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Old 10-23-2009, 06:05 AM   #1
ClifBlazer
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cut truck frame for blazer/jimmy mode?

looking for thread new or old that shows where you cut frame on swb truck frame to put blazer tub on I know its behind cab and in frount of rear end.Are there differant trailing arms for 2wd blazer/jimmys or does crossmember move to get the lenght right
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Old 10-23-2009, 08:41 AM   #2
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Re: cut truck frame for blazer/jimmy mode?

Didn't know there was that option, subscribed.
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Old 10-23-2009, 08:52 AM   #3
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Re: cut truck frame for blazer/jimmy mode?

I`ve never heard of anyone doing this,so prolly no thread.You are taking a coil rear 2wd SWB frame and shortening for 2wd Blazer?The crossmember would be in the same place for any coil rear...long,short,K/5.mostly I see 4wd to 2wd k/5 conversions I guess because it`s easier.If it was me,I`d start with a LWB frame since so many seek SWB frames and even shorten the most abundant LWBs.A truck frame will need the frame cut behind the axle also,as well as modified frame tails for bumper mounting.
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Old 10-23-2009, 10:42 AM   #4
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Re: cut truck frame for blazer/jimmy mode?

I agree with special-k here in MO. lwb frames I believe are plentyful where as swb frames are not, IMO: sell the swb frame and pick up a lwb frame for nearly nothing you"ll have money left over for parts. Good luck
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Old 10-23-2009, 10:45 AM   #5
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Re: cut truck frame for blazer/jimmy mode?

Almost forgot I have a lwb frame that was made into a trailer, that I believe was cut under the cab that you could have if you picked it up.
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Old 10-23-2009, 12:10 PM   #6
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Re: cut truck frame for blazer/jimmy mode?

Do you still have the original 4x4 blazer frame?
I would use that with a 73-87 crossmember installed.
Easy change to 5-lug and quick way to get disc brakes.
Also the frame body mounts won't have to be moved.
The only fabbing will be adding the trailing arm crossmember(and trailing arms),... and some upper shock mounts.
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Old 10-23-2009, 03:31 PM   #7
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Re: cut truck frame for blazer/jimmy mode?

I got just the jimmy tub with top and a 67-68 hood some other junk I haven't gone threw yet. As far as lwb frame? I all ready had this swb truck and I have a 4wd blazer thats all origanal I am the sec.owner so not wanting to screw it up
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Old 10-23-2009, 09:08 PM   #8
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Re: cut truck frame for blazer/jimmy mode?

I think c10king has a blazer on a cut down truck frame and i think i seen a thread were ebfabman did one maybe you can pm one of them
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Old 10-24-2009, 04:43 AM   #9
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Re: cut truck frame for blazer/jimmy mode?

thanks for info c10 king couldn't find but did e mail fabman see what he has to say
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Old 10-25-2009, 12:18 PM   #10
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Re: cut truck frame for blazer/jimmy mode?

Hey Clif, sorry I missed this thread. Making a 2wd blazer frame is the same as making a swb from a lwb frame, just more material taken from under the cab. The trailing arms are all the same. I have an unedited video of this I will try to dig out and post for you but its pretty straight forward.
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Old 10-25-2009, 06:43 PM   #11
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Re: cut truck frame for blazer/jimmy mode?

Quote:
Originally Posted by ebfabman View Post
Hey Clif, sorry I missed this thread. Making a 2wd blazer frame is the same as making a swb from a lwb frame, just more material taken from under the cab. The trailing arms are all the same. I have an unedited video of this I will try to dig out and post for you but its pretty straight forward.

Could be wrong but as I understood his post, he's trying to shorten a swb 2wd truck frame and use it for his blazer tub.
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Old 10-25-2009, 07:54 PM   #12
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Re: cut truck frame for blazer/jimmy mode?

Your right VT I am but after you all given me food for thought I all ready have a hole blazer 4wd not shore witch one to do put a question up on my build witch of three I should do?
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Old 10-25-2009, 09:48 PM   #13
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Re: cut truck frame for blazer/jimmy mode?

