Calling all 4/6 drop trucks - The 1947 - Present Chevrolet & GMC Truck Message Board Network

bcj67chevy · 03-25-2008, 09:17 PM

I'm getting ready to design my tube frame for my 67, adding c4 front suspension and a 4 link. need help with a coulple of measurements so that i can set my frame ride heigth.

How far is the bottom of your frame off the ground and what size tire do you have?

Also you roll pan guys. Whats the measurement from the bottom of the frame rail to the top edge and the lower edge of the roll pan?

Thanks everyone in advance,
Bryan

bcj67chevy · 03-26-2008, 06:56 AM

Anybody???

see ten · 03-26-2008, 01:52 PM

My truck has a 3.5"/6" drop. This is some info I PMed to another member about the height. It may or may not help you.

I measured from the center of the wheel to the lip of the fender. I thought this would alleviate any tire size/height issues between your vehicle and mine. At ride height I have 14.5". I jacked up the truck to the point that the tires were moving (inward?) and seemed about to come off the ground and got 18.5". A couple more strokes of the jack got the tire off the ground and the tape read 19.25". All these are approximate. I was using a tape and eyeballin it all as best I could. It's possible things could be a smidge one way or the other. I also made some ride height measurements from the truck to the ground. The center of the front bumper 8.25". The center of the first frame xmember from the front 9". The center of the engine/suspension x member 5.25". Again no gauges were used, just a tape and my eyes.

bcj67chevy · 03-26-2008, 09:20 PM

Thanks a lot for the info see ten. how close to level is the lower staight part of the frame?

My truck is in pieces right now so i cant really measure by the center of the wheel and the fender. and im designing the frame on SDS/2 so i just need from the bottom of the frame to the ground with the tire size.

Thanks a lot for all the help..

1LoC10 · 03-26-2008, 09:22 PM

If your building a frame and 4 link, jsut set it up to where you want it to be

bcj67chevy · 03-27-2008, 02:20 AM

I want it to end up being just a bit lower that a truck with a 4/6 drop, so this will give me a good place to start.
Thanks, guys

see ten · 03-27-2008, 05:00 AM

Hmmm,

I'm about this level.

Sorry, it's hard to say without knowing if I've got it parked somewhere level.

bcj67chevy · 03-27-2008, 05:33 AM

see ten, That is just about how i want my truck to sit.
What size tires are you running?
Can you measure how far your frame is off the ground on concrete, could be measured from even right after the front wheel where the frame staightens out.

Thanks a lot in advance.

Quote:

Originally Posted by see ten

Hmmm,

I'm about this level.

Sorry, it's hard to say without knowing if I've got it parked somewhere level.

see ten · 03-27-2008, 05:51 AM

The rears are 275/50-17 and the fronts are 255/50-17. I can take a meaurement for you but it's going to be tomorrow.

bcj67chevy · 03-27-2008, 06:06 AM

Thanks see ten your the man

see ten · 03-27-2008, 11:57 PM

Ok, Under the frame at the front of the front cab mount is 7.5" to the concrete. Under the frame at the rear of the rear cab mount is 9" to the concrete.

**John Fabris** · 03-28-2008, 12:37 AM

My truck is a 4/6 truck with 265-70-15 tires, let me know if you need more mesurements (other then 'see ten's)

bcj67chevy · 03-28-2008, 03:19 AM

Thanks see ten for the information, i really appricate it.

John fabris , it would be cool to have more just so that i can see the difference, nice to to have the same size tires front and rear, also.

Thanks a lot guys.

Ol'Rover · 03-28-2008, 03:19 AM

this link might help:

http://67-72chevytrucks.com/vboard/s...d.php?t=276088

'67Nate · 03-28-2008, 08:26 AM

To answer the roll pan question; The top of the pan is flush with the top of the frame and the bottom is 2" bellow the bottom of the frame. The total thickness of the back of my pan is 5" (making the frame rails aprox. 3"). Hope this is what you were asking for.

bcj67chevy · 03-28-2008, 03:05 PM

'67Nate, that is exactly what i needed, you are the man, thanks a lot.

**John Fabris** · 03-28-2008, 07:40 PM

Here is what I got. My truck is a 4/6 drop kit from ECE (via dropped spindles and springs). My tires are 265/50/15s front and rear.

Starting from the front and working back, bottom of the frame horn (very front) to ground is 7-1/4 inches. Bottom of the frame (under front cab mount) to ground is 5-3/4 inches. Bottome of the frame (under rear cab mount) to ground is 7 inches. Bottom of the frame (end of frame under tailgate) to ground is 15 inches.

Also, ground to bottom middle of front wheelwell is 26 inches, rear wheelwell is 27 inches.

bcj67chevy · 03-28-2008, 09:30 PM

Thanks John Fabris, i really appricate the measurements, it's exactly what i needed.

