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Author Topic:   caprice question
Speedway65
Dirt Freak

Total posts: 344
posted September 13, 2005 08:36 AM  
Does anybody know the wheelbase of a 80-82 caprice or impala?And what do you think of shortening one down to 108 and putting a metric body on it.What are the pros and cons of the front and rear suspensions?

strobe
Dirt Roller

Total posts: 23
posted September 13, 2005 09:49 AM  
I'm 99.9% sure the wheel base is 116". I myself like a longer wheelbase than a shorter one. i.e. a malibu.

CLBaker25
Dirt Maniac

Total posts: 193
posted September 13, 2005 11:02 AM  
I think that is the same frame they build JET mods out of so I think that it has good front end design, but I don't really know for sure.

racer17j
Dirt Forum Champ
Total posts: 5390
posted September 13, 2005 07:37 PM  
Also I think that if you were building a frame that you had to cut down you could turn the stubb. This would be a huge advantage and is one of the things that all of the big car builders are doing now on mods.

Speedway65
Dirt Freak

Total posts: 344
posted September 14, 2005 06:06 AM  
Turn the stub? Go on CL.

eborcim
Dirt Freak

Total posts: 303
posted September 14, 2005 09:17 AM  
this sounds like a fun project...Does a Caprice front stub match a 'small' metric back half without much problem? What about the rear suspension...If it's a stock 4 link type you could easily take a few inches out of the middle of the frame where you X it and plate over the cuts.

CLBaker25
Dirt Maniac

Total posts: 193
posted September 14, 2005 09:24 AM  
I have heard that you can turn the front stub on a car and then you ensure that the rear of the car matches so your wheel base is what it is supposed to be. This makes both the front and rear end are pointed towards the in feild making the car turn much better and be much faster. I have heard that alot of the top chassis manufacturers are using. I have heard that turning the stub is not hard once you cut the frame rales.

eborcim
Dirt Freak

Total posts: 303
posted September 14, 2005 09:53 AM  
So the frame rails will not be parallel but still be the required wheelbase on each side...interesting...sorta like built-in crab steering. How much are they turning these frames in? Half inch? You would really have to start with a squared front and rear frame and brace it before you cut right?

robhbk24
Dirt Freak

Total posts: 372
posted September 14, 2005 02:06 PM  
while you're on the subject of cutting things down i am starting next years car right now another metric yes but i'm taking advantage of the wheelbase rule and i cut it down to 101 with the pass side being 1/8th inch longer. before i get to invloved would i maybe be better off using the big metric and cutting that down. i like the shorter wheelbase

racer038
Dirt Maniac

Total posts: 111
posted September 14, 2005 02:56 PM  
Been there. Done that. '77 Caddy Deville, cut to 109". Dropped a '84 Buick Regal on it. I don't recommend this unless you're really good with sheet metal. Hanging the body and floorpan was a pain. The width is a problem and the floor pan has to be cut out and patched up. A fresh roll cage must be put in it, a full size roll cage won't go in the metric body, unless you can fabricate you own front firewall, which we couldn't. Good luck.

robhbk24
Dirt Freak

Total posts: 372
posted September 14, 2005 04:18 PM  
on my end i don't have to have a complete floorpan only driver side and that doesn't have to be stock, the firewall can be fabbed and moved my seat in this car will be about 12 inches from the rear crossmemeber to the back of the seat. offset cage like in my current car. the big thing for me is trying to get rear percent as high as poss witout having to add weight. i fig the shorter the wheelbase (our rule is 98) the more the weight will be towards the rear. the motor will be set back so that the #1 plug is just behind the ball joint. i have already redrilled all the rear control arm mounts shortened the frame, boxed in the frame rails and removed large sections of uneeded frame behind the rear cross member and i'm about ready to buy tube to fab the new tube frame.i guess i'm tech building and imca style mod just with the motor in stock location, a shorter wheelbase and a more offset cage the plan is to build a sprint or ne style mod cage with the bulk of it being to the left of the driveshaft.i already have a mental pic of what i want to do and how it will look i was just wondering about the caprice deal.would that be better? i wanna change the front a-arm mounts (*uppers) on the new chassis to get better geometery. am i correct in that i think i need to lower them straighten them and set them back slightly?any ideas. sorry to jump in this thread

robhbk24
Dirt Freak

Total posts: 372
posted September 14, 2005 04:22 PM  
correction the cage will be more offset than my current car being that my current car the cage is straight back on the pass side off the front stub mounted to 2X3. and what do you'all think about using round tube instead of box for weight purposes? this is for a central new york pure stock. sad to say it but this is where we have gotten to for our "beginner class".

racer17j
Dirt Forum Champ
Total posts: 5390
posted September 14, 2005 07:12 PM  
I have heard that people are turning the front stub at least an inch but not more than two inches. So somewhere in there would be good.

robhbk24
Dirt Freak

Total posts: 372
posted September 15, 2005 01:55 PM  
thanks or the 2cenats 17, i was thinking the same thing with the cage i fig out a way to brace everything underneath the tub and still make the pass side lite and strong but the ideas get carried away sometimes.i'm tryin to do everything i wanted to do before on my last chassis and my dads but didn't, to my new one. seems like everytime i get something done i find like 6 ways i coulda done it lighter and stronger and better i'm forever changing my mind on how things should go. gonna look around before i get to more invloved a see if i can scrounge up big metric. are the mid 90s caprices the same as the mid 80s just with a different body?

Speedway65
Dirt Freak

Total posts: 344
posted September 15, 2005 02:00 PM  
I think they are 115" wb 91 and up and all of the 77-90 are 116 wb.Don't know whether all of the suspensions are the same or not.Like i started on this thread i'm stll toying with the idea of this kind of car so right know i'm in the info gathering mode still.

CLBaker25
Dirt Maniac

Total posts: 193
posted September 15, 2005 02:19 PM  
If you do this let us know how much you turned the stub and how big of a difference it makes when it is run.

racer17j
Dirt Forum Champ
Total posts: 5390
posted September 15, 2005 03:50 PM  
we have moved stubs before but it was on novas. it worked prertty good but we didn't connect the frames so we could move it if we didn't like it

    

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