To make a 2wd blazer frame from a 2wd swb frame you will need to remove 11 inches from under the cab. The differences in lengths between 2wd swb, lwb, and blazer frames are all between the front cab mounts and the trailing arm crossmember.
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Old 10-25-2009, 09:55 PM   #14
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Re: cut truck frame for blazer/jimmy mode?

heres a pic. of the swb. so as long as you keep frount mounts cut 11'' out and will the other mounts line up or will they all have to be moved.
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Last edited by ClifBlazer; 10-25-2009 at 10:02 PM. Reason: ebfabman responds
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Old 10-25-2009, 10:01 PM   #15
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Re: cut truck frame for blazer/jimmy mode?

This is of course the difference in wheelbase length. The frame for the rear bumper mounting will need to be shortened a little. There likely will be another set of holes for the bumper already in the frame so you will be able to see how much of the rear frame needs to be removed. I know this is the case with lwb frames, maybe swb also.
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Old 10-26-2009, 08:00 AM   #16
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Re: cut truck frame for blazer/jimmy mode?

Still doesn't sound right, aren't the frames completely different between the two?

Isn't the truck frame flatter & the blazer frame is more humped past the cab mounts?

Anybody have some better side shots of the two frames?

These are the only ones I have.
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Old 10-26-2009, 08:43 AM   #17
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Re: cut truck frame for blazer/jimmy mode?

It probably doesn't sound right to you if you're trying to compare Leaf spring and coil spring frames. They are different.

I've cut down several 2wd coil frames for both swb trucks and 2wd blazers. You will need to use the blazer mounts on the shortened frame to mount the tub. I would not comment or try to mislead if I wasn't sure about the subject.

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Old 10-26-2009, 09:13 AM   #18
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Re: cut truck frame for blazer/jimmy mode?

Quote:
Originally Posted by ebfabman View Post
I would not comment or try to mislead if I wasn't sure about the subject.


Not trying to say you would, sorry if you took it that way, only trying to understand here.

I'm reffering strickly to the 'frame shape' between the two, are they exactly the same...in shape, the frames themselves?

The rise in the frames look different in the back, this area hasn't been defined as of yet in this thread, just want it to be clear.
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Old 10-26-2009, 12:55 PM   #19
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Re: cut truck frame for blazer/jimmy mode?

Quote:
Originally Posted by ebfabman View Post
It probably doesn't sound right to you if you're trying to compare Leaf spring and coil spring frames. They are different.

I've cut down several 2wd coil frames for both swb trucks and 2wd blazers. You will need to use the blazer mounts on the shortened frame to mount the tub. I would not comment or try to mislead if I wasn't sure about the subject.

eb...out
That's the other problem,... he only has the tub itself.
No old frame to rob some mounts off of.
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Old 10-26-2009, 01:56 PM   #20
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Re: cut truck frame for blazer/jimmy mode?

fabrication
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Old 10-26-2009, 07:27 PM   #21
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Re: cut truck frame for blazer/jimmy mode?

indeed fab is what im seeing in the future. what it sounds like is blazer frame 2wd or4wd is the best way to go . this swb frame is alot more work to modified than I was thinking or so it seams to me at this point cause VT &lolife are more intelligent than the average guy about blazers and fabman has done this a few times. tell me what you would do. take 4wd frame make it the 2wd or not. I think swb is going to stay that way just wait tell I find a good bed for now maybe
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Old 10-26-2009, 07:32 PM   #22
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Re: cut truck frame for blazer/jimmy mode?

heres 4wd I all ready have but its a 1 owner that I picked up in 99
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Old 10-26-2009, 09:17 PM   #23
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Re: cut truck frame for blazer/jimmy mode?

do you want leaf spring or coil spring suspension? do you want to go lifted, lowered, or stock height?
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Old 10-26-2009, 11:25 PM   #24
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Re: cut truck frame for blazer/jimmy mode?

I would like to have the coil springs .you can set them up lower like 4 to6 inch. right
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Old 11-05-2009, 07:15 PM   #25
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Re: cut truck frame for blazer/jimmy mode?

well cutting this short bed anit happen so Im gona look for a fleet side bed and put it back as a truck and weight for a good lwb to be found
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