Frame swap questions - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Spray-Bomb · 01-18-2010, 08:39 PM

Hey guys, I have a question about swapping frames

I have a 67 chevy that I Z'd the rear & cupped my LCAs
Thing is I just dont like how it turned out
I also have a bagged 89 & they are MUCH easier to make lay frame

I can get my hands on a 88-98 frame for basically free (complete minus rear axle)

I know that the 88-98 frames are about 11" wider because the fuel tanks are on the inside of the frame

But does anyone know if there is a difference in track width ?
Im not worried about wheel base differences, as its easy to shorten or lengthen a frame (to me anyway)

And I know all the body mounts have to be moved to the inside of the frame
My main concern is the track width as that is hard to change on the front

I would just measure the difference myself, but I dont have the front suspension on my 89

I know a guy that swapped his 67 on a 4x4 88-98 frame, but track width isnt such a concern on a 4x4

Thanks, Matt

OARNGESI · 01-19-2010, 03:39 AM

I know the rearends are the same width not sure on the front though

**N2TRUX** · 01-19-2010, 10:10 AM

Quote:

Originally Posted by OARNGESI

I know the rearends are the same width not sure on the front though

Are you sure about that? I thought the 88-98 rear axle was wider.

willie 64 · 01-19-2010, 08:36 PM

I am doing a frame swap with a 64 c-20 cab on a 88 c-1500 frame. i could measure the track witdth on my truck. do i measure from inside to inside of tire or center of tire? also when you lowered your 89 truck how did you lower the rear suspension? i allready channeled the cab 5 inches.

aggie91 · 01-20-2010, 05:53 PM

I would guess that the best way to measure track with is from the wheel mounting flange of the rotor to the wheel mounting flange of the opposite rotor. I say this because of rim width and back spacing, different set ups would net different dimensions to the center of the tire or even to the inside of the rims lip.

Spray-Bomb · 01-20-2010, 10:05 PM

The 89 is on bags & lays frame, so it has a step notch in the rear

I just need the measurement form hub face to hub face, then I can measure my 67 when I get a chance

Spray-Bomb · 01-20-2010, 10:07 PM

Quote:

Originally Posted by N2TRUX

Are you sure about that? I thought the 88-98 rear axle was wider.

IIRC flange to flange on my 90 rear end was around 64"

What is it on a 67-72 ?
I know 71-72's are about 1-3/4" wider than the earlier ones

Spray-Bomb · 01-24-2010, 01:28 AM

Bump

01-18-2010, 08:39 PM	#1
Spray-Bomb Texas Big Wig Join Date: Jan 2007 Location: Mineola, Texas Posts: 5,620	Frame swap questions Hey guys, I have a question about swapping frames I have a 67 chevy that I Z'd the rear & cupped my LCAs Thing is I just dont like how it turned out I also have a bagged 89 & they are MUCH easier to make lay frame I can get my hands on a 88-98 frame for basically free (complete minus rear axle) I know that the 88-98 frames are about 11" wider because the fuel tanks are on the inside of the frame But does anyone know if there is a difference in track width ? Im not worried about wheel base differences, as its easy to shorten or lengthen a frame (to me anyway) And I know all the body mounts have to be moved to the inside of the frame My main concern is the track width as that is hard to change on the front I would just measure the difference myself, but I dont have the front suspension on my 89 I know a guy that swapped his 67 on a 4x4 88-98 frame, but track width isnt such a concern on a 4x4 Thanks, Matt __________________ Just not low enough... ----------------------------- Sinister Killer

01-19-2010, 03:39 AM	#2
OARNGESI Registered User Join Date: Sep 2008 Location: CASA GRANDE AZ Posts: 4,276	Re: Frame swap questions I know the rearends are the same width not sure on the front though __________________ 70 SWB STEPSIDE 70 BLAZER 09 challenger

01-19-2010, 08:36 PM	#4
willie 64 Registered User Join Date: Sep 2009 Location: riverdale nj Posts: 23	Re: Frame swap questions I am doing a frame swap with a 64 c-20 cab on a 88 c-1500 frame. i could measure the track witdth on my truck. do i measure from inside to inside of tire or center of tire? also when you lowered your 89 truck how did you lower the rear suspension? i allready channeled the cab 5 inches.

01-20-2010, 05:53 PM	#5
aggie91 I'm just glad to be here! Join Date: Jan 2008 Location: Longview, TX Posts: 4,788	Re: Frame swap questions I would guess that the best way to measure track with is from the wheel mounting flange of the rotor to the wheel mounting flange of the opposite rotor. I say this because of rim width and back spacing, different set ups would net different dimensions to the center of the tire or even to the inside of the rims lip. __________________ Karl 1965 Chevy Stepside(Grandpa's Old Blue) and (July 2015 Shop Build!)(2020, the Saga Continues) http://67-72chevytrucks.com/vboard/s...d.php?t=372424 The LST Challenge: http://67-72chevytrucks.com/vboard/s...=1#post7812257 Korbin's 1st Square: "Sunburn" http://67-72chevytrucks.com/vboard/s...d.php?t=418618 1985 GMC Sierra: "White Trash", Korbin's 2nd now... http://67-72chevytrucks.com/vboard/s...d.php?t=632305 Henry - 1984 Chevrolet, Owen's 1st Square

01-20-2010, 10:05 PM	#6
Spray-Bomb Texas Big Wig Join Date: Jan 2007 Location: Mineola, Texas Posts: 5,620	Re: Frame swap questions The 89 is on bags & lays frame, so it has a step notch in the rear I just need the measurement form hub face to hub face, then I can measure my 67 when I get a chance __________________ Just not low enough... ----------------------------- Sinister Killer Last edited by Spray-Bomb; 01-20-2010 at 10:08 PM.

01-24-2010, 01:28 AM	#8
Spray-Bomb Texas Big Wig Join Date: Jan 2007 Location: Mineola, Texas Posts: 5,620	Re: Frame swap questions Bump __________________ Just not low enough... ----------------------------- Sinister Killer



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