View Full Version : 47 chevy questions...
SwitchBlade327
04-01-2004, 01:08 AM
might be picking up a couple since the project I was hoping to get dissapeared. wondering about engine swaps and whatnot. Got a fairly fresh 292 six that's got either a 350 or 400 auto behind it, what'll it take to stick that in place of the old six? Am I going to have to change rears too, and if so what's the available rears that fit? This is gonna be my first Chevy so I'm clueless for the most part. Any pics of some custom ones would be cool too...
chopolds
04-01-2004, 07:22 AM
I am finishing up a 46 with a 292. I put a Camaro sub up front, and I wound up having to 'raise' the depression in the firewall about 2 inches to clear the top of the engine. The camaro sub does make the engine sit a bit higher, but the 292 DOES have a taller block as well.
As for rear, you need to change to an open driveline. I think a Camaro/Nova rear is ideal. I used a late model Monte, and it is a bit too narrow, have to use reversed rims out back.
I can E-mail you pics if you like, I have quite a bit, on different things being done to the car, tell me what you're interested in!
Fat Hack
04-01-2004, 09:42 AM
Switchblade...go back about a year or so and dig through STREET RODDER mags...they featured an article about a company that makes mounts specifically for "modern" Chevy straight sixes (230,250,292) into 40-48 Chevy cars.
The mounts are a bolt-in deal.
Sorry, I don't have the issue myself, but somebody here will, and they can float you a name and address to contact for a set of these mounts.
SwitchBlade327
04-01-2004, 09:46 AM
i figured that's how the shit would be....Anyone got more info on what rears could be used, and what all you have to do in the swap??? Haven't had to deal with a closed driveline car before....
wayfarer
04-01-2004, 09:50 AM
We're building fleetmaster's '47 right now. He's got a 9" out of a '59 ford that fits pretty well and will allow him to get a decent sized tire in there. All you need is a rear the right width and some new spring pads.
Fat Hack
04-01-2004, 09:53 AM
Your typical Nova/Camaro 10-bolt rear axle should be nearly a bolt-in for ya. With a 292 motor and a TH-350 tranny, a Nova/Camaro driveshaft will work as well, although you may need a longer one...but the yokes will be right.
If your patient and have access to a decent junkyard, you can get your motor, tranny and rear axle mounted...then make a measurement and go off hunting for an OEM driveshaft that will work. (That's how Atch did Clearance!). Probably a 68-72 Chevelle will be in the ballpark.
Or, you could always bring your yokes to a driveshaft shop and have one made to the correct length.
(Not a bad idea, since you'll also get two new u-joints and balancing along with the deal)
Another option on the rear axle might be a 1948 Pontiac rear axle. I bought one years ago and was surprised to find that it had an open driveline rear axle. (Somebody along the way could have swapped it in, but I doubt it...the car still had the stock flathead straight eight and three speed!).
All in all, you should be able to build a 292 powered 47 Chebby dirt cheap and have some fun with it!
http://www.jalopyjournal.com/ubbthreads/images/graemlins/cool.gif
SwitchBlade327
04-01-2004, 11:48 AM
know what year camaro rear that would be? The rear end thing could be the deciding factor for the car since I'm not really gonna have a shop or an extra set of hands to do much with over the summer months. The easier I can find the parts and the easier to install the better. As far as the driveshaft goes that isn't a big deal, I know a guy that does driveshafts and I know he'll do me right.
Fat Hack
04-01-2004, 02:05 PM
I think the 67-69 Camaro rears are a pinch narrower than the 70-81 units, but either should work.
Measure your spring to spring width, and your stock track width and compare. I see rears in the paper here for under $75 all the time...and maybe cheaper if you went and yanked one yourself at the junkyard.
Keep the 2wd S10s in mind, too...almost identical track width to a Camaro rear.
SwitchBlade327
04-01-2004, 02:10 PM
ah that makes things a bit easier...dunno if I can find a 67-69 rear, but a 70-81 would probaly be easy to find, and there are s-10's everywhere. I'll see what I can figure out. What's the different in the mounts going to be on the old six and the 292?
Hellfish
04-01-2004, 02:12 PM
S10 rear gears may not be what you want though. I'm putting a 55 Chevy rear in my 48 Chevy, but that may not be beefy enough for a built 292. Actually, I hope it is since I'm putting in a built 261...
