July 6, 2020

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by Bret Schmerker
Sat Jul 25, 2020 5:22 am
Forum: TRANSMISSION
Topic: Manual Transmissions in Astro/Safari Vans (History Question)
Replies: 11
Views: 7208

Re: Manual Transmissions in Astro/Safari Vans (History Question)

:swords: Looks as though MAGNA® GETRAG® has a possible upgrade-gearbox candidate applicable to AWD as well as RWD: The 7MTI550, planned to back a 4-2.3 EcoBoost™ in the Ford® Bronco® from 2021, packs an even shorter low than the TREMEC® TR-3160B and a pair of staged overdrives. Ratios -- Reverse: -5...
by Bret Schmerker
Thu Jun 25, 2020 5:15 pm
Forum: SUSPENSION
Topic: Hd leafs?
Replies: 10
Views: 4528

Re: Hd leafs?

:cheers: Thanks for the clue on multileaves for the rear end. UCF America P/N 22-687-ME is almost a shortlist for the 9" full-float when I place the order to Currie Enterprises, Inc., in south State; I also plan on disc/drum upgrade brakes but need to ascertain the correct dimensions of rotor, shoul...
by Bret Schmerker
Thu Jun 25, 2020 5:00 pm
Forum: STEERING
Topic: Railroad-grade idler arms?
Replies: 2
Views: 206

Railroad-grade idler arms?

:-k General Motors Corporation seems to have undersized the bearings for the M-body steering linkage; even the MOOG® stock-replacement idler arms, which are made of better alloys than the ACDelco®/GM original, give out sooner than ideal. Among the rebuild contingencies I'm preplanning for my 1997 M1...
by Bret Schmerker
Wed Jun 24, 2020 1:01 am
Forum: DIESEL
Topic: Potential drivelines for Cummins ISF2.8c-161
Replies: 1
Views: 635

Potential drivelines for Cummins ISF2.8c-161

With the engine compartments being small as they are in the General Motors M-body, I'm looking into contingency gearboxes and axles for the Cummins® Repower™ R2.8-161, a reasonably complete 503#-weighted installer package built around the ISF2.8c-161 cam-in-block/two-valves-per-rocker-arm inline fo...
by Bret Schmerker
Tue Jun 23, 2020 2:07 am
Forum: STEERING
Topic: Routing restoration for 1997 Safari PS/HB
Replies: 0
Views: 82

Routing restoration for 1997 Safari PS/HB

:-k My issue GMC M11006, I found to my chagrin, has an incorrect and porous hose, apparently a Hydro-Boost-to-gear hose with the high flare elbow cut off, for the return to pump. I already anticipate replacing the gear-side crimp bands with proper high-pressure clamps, as the angles may be incorrect...
by Bret Schmerker
Tue Jun 16, 2020 6:43 pm
Forum: FRONT AXLE / DRIVE AND CV SHAFTS
Topic: s10 unlocking axle
Replies: 52
Views: 16470

Re: s10 unlocking axle

I concur on the bad motor mounts. Not sure whether Energy Suspension still supports the General Motors M-body (Chevrolet Astro, GMC Safari) with polyurethane motor mounts, but urethane holds up to greater loads than rubber. But 3.42:1 looks awfully tall to me, unless ye're in a state (USA) with hig...
by Bret Schmerker
Tue Jun 16, 2020 6:32 pm
Forum: TIRES
Topic: Anyone running LT tires at this point?
Replies: 4
Views: 628

Re: Anyone running LT tires at this point?

Ye've either a 2003-up M11006 (16" rims stock) or upgrade rims. I'm currently running IRONMAN® RB-12 NWS all-seasons, 215/75R15 100S, 800kg @ 300 kPa (1764# @ 44 PSI), purchased in two stages at Tred Shed Tire Pros (Pittsburg, CA, USA); they've lighter sidewall construction than I'd like. I's actua...
by Bret Schmerker
Tue Jun 16, 2020 6:16 pm
Forum: GENERAL DISCUSSION
Topic: Tranny issues, would like opinions
Replies: 8
Views: 999

