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modern engine swap [message #304100]

Sun, 24 July 2016 10:00

ns1113

Messages: 2
Registered: March 2016

Karma:

Junior Member

Hello,
I have read trough the forums where there is some mention of LS engine swaps and diesel swaps. I wondering if there is a trend to go with a more modern LS 8.1 engine rather the rebuild existing 455, adding FI etc...? I appreciate keeping things original, but wouldn't mind the improvements a more modern engine can offer. I might own this another 30-40 years and was thinking possibly better mpg, better performance and reliability.

With the diesel swaps it sounds like heavy frame fabrication is needed. With an 8.1 it appears that it should drop right in, can run the factory wiring harness and get adapter plates for the transmission. Any thoughts are appreciated.

Thanks,
Nick

Below are the specs I found for each engine. Which I am not sure accurate due to how they measured HP/Torque back in the 70's compared to now guessing there is a bigger discrepancy.

LS 8.1
Horsepower: 330 @ 4200 RPM
Torque: 450 @ 3200 RPM

455
Horsepower: 265 @ 4300
Torque: 375 @ 2800

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[Message index]

		modern engine swap By: ns1113 on Sun, 24 July 2016 10:00
		Re: modern engine swap By: Scott Nutter on Sun, 24 July 2016 10:11
		Re: [GMCnet] modern engine swap By: USAussie on Sun, 24 July 2016 10:20
		Re: modern engine swap By: Matt Colie on Sun, 24 July 2016 10:26
		Re: modern engine swap By: mrgmc3 on Sun, 24 July 2016 10:35
		Re: modern engine swap By: Jon payne on Sun, 24 July 2016 13:10
		Re: modern engine swap By: A Hamilto on Sun, 24 July 2016 14:11
		Re: modern engine swap By: xplorid on Tue, 26 July 2016 08:54
		Re: modern engine swap By: mrgmc3 on Sun, 24 July 2016 17:19
		Re: modern engine swap By: Jon payne on Sun, 24 July 2016 18:29
		Re: [GMCnet] modern engine swap By: James Hupy on Sun, 24 July 2016 18:43
		Re: [GMCnet] modern engine swap By: jimk on Sun, 24 July 2016 18:50
		Re: modern engine swap By: JohnL455 on Sun, 24 July 2016 19:23
		Re: [GMCnet] modern engine swap By: Ken Henderson on Sun, 24 July 2016 19:43
		Re: [GMCnet] modern engine swap By: J Green on Sun, 24 July 2016 20:19
		Re: [GMCnet] modern engine swap By: bdub on Sun, 24 July 2016 20:33
		Re: [GMCnet] modern engine swap By: gladius on Sun, 24 July 2016 22:30
		Re: [GMCnet] modern engine swap By: jimk on Mon, 25 July 2016 00:42
		Re: modern engine swap By: ns1113 on Mon, 25 July 2016 19:45
		Re: modern engine swap By: hal kading on Mon, 25 July 2016 23:16
		Re: [GMCnet] modern engine swap By: Ken Henderson on Mon, 25 July 2016 23:31
		Re: [GMCnet] modern engine swap By: Jon payne on Tue, 26 July 2016 11:28
		Re: [GMCnet] modern engine swap By: James Hupy on Tue, 26 July 2016 12:46
		Re: [GMCnet] modern engine swap By: hal kading on Tue, 26 July 2016 13:37
		Re: modern engine swap By: TR 1 on Tue, 26 July 2016 12:17
		Re: modern engine swap By: Matt Colie on Tue, 26 July 2016 15:02
		Re: modern engine swap By: jhbridges on Tue, 26 July 2016 12:56
		Re: modern engine swap By: Chris Tyler on Tue, 26 July 2016 13:34
		Re: [GMCnet] modern engine swap By: USAussie on Tue, 26 July 2016 15:10
		Re: [GMCnet] modern engine swap By: kerry pinkerton on Sun, 28 August 2016 12:20
		Re: [GMCnet] modern engine swap By: Matt Colie on Sun, 28 August 2016 21:21
		Re: modern engine swap By: LarryInSanDiego on Sun, 28 August 2016 00:48
		Re: modern engine swap By: Chris Tyler on Sun, 28 August 2016 08:00
		Re: modern engine swap By: jhbridges on Tue, 26 July 2016 17:40
		Re: modern engine swap By: Hal StClair on Tue, 26 July 2016 19:20
		Re: modern engine swap By: mrgmc3 on Tue, 26 July 2016 23:40
		Re: modern engine swap By: Matt Colie on Wed, 27 July 2016 07:04
		Re: [GMCnet] modern engine swap By: Olly Schmidt on Wed, 27 July 2016 06:35
		Re: modern engine swap By: jhbridges on Wed, 27 July 2016 08:23
		Re: modern engine swap By: jhbridges on Wed, 27 July 2016 08:25
		Re: [GMCnet] modern engine swap By: James Hupy on Wed, 27 July 2016 08:45
		Re: modern engine swap By: LarryInSanDiego on Sun, 28 August 2016 23:23
		Re: modern engine swap By: jhbridges on Mon, 29 August 2016 11:19
		Re: modern engine swap By: Matt Colie on Mon, 29 August 2016 18:52
		Re: modern engine swap By: jhbridges on Mon, 29 August 2016 11:23
		Re: modern engine swap By: Hal StClair on Wed, 31 August 2016 14:44
		Re: modern engine swap By: JimGunther on Wed, 31 August 2016 17:02
		Re: modern engine swap By: kerry pinkerton on Wed, 31 August 2016 17:27
		Re: modern engine swap By: A Hamilto on Wed, 31 August 2016 19:42
		Re: modern engine swap By: jhbridges on Mon, 29 August 2016 19:52
		Re: modern engine swap By: Larry on Tue, 30 August 2016 20:35
		Re: [GMCnet] modern engine swap By: USAussie on Tue, 30 August 2016 23:00
		Re: [GMCnet] modern engine swap By: jimk on Wed, 31 August 2016 00:03
		Re: modern engine swap By: jhbridges on Wed, 31 August 2016 17:27
		Re: modern engine swap By: JohnL455 on Wed, 31 August 2016 18:33

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