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Re: 1958 chevy truck, need help
lancer70 #1374322 Fri Aug 21 2020 08:15 PM
Joined: Apr 2005
Posts: 9,449
Grease Monkey, Moderator General Truck Talk & Greasy Spoon
Well that does help. Either someone shoehorned the 270 into a Chevy or someone hung Chevy sheet metal on a GMC chassis. Thank you for the update.


Martin
'62 Chevy C-10 Stepside Shortbed (Restomod in progress)
'47 Chevy 3100 5 Window (long term project)
ā€˜65 Chevy Biscayne 4dr 230 I-6 one owner (Iā€™m #2)
ā€˜39 Dodge Businessmans Coupe
USAF 1965-69 Weather Observation Tech (got paid to look at the clouds)


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Re: 1958 chevy truck, need help
3B #1374325 Fri Aug 21 2020 08:26 PM
Joined: May 2013
Posts: 27
L
Wrench Fetcher
thank you for this information, im still not clear on what bellhousing will work with my truck, my clutch comes out the bell housing on drivers side, starter on passenger side of bellhousing, bell housing has flat flanges on bottom each side

Re: 1958 chevy truck, need help
lancer70 #1374329 Fri Aug 21 2020 08:43 PM
Joined: Feb 2004
Posts: 21,912
H
Boltergeist
A 283 will be a giant leap backwards in torque, and possibly horsepower as well. Do you have a 283 engine already? If not, I need to talk with you by PM. You'll still need the cast iron V8 bellhousing that was used from mid-year 1955 to 1961 or so, the one that was mentioned in a previous post. DO NOT dispose of that GMC engine!
Jerry


The murder victim was drowned in a bathtub full of Rice Krispies and milk.
The coroner blamed the crime on a cereal killer!

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Re: 1958 chevy truck, need help
lancer70 #1374349 Sat Aug 22 2020 12:22 AM
Joined: May 2013
Posts: 27
L
Wrench Fetcher
I just thought it would be better driving with a 283 , first gear is very low, current engine runs good just kind of loud, i thought 283 would be better, i dont think this engine has very much HP

Re: 1958 chevy truck, need help
lancer70 #1374354 Sat Aug 22 2020 12:37 AM
Joined: Feb 2004
Posts: 21,912
H
Boltergeist
Click on the flashing envelope at the upper right of the page, please!
Jerry


The murder victim was drowned in a bathtub full of Rice Krispies and milk.
The coroner blamed the crime on a cereal killer!

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
Re: 1958 chevy truck, need help
lancer70 #1374355 Sat Aug 22 2020 12:46 AM
Joined: Jan 2000
Posts: 561
D
Shop Shark
I have a 1957 Chevy/NAPCO truck that came with a 235, later I installed a 261. Then I went to a 283. I used a tubular under engine mount instead of the front engine mounts for the 283. I found the side mounting to be strong and easy to install. My next engine was a 348, and I was able to use the existing side mount with the 348. So for potential future engine installs, the side mounting may provide more flexibility. Also, I wanted the 283 at the time, because I "just wanted a 283." In retrospect the 283 was a great engine, but the low end torque was a little light for my application; My truck has 3:38 differentials and a 3 speed OD trans (I electronically split the gears so it is essentially a 6 speed). The low end grunt of the current 348 is strong. Since small block Chevy engines are about the same install-wise, you might consider a 327, 350, or 383. I think you might be happier with the power over a 283. Unless of course you "just want a 283."
don

Last edited by Donsz; Sat Aug 22 2020 12:47 AM.
Re: 1958 chevy truck, need help
lancer70 #1374361 Sat Aug 22 2020 01:25 AM
Joined: Mar 2004
Posts: 4,891
M
Shop Shark
You say you have flat bell housing mounts, but Chevrolet 55-59 used angled mounts. Has your bell housing cross member been replaced? Does everything look factory stock or have things been changed?

Have you confirmed if you have a Chevrolet or GMC frame? Chevrolet stamped the serial number on top of the frame left side above the front axle.

Mike B smile

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