SwitchBlade327
04-01-2004, 02:20 PM
well I won't go with an s-10 rear unless I can't find a camaro rear, mullet cars are usually too hard to find around these parts so I should be able to find something. Getting this info has made me decide to go find out abotu the cars. I want to get the mechanical stuff in order before the bodywork this time around, did the ford the other way around and I think that's why I ended up letting it go...
Fat Hack
04-01-2004, 02:21 PM
The old six will have a front mount and bellhousing support mounts.
Dig up that old STREET RODDER adrticle (somebody?) and check that guy out...he makes side mounts to bolt your 292 into the 47 chassis...really well engineered stuff!
(The issue your looking for was from last year sometime)
SwitchBlade327
04-01-2004, 02:26 PM
I searched on google a little bit, but came up with nothing, except info on v8 swaps and smaller sixes. Didn't see anything about a 292. Maybe I wasn't searchign with the right keywords...
CURIOUS RASH
04-01-2004, 02:31 PM
<font color="green"> I just put a rear from a 78 Z28 in my 41. Our frames are the same.
I also used the stock springs, I removed the tabs and original crossmember on the bottom of the frame out back, cut holes through the rails and welded pipe in the frame rail that has the same inner diameter as the bushings, then the shackles just hang down each side of the frame out back. The stock spring width for the 70's to early 80's Camaros is the same as your frame rails in the back.
I also welded two cross members in, one just before the rear end where the frame kicks and one at the very end, just behind the gas tank.
Up front I just used the original spring pockets from the Z28, cleaned them up a bit and welded them to the rails where they hit up front.
I then built some mounts for some air shocks out of a Corvette, they were the shortest I could find.
If you like, I can probably take some pics.
RASHY </font>
SwitchBlade327
04-01-2004, 02:35 PM
If I pick them up, i will most definately hit you up for some pictures so I can see exactly what you took out and where. thanks.
SwitchBlade327
04-01-2004, 03:57 PM
i forgot to ask, is there a difference in the lug pattern on the camaro and s-10 rears, and do you need to do anything special with the rims?
luckystiff
04-01-2004, 04:57 PM
why not finish your ford? find a cheap 70s donor which there are lots of around here and should be there if not let me know and i will help you. if you play your cards right you should be able to get everything you need out of a single donor and turn around and sell the hull to the scrap man to make part of you money back to. it's your deal but i think you could finish that ford which is more than half done cheaper than you could build a chevy that you have to buy. focus my friend is the key factor. hell i still wish i didn't have so much shit here i'd buy the ford from ya and finish it. i just got to much shit already. gonna finish the plymouth in the next few months and then i want to redo the buick and build a truck to. all this and we're talking about moving to florida within the next coupla years. i'm tired of nc winters yeah i know they aren't that bad but i'm from alabama and in comparison they suck just enough. have you looked into trying to find a small shop to work out of during the summer? you may get lucky and find a place on the cheap. yeah you might have to shell out $200 a month or so but you'd have a place to work on your shit. it's the best thing i've done i a while even though i don't get to my shop as much as i like. thats changing a bit now that i don't work at the tattoo shop and have more of a set schedule. just some things to think about. the longer you let that ford set the harder it'll be to get back to it, ive been there and done that i imagine we all have. either way good luck and let me know if i can do anything for you as far as tracking down parts for either car you choose. by the way are you goin' to the auto fair this weekend? i'll be there early sat till probably mid afternoon or so. you should come out...ken....
SwitchBlade327
04-01-2004, 05:26 PM
ford's gone ken, a buddy got it from me so I could go pick up the 34 that the old bastard sold out from under me. I'm really wanting a hot rod project, but I need to get ahold of somethign soon so I can have it in the shop a little bit before semester is over, theres no damn deals on anything around here though. no money for the auto-fair, and I have a party to go to and my ma's leaving for FL for a few weeks on saturday so we're supposed to see her too. You don't know of any cheap hot rod bodies do ya? don't matter to me what kinda, just something old and ratty.
fatassbuick
04-01-2004, 06:34 PM
Jason Parker is building a '46. He doesn't do much internet, but he would probably help you out. IM me your number (lost my address book) and I'll give it too him.
Fat Hack
04-01-2004, 09:03 PM
2wd S10s and Camaros had the same GM 5 on 4.75" bolt pattern.
Also look at Novas, Firebirds, Omegas, Venturas and Apollos of the 70s for rears.
Here some suspension info
suspension (http://50chevy.freeservers.com/Suspension_Widths.html)
Here are some pix
old post (http://www.jalopyjournal.com/ubbthreads/showflat.php?Cat=&Number=337220&page=&view=&sb=5&o =&fpart=1&vc=1)
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