Saginaw 4spd guys - The 1947 - Present Chevrolet & GMC Truck Message Board Network

jr2 · 03-28-2007, 02:10 PM

I have always been an automatic trans guy. (I do/have owned manuals but they didn't have any wires hooked to em!)
Anyone know which switch is for the backup circuit on a Saginaw 4speed like this? < The one towards the front of the trans or the Rear>?

I know that one is neutral safety switch but which one. I surfed the heck out of the wb but am coming up with nothing? I ahve also tried to test with a multimeter but? No workie? Maybe the switch is bad?

Thanks much,

-John

Bishops Trucks · 03-28-2007, 02:18 PM

I believe it is the one closest to the linkage cover.

jr2 · 03-28-2007, 03:40 PM

Quote:

Originally Posted by Bishops Trucks

I believe it is the one closest to the linkage cover.

Well.. ? They are both "closest" to the linkage cover? See modified pic w/arrows:

Bishops Trucks · 03-29-2007, 11:22 AM

Quote:

Originally Posted by jr2

Well.. ? They are both "closest" to the linkage cover? See modified pic w/arrows:

I was referring to the one at the back of the cover. I didn't even notice the one at the front.

jr2 · 03-29-2007, 12:08 PM

Thanks guys. I'll pull it out this weekend and double check it. A new one is only like $6 bucks.... Now I know more about manual trannies. Thanks for enlightening me.

benoit454 · 03-28-2007, 04:17 PM

I think the one on the right next to that knob is the reverse one because that knob is for reverse. I'd say the front is the neutral safety switch or whatever.

I have a saginaw 4 spd. and it doesn't have ANY switches lol.

jr2 · 03-28-2007, 04:21 PM

Quote:

Originally Posted by benoit454

I think the one on the right next to that knob is the reverse one because that knob is for reverse. I'd say the front is the neutral safety switch or whatever.

I have a saginaw 4 spd. and it doesn't have ANY switches lol.

That was my best educated guess because of that too.. It must be bad because the switch never made continuity with the meter. I'll have to get one.. Should be a few buck$ (I hope)

Srubydo1986 · 03-28-2007, 05:13 PM

My saginaw looks nothin like that mines the granny 4 speed. I was told its a saginaw but heck i could be wrong. as for the wire i agree with them make sents on my end

benoit454 · 03-28-2007, 08:32 PM

I think most of the granny trannys are the sm465 or whatever correct? or a "top loader" since the shifter is on the top of it like a t5 or something.

Hoods69BadBowTie · 03-28-2007, 09:06 PM

Yeah most of the granny lows are the sm465s, but as for the wire i agree with them make sense to me as well.

**Captkaos** · 03-29-2007, 11:18 AM

The reverse switch is definitely on the reverse arm. The one on the 1/3 arm is the neutral safety switch.

jimfulco · 03-29-2007, 11:38 PM

The front switch is for the TCS (transmission-controlled spark) system, which deactivates the vacuum advance in all gears except 4th. It's a smog device.

http://www.dandltransmission.com/saginaw.html has gear ratio ID info and parts.

03-28-2007, 02:10 PM	#1
jr2 Registered User Join Date: Jun 2003 Location: Snohomish,Washington Posts: 226	Saginaw 4spd guys I have always been an automatic trans guy. (I do/have owned manuals but they didn't have any wires hooked to em!) Anyone know which switch is for the backup circuit on a Saginaw 4speed like this? < The one towards the front of the trans or the Rear>? I know that one is neutral safety switch but which one. I surfed the heck out of the wb but am coming up with nothing? I ahve also tried to test with a multimeter but? No workie? Maybe the switch is bad? Thanks much, -John

03-28-2007, 02:18 PM	#2
Bishops Trucks KEEP ON TRUCKIN' Join Date: Jun 2005 Location: Sterling, Va. Posts: 5,730	Re: Saginaw 4spd guys I believe it is the one closest to the linkage cover. __________________ JIM '97 GMC Sierra K1500 '95 Chevy Silverado C1500 '71 Cheyenne Z71 / LT1 & 4-Speed SWB K/10 Father/Son Project http://www.youtube.com/watch?v=4l689JKXPnA http://67-72chevytrucks.com/vboard/payments.php "LIVIN' FREE FOREVER"

03-29-2007, 12:08 PM	#5
jr2 Registered User Join Date: Jun 2003 Location: Snohomish,Washington Posts: 226	Re: Saginaw 4spd guys Thanks guys. I'll pull it out this weekend and double check it. A new one is only like $6 bucks.... Now I know more about manual trannies. Thanks for enlightening me. __________________ -John II "A Little's Good! A Lot's Better! & Too Much is Just Right!!" -1978 Chevy C10 Stepside 350/4sp/12 bolt -1967 Nova 2dr HT & a couple others...

