Author Topic: SUBFRAME MEASUREMENTS  (Read 13629 times)

JasonD

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SUBFRAME MEASUREMENTS
« on: March 31, 2007, 08:20:04 AM »
1975-1981 SUBFRAMES


All measurements taken from mouting holes are taken from the EDGE of the holes with a regular old tape measure.....so you don't need any special tools out in the field. Remember these measurements are from the EDGE of the holes. All measurements should be equal from side to side



Measurement A: this is between the two front radiator support mounting holes from edge to edge......36 3/4 inches

Measurement B: this is from the upper shock mounting hole to the edge of the radiator support mount hole.......21 5/8 inches

Measurement C: this is taken from the rear most subframe mounting hole to the very front inside corner of the frame rail.......78 inches

Measurment D: this is the measurement from the edges of the upper control arm mounting brackets toward the front of the subframe......31 3/4 inches

Measurement E: measurement from the edges of the upper control arm mounting brackets toward the rear of the subframe......34 1/2 inches

Measurement F: this is taken from the edge of the rear subframe mounting hole to the edge of the middle subframe mounting hole........27 3/8 inches

Measurement G: this is the measurement from the edges of the rear most subframe mounting holes.......31 5/8 inches

Rob

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Re: SUBFRAME MEASUREMENTS
« Reply #1 on: October 31, 2008, 10:11:25 PM »
yess thanks for this Jason  :)  need to check my subframe, I think i might need a new 1

chris 79 ta

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Re: SUBFRAME MEASUREMENTS
« Reply #2 on: November 01, 2008, 11:23:40 PM »
got this from a friend when i installed my frame.
« Last Edit: November 01, 2008, 11:33:24 PM by chris 79 ta »

Rob

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Re: SUBFRAME MEASUREMENTS
« Reply #3 on: November 02, 2008, 05:53:15 PM »
got this from a friend when i installed my frame.

where'd your friend get that from? That doesn't show anywhere on my '78 or '79 Service Manual

chris 79 ta

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Re: SUBFRAME MEASUREMENTS
« Reply #4 on: November 04, 2008, 09:29:36 PM »
not quite sure . i live in mo he is from mich he faxed it to me so i could put my frame on and to make sure it is square with the body.   not just aligned with a couple of dowel holes.  you never know with our cars what has happened before we got them.

Re: SUBFRAME MEASUREMENTS
« Reply #4 on: November 04, 2008, 09:29:36 PM »

abarone300

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Re: SUBFRAME MEASUREMENTS
« Reply #5 on: November 07, 2008, 01:16:51 PM »
Very informative, will these measurements be the same for all 70-81 years?
Also would you have any idea what the average WALL THICKNESS and TOTAL WEIGHT of the frame should be.
I'm trying to establish if my frame is sound, and if the years of exposure to the elements and rust haven't deteriorated it's walls. Thanks
Aldo
Palermo, Italy

Blue 79 auto 403 olds T/A -  got stolen (1980)
Red 81 auto turbo 301 T/A - sold (1983)
Blue 70 4sp T/A -got stolen, recovered, got a wife sold the car, big mistake (1984)
White 79 4sp 400 T/A - 12 year project so far,  wanna drive it so bad... -   (bought in 2000)
Brooklyn NY, tough town...

kboehringer

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Re: SUBFRAME MEASUREMENTS
« Reply #6 on: November 16, 2008, 12:41:09 PM »
where'd your friend get that from? That doesn't show anywhere on my '78 or '79 Service Manual

It can be found in a "FISHER BODY SERVICE MANUAL" not the standard service manual.    Each Fisher manual covers many vehicles (basically ALL body styles - Pontiac, Cheby, Olds, Cadillac, etc.) but does not provide any driveline information (motor, trans, etc.).  There is great deal of information in a Fisher Manual; doors, ductwork, seals, wiring (routing only) etc.



I have the pages your looking at in .pdf format.  I sent them to another TAC guy a few months back.  If you want them send me an e-mail & I'll forward them.

The Fisher Manuals are on e-bay all the time and normally don't fetch too many $$.  I think I paid $10 for mine.   They really have a lot of great information you can't find in the service manual.

Kurt

hot72rod

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Re: SUBFRAME MEASUREMENTS
« Reply #7 on: March 10, 2009, 06:55:49 PM »
If it would help I could get the measurements off of a bare 72 camaro frame that I have in the shop.
Robert

73 Formula, LS6.0, 4L60e trans, Moser 12 bolt with 3:42 gears, full PTFB GT suspension.

71 RS/SS, 350 SBC back by a BW 4 speed

painkiller

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Re: SUBFRAME MEASUREMENTS
« Reply #8 on: June 29, 2015, 04:13:29 PM »
How do these measurement differ for a 70-74 subframe?

hot72rod

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Re: SUBFRAME MEASUREMENTS
« Reply #9 on: June 29, 2015, 05:58:54 PM »
The later frames are wider in the back. The later frames also have different rear mounting locations.
Robert

73 Formula, LS6.0, 4L60e trans, Moser 12 bolt with 3:42 gears, full PTFB GT suspension.

71 RS/SS, 350 SBC back by a BW 4 speed

NOT A TA

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Re: SUBFRAME MEASUREMENTS
« Reply #10 on: June 29, 2015, 07:12:55 PM »
I posted some of the measurements for early frames here. http://transamcountry.com/community/index.php?topic=68213.msg650790#msg650790
John Paige
Lab-14.com

72fmula

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Re: SUBFRAME MEASUREMENTS
« Reply #11 on: October 11, 2017, 08:12:46 AM »
« Last Edit: October 12, 2017, 08:13:16 AM by LeighP »

Re: SUBFRAME MEASUREMENTS
« Reply #11 on: October 11, 2017, 08:12:46 AM »
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