinois
Member`s Gallery
Posts: 1,412
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Quote:
Originally Posted by NJ_24V
@smoken02 well I dont need a whole new engine, but my piston rings are going. And it would be cheaper for me to do a full build on my 5.9 than buy a running 6.7 with the harness and ecm. So I'm thinking just stick to the 5.9
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I’d say that’s your best bet. . If this is just a street truck play toy I think being able to say you have a 6.7 crank is about the most you’ll get out of it. Especially on a vp truck.
__________________
14' Cummins C/C DRW 3500 4x4 G56
94’ Reg Cab 4x4 Just Rollin
R.I.P
02 Dodge QC/SB 4x4, Drag Comp,BD RAD, ARP studs, DDP HRVP44, HTT 62/71/14,SDX 200's,Killer B, Goerend trans,Billet input shaft, Billet Flexplate, AirdogII 200gph pump
13.16 @ 104mph 1/4 mile
Aaron
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05-03-2019, 05:46 PM
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#11
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Name: NJ_24V
Title: Rookie
Status: Not Here
Join Date: May 2019
Location: New Jersey
Member`s Gallery
Posts: 20
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@smokin02 I am keeping it a vp street truck, but I figured if it was easy enough to do the crank swap and squeeze out some more torque then why not.
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05-03-2019, 05:51 PM
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#12
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Name: NJ_24V
Title: Rookie
Status: Not Here
Join Date: May 2019
Location: New Jersey
Member`s Gallery
Posts: 20
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@YoungDiesel27 what about relocating the crank sensor and using a fluid damper with a built on tone ring?!
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05-03-2019, 05:54 PM
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#13
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Name: NJ_24V
Title: Rookie
Status: Not Here
Join Date: May 2019
Location: New Jersey
Member`s Gallery
Posts: 20
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@95cummins5.9 I know the front gear is different I just didn't know about block provisions
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05-03-2019, 07:39 PM
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#14
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Name: YoungDiesel27
Title: Never Enough Time
Status: Not Here
Join Date: Jul 2010
Location: West Virginia
Member`s Gallery
Posts: 825
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Quote:
Originally Posted by NJ_24V
@YoungDiesel27 what about relocating the crank sensor and using a fluid damper with a built on tone ring?!
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Guess it would be easy enough to machine and add the factory wheel to the damper, then make a bracket and extend the wiring harness
__________________
EFI Live, HP Tuners, Smarty custom tuning
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05-04-2019, 11:30 AM
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#15
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Name: NJ_24V
Title: Rookie
Status: Not Here
Join Date: May 2019
Location: New Jersey
Member`s Gallery
Posts: 20
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@YoungDiesel27 guess if iwant to do the swap I'll have to take some time and mess with it
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05-04-2019, 11:43 AM
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#16
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Name: Redrider2911
Title: Too Much Time
Status: Not Here
Join Date: Nov 2015
Location: Yakima, WA
Member`s Gallery
Posts: 780
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How much needs shaved off the pistons? How much is left between top of piston and first ring?
__________________
49 Willys Pickup. 5600lb. 11.8sec @115mph 1/4. 12 valve. MegaSquirted 47RH. 3.54 posi rear. 35" tires. 64mm HE351ve, S475 (75/96/1.32), A/W Intercooler. AFC mods. 5x16s. 191 DVs, 180 pump. 23*. 85psi. Build Thread
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05-04-2019, 03:16 PM
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#17
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Name: YoungDiesel27
Title: Never Enough Time
Status: Not Here
Join Date: Jul 2010
Location: West Virginia
Member`s Gallery
Posts: 825
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Quote:
Originally Posted by Redrider2911
How much needs shaved off the pistons? How much is left between top of piston and first ring?
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Approximately 0.080”, just gonna depend on what you want for compression.
__________________
EFI Live, HP Tuners, Smarty custom tuning
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05-04-2019, 04:46 PM
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#18
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Name: TMONEYDIESEL
Title: Comp Diesel Sponsor
Status: Not Here
Join Date: Jan 2007
Member`s Gallery
Posts: 8,706
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I say if you want to do it then do it, you pick up a little displacement and go ahead and do some other upgrades. Port the head a little with some better valves etc. people forget we need this stuff to continue or their wont be anything left.
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MANNING MOTORSPORTS
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YOUR SOURCE FOR:
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05-12-2019, 01:05 PM
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#19
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Name: Redrider2911
Title: Too Much Time
Status: Not Here
Join Date: Nov 2015
Location: Yakima, WA
Member`s Gallery
Posts: 780
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So I’m looking at doing this on my 12v. I already have my complete rebuild kit with .020” over 286210 pistons estimating 16.5:1 compression ratio. My plan is to run a .020” over head gasket as well and take minimal material off the deck but a decent amount off the head to help unshroud the valves. I’m hoping with the .020” over head gasket i will only have to take .060” off the pistons or maybe even less. I will measure piston protrusion and set the quench height to .025-.030” by machining the pistons accordingly. I believe i will be fine on the compression side of things, my main concern is valve clearance as i would like to take as much off the head as possible (unless someone advises against that). Right now i am running the stock cam and honestly don’t know if i will ever change that.
__________________
49 Willys Pickup. 5600lb. 11.8sec @115mph 1/4. 12 valve. MegaSquirted 47RH. 3.54 posi rear. 35" tires. 64mm HE351ve, S475 (75/96/1.32), A/W Intercooler. AFC mods. 5x16s. 191 DVs, 180 pump. 23*. 85psi. Build Thread
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