Thanks guys

bcj67chevy · 03-29-2008, 03:10 PM

Hey John Fabris, Do you happen to know what your tire diameter is? I thought it would be close to 29, but with the wheelwell dimension being 26 im not sure.
Thanks

Orange · 03-29-2008, 06:48 PM

Quote:

Originally Posted by bcj67chevy

Hey John Fabris, Do you happen to know what your tire diameter is? I thought it would be close to 29, but with the wheelwell dimension being 26 im not sure.
Thanks

Best web site I ever bookmarked.
http://www.miata.net/garage/tirecalc.html
Probably.

DLB

bcj67chevy · 03-29-2008, 07:08 PM

Thanks Orange, that answered my question it's 25.4 in.

**John Fabris** · 03-29-2008, 07:09 PM

Yup, that is pretty close. I had thought it was around 25 inches...

03-25-2008, 09:17 PM	#1
bcj67chevy 402 BIG BLOCK Join Date: Mar 2006 Location: McClelland IA Posts: 286	Calling all 4/6 drop trucks I'm getting ready to design my tube frame for my 67, adding c4 front suspension and a 4 link. need help with a coulple of measurements so that i can set my frame ride heigth. How far is the bottom of your frame off the ground and what size tire do you have? Also you roll pan guys. Whats the measurement from the bottom of the frame rail to the top edge and the lower edge of the roll pan? Thanks everyone in advance, Bryan __________________ 1967 C10 swb 1970 GMC Jimmy 4x4 2005 Chevy tahoe Z71 2001 Chevy impala

03-26-2008, 06:56 AM	#2
bcj67chevy 402 BIG BLOCK Join Date: Mar 2006 Location: McClelland IA Posts: 286	Re: Calling all 4/6 drop trucks Anybody??? __________________ 1967 C10 swb 1970 GMC Jimmy 4x4 2005 Chevy tahoe Z71 2001 Chevy impala

03-26-2008, 01:52 PM	#3
see ten WTB this ad Join Date: Sep 2004 Location: Lafayette Georgia Posts: 5,074	Re: Calling all 4/6 drop trucks My truck has a 3.5"/6" drop. This is some info I PMed to another member about the height. It may or may not help you. I measured from the center of the wheel to the lip of the fender. I thought this would alleviate any tire size/height issues between your vehicle and mine. At ride height I have 14.5". I jacked up the truck to the point that the tires were moving (inward?) and seemed about to come off the ground and got 18.5". A couple more strokes of the jack got the tire off the ground and the tape read 19.25". All these are approximate. I was using a tape and eyeballin it all as best I could. It's possible things could be a smidge one way or the other. I also made some ride height measurements from the truck to the ground. The center of the front bumper 8.25". The center of the first frame xmember from the front 9". The center of the engine/suspension x member 5.25". Again no gauges were used, just a tape and my eyes.

03-26-2008, 09:20 PM	#4
bcj67chevy 402 BIG BLOCK Join Date: Mar 2006 Location: McClelland IA Posts: 286	Re: Calling all 4/6 drop trucks Thanks a lot for the info see ten. how close to level is the lower staight part of the frame? My truck is in pieces right now so i cant really measure by the center of the wheel and the fender. and im designing the frame on SDS/2 so i just need from the bottom of the frame to the ground with the tire size. Thanks a lot for all the help.. __________________ 1967 C10 swb 1970 GMC Jimmy 4x4 2005 Chevy tahoe Z71 2001 Chevy impala

03-26-2008, 09:22 PM	#5
1LoC10 Insert Title Here Join Date: Feb 2006 Location: Dyer, Indiana Posts: 5,679	Re: Calling all 4/6 drop trucks If your building a frame and 4 link, jsut set it up to where you want it to be __________________ BOBBY _69 SWB_ 1000 pics of 67-72's>> http://s193.photobucket.com/albums/z...-72/?start=all <<

03-27-2008, 02:20 AM	#6
bcj67chevy 402 BIG BLOCK Join Date: Mar 2006 Location: McClelland IA Posts: 286	Re: Calling all 4/6 drop trucks I want it to end up being just a bit lower that a truck with a 4/6 drop, so this will give me a good place to start. Thanks, guys __________________ 1967 C10 swb 1970 GMC Jimmy 4x4 2005 Chevy tahoe Z71 2001 Chevy impala

03-27-2008, 05:00 AM	#7
see ten WTB this ad Join Date: Sep 2004 Location: Lafayette Georgia Posts: 5,074	Re: Calling all 4/6 drop trucks Hmmm, I'm about this level. Sorry, it's hard to say without knowing if I've got it parked somewhere level.

03-27-2008, 05:51 AM	#9
see ten WTB this ad Join Date: Sep 2004 Location: Lafayette Georgia Posts: 5,074	Re: Calling all 4/6 drop trucks The rears are 275/50-17 and the fronts are 255/50-17. I can take a meaurement for you but it's going to be tomorrow.

03-27-2008, 06:06 AM	#10
bcj67chevy 402 BIG BLOCK Join Date: Mar 2006 Location: McClelland IA Posts: 286	Re: Calling all 4/6 drop trucks Thanks see ten your the man __________________ 1967 C10 swb 1970 GMC Jimmy 4x4 2005 Chevy tahoe Z71 2001 Chevy impala

03-27-2008, 11:57 PM	#11
see ten WTB this ad Join Date: Sep 2004 Location: Lafayette Georgia Posts: 5,074	Re: Calling all 4/6 drop trucks Ok, Under the frame at the front of the front cab mount is 7.5" to the concrete. Under the frame at the rear of the rear cab mount is 9" to the concrete.

