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#1 |
Registered User
![]() Join Date: Nov 2002
Location: Mt. Vernon, WA..
Posts: 2,322
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Ever seen these before?
parting out a 69 1 ton and pulled the guage cluster and there was a clamp type thingy on the end of the speedo. The threads weren't stripped, so why would this be on there? Then on the tranny, there's this blue canister hooked to the vacuum line, I think, what is that for? Thanks.
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#2 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: Ever seen these before?
The cable thing may be a repaired cable... a generic length that you chop to size, then clamp on the end.
That's just a guess. The deal on the tranny... that looks like a huge vac modulator to me. |
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#3 |
Lurky lurky
Join Date: Sep 2005
Location: Maryville, TN
Posts: 553
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Re: Ever seen these before?
Agreed on the speedo cable and the tranny looks like an auxilery filter if I had to guess.
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#4 |
Senior Member
![]() Join Date: Sep 2005
Location: Lewisville, Nc
Posts: 10,234
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Re: Ever seen these before?
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__________________
David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube |
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#5 |
Senior Member
![]() Join Date: Jul 2004
Location: Estherville, Iowa
Posts: 3,371
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Re: Ever seen these before?
Older original style vacuum modulator on the turbo 400. Pretty common, but most were painted black.
__________________
1968 C10 307 3spd Long Fleet ------ http://67-72chevytrucks.com/vboard/s...d.php?t=201103 1970 C10 305 Super T10 Long Fleet --- http://67-72chevytrucks.com/vboard/s...d.php?t=202285 1971 C20 383 TH350 Dana Posi ----- http://67-72chevytrucks.com/vboard/s...d.php?t=206894 2001 GMC Sierra 1500 C3 6.0 |
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#6 |
Registered User
![]() Join Date: Nov 2002
Location: Mt. Vernon, WA..
Posts: 2,322
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Re: Ever seen these before?
400 turbo behind a 292, must be common on 1 tons. thanks!
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#7 |
Senior Member
Join Date: Feb 2005
Location: Maynardville, Tn
Posts: 3,030
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Re: Ever seen these before?
My guess on the speedo would be a anti-tamper device used to keep drivers from unhooking the cable and then driving the vehicle for their own use.
Second item is a modulator valve.
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SEMA Network- Protect our Hobby! 71 C30 in pieces, starting to come together. Click here for A Place For Tennessee Truck Enthusiest To Meet |
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#8 |
Registered User
Join Date: Jun 2004
Location: Beeville, Texas
Posts: 1,943
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Re: Ever seen these before?
Yep, the 400 in my truck has one of those old style modulators. The new replacements are small and look way different. I've never seen one of those speedometer things before though.
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RJD 1984 Chevrolet C30 welding truck 454/SM465 1977 GMC C15 pickup 350/TH350 1970 Chevrolet C20 pickup 350/TH400 1970 Chevrolet K20 Suburban 454/TH350 1969 GMC 8500 478M V6/5 spd winch truck |
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#9 |
Senior Member
Join Date: Dec 2004
Location: Southern Pines NC
Posts: 3,853
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Re: Ever seen these before?
I have seen those on school buses in the junk yard. I would have to guess that it is an anti-tamper thing
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#10 |
MEMBER
Join Date: Mar 2006
Location: garden grove, ca
Posts: 185
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Re: Ever seen these before?
Definate anti tamper for dealer warranty-mileage,Old style....
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