03-28-2007, 04:17 PM	#6
benoit454 Chris Join Date: Nov 2004 Location: Monaville, WV Posts: 3,737	Re: Saginaw 4spd guys I think the one on the right next to that knob is the reverse one because that knob is for reverse. I'd say the front is the neutral safety switch or whatever. I have a saginaw 4 spd. and it doesn't have ANY switches lol. __________________ Chris GIT R DONE!!!!!! Check out all our rides, http://www.cardomain.com/id/benwa454

03-28-2007, 05:13 PM	#8
Srubydo1986 The Crazy Machanic Join Date: Jan 2007 Location: Nokesville Va Posts: 1,437	Re: Saginaw 4spd guys My saginaw looks nothin like that mines the granny 4 speed. I was told its a saginaw but heck i could be wrong. as for the wire i agree with them make sents on my end __________________ 1986 Sliverado longbed 400 small block mean as hell, 700r4 trans (5 speed coming one day) 1970 chevelle 2dr sedan Latest update June 24 2007. *1957 4 door stationwagon - pink all original needing a good restore (body great, floors bad) newest additions 1965 shortbed fleet great granddads. Been told im nuts to bring it back from the dead (still going to happen) plans-all stock with a turbo 292 inline 3 speed column shift. and thats it big block 427 and 5 speed trans and ford 9 inch theyhave no home yet thinking what to put them in and a 79 c60 trash truck um no idea i have one

03-28-2007, 08:32 PM	#9
benoit454 Chris Join Date: Nov 2004 Location: Monaville, WV Posts: 3,737	Re: Saginaw 4spd guys I think most of the granny trannys are the sm465 or whatever correct? or a "top loader" since the shifter is on the top of it like a t5 or something. __________________ Chris GIT R DONE!!!!!! Check out all our rides, http://www.cardomain.com/id/benwa454

03-28-2007, 09:06 PM	#10
Hoods69BadBowTie Chevys Kick A$$ Join Date: Jan 2005 Location: Zootown, MT Posts: 12,699	Re: Saginaw 4spd guys Yeah most of the granny lows are the sm465s, but as for the wire i agree with them make sense to me as well. __________________ HOODS is what I answer too -'79, '77, '88 Pickup Sold, '85 Camaro, '83 T/A, '81,'83,'90 K5 Blazer All Sold -'79 3/4 ton "Big Yellow Bananna" Lifted 4spd. 39.5 TSL Swampers, The money Pit -'86 K5 Blazer Silverado 6.2 4" lift 35"s -'95 Ext. Cab Shorty 4" Tuff Country rolling 35" M/T's -'83 Monte Carlo T-Tops. 126,500 Original Miles -LATER I would rather push a Chevy then drive a ford!!

03-29-2007, 11:18 AM	#11
Captkaos www.73-87chevytrucks.com Join Date: Dec 1999 Location: Birmingham, AL Posts: 6,935	Re: Saginaw 4spd guys The reverse switch is definitely on the reverse arm. The one on the 1/3 arm is the neutral safety switch. __________________ Chris Lucas 1973 Chevy C-10 1978 GMC Jimmy (2WD) - SOLD 1987 R10 twin turbo LS 1991 R3500 SRW CrewCab 1985 K5 diesel swapped project 1989 K5 2WD conversion w/ Vette susp Project Captkaos Customs 73-87chevytrucks.com

03-29-2007, 11:38 PM	#12
jimfulco Registered User Join Date: May 2003 Location: Shreveport LA Posts: 3,170	Re: Saginaw 4spd guys The front switch is for the TCS (transmission-controlled spark) system, which deactivates the vacuum advance in all gears except 4th. It's a smog device. http://www.dandltransmission.com/saginaw.html has gear ratio ID info and parts.



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