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Engine @ ~100,000 miles, runs good but all original, what to do? [message #332564]

Fri, 25 May 2018 18:51

GMC2000

Messages: 193
Registered: March 2018
Location: Georgia

Karma:

Senior Member

most all the coaches Ive looked at are approaching 100,000 miles and the engine history is mostly unknown but lets say you get one with 100,000 on the clock that is running great and appears to be bone stock.

what service/maintenance, upgrades, and mods would you do to it right off the bat?

outside of the usual compression test, and from my reading up on these 455s so far:

-double roller Timing chain and sprockets
-remove intake manifold and install block off plates
-remove mechanical fuel pump and install block off plate and carter electric pump (or two)
-remove exhaust manifolds/headers and install remflex gaskets
-replace water pump with new roller bearing one and keep the old one as a known good spare for emergency useage
-replace oil cooler lines with new stainless braided lines
-upgrade to HEI ignition if existing one is mechanical
-replace starter with new and keep old one as a known good spare for emergency usage
-replace all belts, hoses, filters and keep old ones for spares

what else? is a knock sensor and indicator really a must have right away?

I havnt seen much stuff about any carb upgrades or mods except fuel injection and thats not something to do right away. how about adding an O2 sensor or two and a mixture indicator gauge?

or what other engine stuff do you think should be done A.S.A.P.?

oh yeah, lower radiator grille/guard if it hasnt one already. anything else to do before you take off for a +1000mi road trip?

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[Message index]

		Engine @ ~100,000 miles, runs good but all original, what to do? By: GMC2000 on Fri, 25 May 2018 18:51
		Re: Engine @ ~100,000 miles, runs good but all original, what to do? By: tphipps on Fri, 25 May 2018 19:18
		Re: [GMCnet] Engine @ ~100, 000 miles, runs good but all original, what to do? By: USAussie on Fri, 25 May 2018 20:12
		Re: Engine @ ~100,000 miles, runs good but all original, what to do? By: JohnL455 on Fri, 25 May 2018 19:58
		Re: Engine @ ~100,000 miles, runs good but all original, what to do? By: Matt Colie on Fri, 25 May 2018 20:48
		Re: [GMCnet] Engine @ ~100, 000 miles, runs good but all original, what to do? By: Mike Kelley on Fri, 25 May 2018 20:40
		Re: [GMCnet] Engine @ ~100, 000 miles, runs good but all original, what to do? By: James Hupy on Fri, 25 May 2018 20:53
		Re: [GMCnet] Engine @ ~100, 000 miles, runs good but all original, what to do? By: Bruce Hart on Fri, 25 May 2018 20:54
		Re: [GMCnet] Engine @ ~100, 000 miles, runs good but all original, what to do? By: Carl S. on Fri, 25 May 2018 21:20
		Re: Engine @ ~100,000 miles, runs good but all original, what to do? By: George Beckman on Fri, 25 May 2018 21:38
		Re: [GMCnet] Engine @ ~100, 000 miles, runs good but all original, what to do? By: James Hupy on Fri, 25 May 2018 21:49
		Re: [GMCnet] Engine @ ~100, 000 miles, runs good but all original, what to do? By: GMC2000 on Fri, 25 May 2018 22:45
		Re: Engine @ ~100,000 miles, runs good but all original, what to do? By: Tom Lins on Fri, 25 May 2018 21:56
		Re: Engine @ ~100,000 miles, runs good but all original, what to do? By: GMC2000 on Fri, 25 May 2018 22:38
		Re: Engine @ ~100,000 miles, runs good but all original, what to do? By: roy1 on Fri, 25 May 2018 23:48
		Re: Engine @ ~100,000 miles, runs good but all original, what to do? By: rjw on Sat, 26 May 2018 09:02
		Re: Engine @ ~100,000 miles, runs good but all original, what to do? By: GMC2000 on Sun, 27 May 2018 15:31
		Re: [GMCnet] Engine @ ~100, 000 miles, runs good but all original, what to do? By: johnd01 on Sun, 27 May 2018 16:42
		Re: [GMCnet] Engine @ ~100, 000 miles, runs good but all original, what to do? By: GMC2000 on Sun, 27 May 2018 17:11
		Re: [GMCnet] Engine @ ~100, 000 miles, runs good but all original, what to do? By: Carl S. on Sun, 27 May 2018 17:17
		Re: [GMCnet] Engine @ ~100, 000 miles, runs good but all original, what to do? By: Keith V on Mon, 28 May 2018 21:59
		Re: [GMCnet] Engine @ ~100, 000 miles, runs good but all original, what to do? By: jimk on Mon, 28 May 2018 23:39
		Re: [GMCnet] Engine @ ~100, 000 miles, runs good but all original, what to do? By: powwerjon on Tue, 29 May 2018 09:00
		Re: [GMCnet] Engine @ ~100, 000 miles, runs good but all original, what to do? By: James Hupy on Tue, 29 May 2018 09:14

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