Re: Tranny issues, would like opinions

:fball: I's looking for a TREMEC® TR-3160B retrofit for my 1997 issue M11006, had to defer it for want of finances; the absolute minimum that I consider acceptable is a 4L80-E retrofit. Short of that, ATS Diesel Performance offers a reinforced 4L60-E as a stock upgrade (P/N 3061604164, $2,184.05 plu...
by Bret Schmerker
Tue Jan 21, 2020 10:34 pm
Forum: STEERING
Topic: Replacing 97 Astro Power Steering pump
Replies: 26
Views: 19753

Re: Replacing 97 Astro Power Steering pump

:bounce: When the shaft broke on my stock pump after 217,xxx miles, I was able to pull the pulley right off, once the serpentine belt was off (I jackstanded the front end of the M11006 for clearance for myself, the tools I needed, and a large drain pan for the old fluid first). Separating the pulley...
by Bret Schmerker
Tue Jan 14, 2020 3:31 am
Forum: ELECTRICAL
Topic: Retrofitting trailer wiring on a 1997 Safari
Replies: 5
Views: 3661

Re: Retrofitting trailer wiring on a 1997 Safari

\:D/ Update 4: LASFIT® has the nod for the exterior relamp. Headlamps: L1-9006 drive and L1-9005 pass beams, in either stock Guide/GM or upgrade ANZO® dual luminaires. Front directional/park/markers: L-3157A, L-T10A, in stock Guide/GM luminaires. Rear brake/tail/turn/reverse: T-1157R, L-T10A, T-1156...
by Bret Schmerker
Thu Jan 09, 2020 6:42 am
Forum: TRANSMISSION
Topic: Manual Transmissions in Astro/Safari Vans (History Question)
Replies: 11
Views: 7208

Re: Manual Transmissions in Astro/Safari Vans (History Question)

:cheers: @doyoulikeithere Thanks for confirming my research into a stickshift retrofit. For my 1997 GMC® M11006, the gearbox I'm really after is not a BORG X WARNER® World Class T-5™ - rather, a TREMEC® TR-3160B with Small-Block Chevy bellhousing. Already anticipated shortening the propshaft, as the...
by Bret Schmerker
Thu Jan 09, 2020 5:52 am
Forum: TRANSMISSION
Topic: 2000 column shift linkage problem
Replies: 7
Views: 2342

Re: 2000 column shift linkage problem

@steeplecab My 1997 GMC® M11006 has the same column design as broke on you. Haven't needed to remove 'em so far, but the upper and lower shrouds should be joined with a number of either Philips- or Torx-head sheetmetal screws. Remove these and the Combination Switch (left) and Ignition Switch Assem...
by Bret Schmerker
Thu Dec 26, 2019 7:16 am
Forum: AUDIO / VIDEO
Topic: Adding an AUX input to your Delco Stereo
Replies: 11
Views: 12921

Re: Adding an AUX input to your Delco Stereo

:whistle: What GM Part Number the nine-pin shell? I am currently considering three flavors of 1 Factory Radio Cat. No. 638.01007C AM/FM/Compact-Cassette receivers with Dolby Laboratories Noise Reduction Type B (all professional remanufactures of General Motors P/N 15757047 as used in the 1996-2005 C...
by Bret Schmerker
Sat Nov 23, 2019 7:24 pm
Forum: ELECTRICAL
Topic: Retrofitting trailer wiring on a 1997 Safari
Replies: 5
Views: 3661

Re: Retrofitting trailer wiring on a 1997 Safari

:-k Update 3: One thing I'll need for a watertight, flood-proof connection for harnesses such as the Pollak® PK 11-998 or equivalent? A properly-specificated CANNON® connector set through the bottom of the jack compartment. With two pins needing 100 max A current capacity, two pins 50 max A, and the...
by Bret Schmerker
Sat Nov 23, 2019 6:41 pm
Forum: TOWING
Topic: Hitch for '03 Cargo
Replies: 4
Views: 3545

Re: Hitch for '03 Cargo

:bounce: I did some advance research on receivers for my M11006 and found two acceptable models offered by etrailer® . Ye know about the DRAW-TITE® Model 75122 (3500# gross / 350# tongue weight-carrying; 6000# gross / 600# tongue weight-distributing), incidentally my first choice on fit for an exten...