70 swb question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

steves1967 · 11-11-2007, 01:40 AM

My buddy has a 70 swb GMC with leaf springs in the rear. I thought all the early trucks had coil springs? All the brackets and mounts appear factory installed. It was originally a 6 cyl, but has a 350 now.

So did GM make leaf spring trucks in 70?

Thanks!!

C10-Driver · 11-11-2007, 02:34 AM

Most are coil but there are quite a few leaf spring trucks. I have a '70 Chev with rear leafs.

77player · 11-11-2007, 02:41 AM

99% of gmc are leaf chevys were coils

chevy72blu · 11-11-2007, 06:33 AM

as I understood it, the half ton chevy's all got springs while the 3/4 tons got leafs. Is that not true?

Dingfodgy · 11-11-2007, 12:32 PM

Quote:

Originally Posted by chevy72blu

as I understood it, the half ton chevy's all got springs while the 3/4 tons got leafs. Is that not true?

This is typically what you'll find out there on the street and at the farms, but the fact of the matter is that coil springs were standard on the 1/2 ton chevys, but leafs could be had as an option. With the GMC's leafs were the standard while coils could be ordered. Also with the coil sprung trucks you could add a pair of auxillary 1/2 leafs which made up the Heavy Duty option.
Now 3/4 tons I'm not sure what was standard, optional or what not, but leafs feel right for the standard configuration with coils being optional. I don't even know if there is such a thing as 3/4 ton coil springs???

Sinister · 11-11-2007, 01:32 PM

I had a '72 3/4 ton C-20 with leaf springs, and now have a '69 C-20 that has coil springs and half leaf helper springs...

kaycee · 11-11-2007, 02:26 PM

I had a 69 swb Chevy that was leaf spring and it was purchased that way from the dealer.A lot of the chevys were coil spring but not all of them the same goes for the small back window some will say that 67 were the only 1 that had them but there r some 68 that got them allso.I could go on and on but

**raggedjim** · 11-11-2007, 02:31 PM

I have an original 1971 GMC with coils also. GM would build just about anything you wanted back then...

Rg

northerngmc · 11-11-2007, 04:14 PM

Quote:

Originally Posted by 77player

99% of gmc are leaf chevys were coils

HUMMMMM

My 69 GMC is coil, and my 72 GMC parts truck is coil as well. Both half tons.

My 70 GMC 3/4 ton parts truck is leaf.

Longhorn Man · 11-11-2007, 04:36 PM

ok... the 1/2 leafs were not an HD option, they were simply overload springs.
There was no HD option... just HD parts.
67 - 72 chevy, bit 10 and 20 series, came with coils, and leafs were optional.
GMCs, in 69, coils were standard in 1/2 ton... I believe all other GMCs, 1500 and 2500's, 67 - 72 (other than the 69 C/1500) were leaf.

northerngmc · 11-11-2007, 07:04 PM

As stated above my 72 GMC 1/2 ton has coils!

11-11-2007, 01:40 AM	#1
steves1967 Registered User Join Date: Dec 2001 Location: Manteca, Ca USA Posts: 304	70 swb question My buddy has a 70 swb GMC with leaf springs in the rear. I thought all the early trucks had coil springs? All the brackets and mounts appear factory installed. It was originally a 6 cyl, but has a 350 now. So did GM make leaf spring trucks in 70? Thanks!! __________________ '71 Chevy 3/4 Ton Longbed '22 Chevy Tahoe RST '67 Firebird- 8 sec street car '24 GMC CC 4x4 Duramax Dually

11-11-2007, 02:34 AM	#2
C10-Driver Chevy Truck Addict Join Date: Aug 2006 Location: Kelowna, BC Posts: 1,176	Re: 70 swb question Most are coil but there are quite a few leaf spring trucks. I have a '70 Chev with rear leafs. __________________ . 1970 Chev C/10 SWB, 355 SBC, 700R4, 3.73 Posi, Air Ride (Click to view Build Thread) (SOLD) 1978 Chevy C/10 SWB 1970 Pontiac Lemans .

11-11-2007, 02:41 AM	#3
77player Registered User Join Date: Jan 2006 Location: washington Posts: 2	Re: 70 swb question 99% of gmc are leaf chevys were coils

11-11-2007, 06:33 AM	#4
chevy72blu Registered User Join Date: Apr 2004 Location: Las Vegas, NV Posts: 2,188	Re: 70 swb question as I understood it, the half ton chevy's all got springs while the 3/4 tons got leafs. Is that not true? __________________ RIP EastSideLowLife '72 C20 SWB convert. 5 lug, LS1/4l60e

11-11-2007, 01:32 PM	#6
Sinister Between Trucks... Join Date: Mar 2002 Location: Los Angeles, CA. Posts: 3,830	Re: 70 swb question I had a '72 3/4 ton C-20 with leaf springs, and now have a '69 C-20 that has coil springs and half leaf helper springs... __________________ Beat it to fit, Paint it to match...

11-11-2007, 02:26 PM	#7
kaycee Registered User Join Date: Jan 2000 Location: Wyoming USA Posts: 2,445	Re: 70 swb question I had a 69 swb Chevy that was leaf spring and it was purchased that way from the dealer.A lot of the chevys were coil spring but not all of them the same goes for the small back window some will say that 67 were the only 1 that had them but there r some 68 that got them allso.I could go on and on but __________________ 2001 Silverado K-1500 2005 FXDWG stage3 69 CHEVY Short/Step 327/4L60 373 posi 63 IMPALA 327

11-11-2007, 02:31 PM	#8
raggedjim Senior Member Join Date: Jun 2002 Location: Murray, Kentucky Posts: 3,453	Re: 70 swb question I have an original 1971 GMC with coils also. GM would build just about anything you wanted back then... Rg __________________ Roger '68 Short step - https://67-72chevytrucks.com/vboard/...d.php?t=849675 '69 ('70?) 2wd Blazer '70 GMC Jimmy 2wd '73 Firebird - https://67-72chevytrucks.com/vboard/...d.php?t=853203

11-11-2007, 04:36 PM	#10
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: 70 swb question ok... the 1/2 leafs were not an HD option, they were simply overload springs. There was no HD option... just HD parts. 67 - 72 chevy, bit 10 and 20 series, came with coils, and leafs were optional. GMCs, in 69, coils were standard in 1/2 ton... I believe all other GMCs, 1500 and 2500's, 67 - 72 (other than the 69 C/1500) were leaf.

11-11-2007, 07:04 PM	#11
northerngmc Registered User Join Date: Jan 2004 Location: Whitehorse YK Canada Posts: 2,651	Re: 70 swb question As stated above my 72 GMC 1/2 ton has coils! __________________ Blaine 59 GMC 9314 a.k.a. Whoopee 68 C20 50th Anniversary a.k.a. The Rat http://www.flickr.com/photos/northerngmc/ http://www.members.tripod.com/P-wee/index_032.htm 1.61803 is one H of a lot better than 3.14159, no really it is!



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