03-28-2008, 12:37 AM	#12
John Fabris TOTY 2006 Join Date: Dec 1999 Location: Magalia CA USA Posts: 2,270	Re: Calling all 4/6 drop trucks My truck is a 4/6 truck with 265-70-15 tires, let me know if you need more mesurements (other then 'see ten's) __________________ John Fabris 67 C10 SWB

03-28-2008, 03:19 AM	#13
bcj67chevy 402 BIG BLOCK Join Date: Mar 2006 Location: McClelland IA Posts: 286	Re: Calling all 4/6 drop trucks Thanks see ten for the information, i really appricate it. John fabris , it would be cool to have more just so that i can see the difference, nice to to have the same size tires front and rear, also. Thanks a lot guys. __________________ 1967 C10 swb 1970 GMC Jimmy 4x4 2005 Chevy tahoe Z71 2001 Chevy impala

03-28-2008, 03:19 AM	#14
Ol'Rover Project: years too late. Join Date: Dec 2007 Location: Almonte,ON,Canada Posts: 550	Re: Calling all 4/6 drop trucks this link might help: http://67-72chevytrucks.com/vboard/s...d.php?t=276088 __________________ 1971 C10 Stepper LSX 5.3/4L60E 3.73 12bolt posi. Father Son Project. In Memory of Bruce C. Shorten. Rest easy Dad. Ill take it fryom here. Last edited by Ol'Rover; 03-28-2008 at 03:21 AM.

03-28-2008, 08:26 AM	#15
'67Nate Registered User Join Date: Jan 2007 Location: Nor-Cal Posts: 18	Re: Calling all 4/6 drop trucks To answer the roll pan question; The top of the pan is flush with the top of the frame and the bottom is 2" bellow the bottom of the frame. The total thickness of the back of my pan is 5" (making the frame rails aprox. 3"). Hope this is what you were asking for. __________________ If you can't drive safe... Drive fast.

03-28-2008, 03:05 PM	#16
bcj67chevy 402 BIG BLOCK Join Date: Mar 2006 Location: McClelland IA Posts: 286	Re: Calling all 4/6 drop trucks '67Nate, that is exactly what i needed, you are the man, thanks a lot. __________________ 1967 C10 swb 1970 GMC Jimmy 4x4 2005 Chevy tahoe Z71 2001 Chevy impala



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03-28-2008, 07:40 PM	#17
John Fabris TOTY 2006 Join Date: Dec 1999 Location: Magalia CA USA Posts: 2,270	Re: Calling all 4/6 drop trucks Here is what I got. My truck is a 4/6 drop kit from ECE (via dropped spindles and springs). My tires are 265/50/15s front and rear. Starting from the front and working back, bottom of the frame horn (very front) to ground is 7-1/4 inches. Bottom of the frame (under front cab mount) to ground is 5-3/4 inches. Bottome of the frame (under rear cab mount) to ground is 7 inches. Bottom of the frame (end of frame under tailgate) to ground is 15 inches. Also, ground to bottom middle of front wheelwell is 26 inches, rear wheelwell is 27 inches. __________________ John Fabris 67 C10 SWB

03-28-2008, 09:30 PM	#18
bcj67chevy 402 BIG BLOCK Join Date: Mar 2006 Location: McClelland IA Posts: 286	Re: Calling all 4/6 drop trucks Thanks John Fabris, i really appricate the measurements, it's exactly what i needed. Thanks guys __________________ 1967 C10 swb 1970 GMC Jimmy 4x4 2005 Chevy tahoe Z71 2001 Chevy impala

03-29-2008, 03:10 PM	#19
bcj67chevy 402 BIG BLOCK Join Date: Mar 2006 Location: McClelland IA Posts: 286	Re: Calling all 4/6 drop trucks Hey John Fabris, Do you happen to know what your tire diameter is? I thought it would be close to 29, but with the wheelwell dimension being 26 im not sure. Thanks __________________ 1967 C10 swb 1970 GMC Jimmy 4x4 2005 Chevy tahoe Z71 2001 Chevy impala

03-29-2008, 07:08 PM	#21
bcj67chevy 402 BIG BLOCK Join Date: Mar 2006 Location: McClelland IA Posts: 286	Re: Calling all 4/6 drop trucks Thanks Orange, that answered my question it's 25.4 in. __________________ 1967 C10 swb 1970 GMC Jimmy 4x4 2005 Chevy tahoe Z71 2001 Chevy impala

03-29-2008, 07:09 PM	#22
John Fabris TOTY 2006 Join Date: Dec 1999 Location: Magalia CA USA Posts: 2,270	Re: Calling all 4/6 drop trucks Yup, that is pretty close. I had thought it was around 25 inches... __________________ John Fabris 67 C10 SWB

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