455 olds swap

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

buddydog

Junior Member
Joined
Dec 31, 2013
Posts
2
Reaction score
0
Location
ohio
First Name
matt
Truck Year
1979
Truck Model
sierra heavy half
Engine Size
oldsmobile 455
My 79 gmc heavy half had the olds diesel from factory but in 1992 motor was swapped out for a olds 455.Has anyone else done that?
 

foamypirate

Full Access Member
Joined
Jul 30, 2010
Posts
3,302
Reaction score
453
Location
Central TX
First Name
Jake (Mr. Wilson)
Truck Year
1980
Truck Model
El Camino, baby!
Engine Size
5.3L/4L60E
HotRodPC on here has always wanted to do it. I'll sure bet that thing is a torque monster!
 

gpmorgan

Full Access Member
Joined
Nov 9, 2013
Posts
562
Reaction score
105
Location
Tupelo Ms.
First Name
greg
Truck Year
1992
Truck Model
1500
Engine Size
632
Sounds like a good swap. Probably wasn't much to it. I think most of the 455's had about 500 foot lbs of torque.
 

Stroked

Full Access Member
Joined
Dec 26, 2011
Posts
2,248
Reaction score
88
Location
Beloit, Kansas
First Name
Jared
Truck Year
1984
Truck Model
K10
Engine Size
305
I saw one just like that on an auction when I was in high school. It sold for more than I could afford unfortunately...

Sent from my Kindle Fire HDX using Tapatalk
 

X-cabsquarebody

Full Access Member
Joined
Aug 19, 2012
Posts
213
Reaction score
73
Location
Western NC
First Name
Billy
Truck Year
80, 80, 87, 91
Truck Model
C10, C10 ,K30 , 3500
Engine Size
305 TPI, 454, 8.1
My father swapped an Olds 455 in place of a 350 diesel back in 1982 in his 80 c10. It was a monster! I have the truck now, and sold the 455 a few years back. The guy I sold the engine to is building it to put out about 450 HP, 600 TQ. He is putting it in an 85 c10.

It is a great swap! I have an 8.1 vortec to go back in my truck.
 

HotRodPC

Administrator
Staff member
Admin
Joined
Aug 29, 2010
Posts
47,014
Reaction score
9,015
Location
OKC, OK
First Name
HotRod
Truck Year
85 K20 LWB
Truck Model
Silverado
Engine Size
454 - Turbo 400 - 3.73
PICS PICS PICS !!! :manos:

I never got to do it. Ended up selling my 425, and both 455's along with my Squarebody Olds mounts. I'd love that set up. I do still have the Variable Pitch stall Th400 trans for the project though. MrMarty has been going to put a Big Block Olds in a Square too. Mine was going to be a ChevrOldslet.
 

Attachments

  • chevroldsletlogo4.jpg
    chevroldsletlogo4.jpg
    9.6 KB · Views: 313

towjoe

Full Access Member
Joined
Jul 22, 2012
Posts
695
Reaction score
136
Location
Lafayette,IN
First Name
joe
Truck Year
78,80,81,81,86,88,89
Truck Model
K30's or V3500's
Engine Size
6.2, 454
I have a 80 c10 that was a diesel to start with and was converted to a 350 olds. Was a pretty fun truck to drive, the old pre smog olds run pretty good. Transmission went out and it got parked
 

1984dually

Full Access Member
Joined
Aug 31, 2013
Posts
242
Reaction score
47
Location
Malin OR
First Name
Danny
Truck Year
1984
Truck Model
C30
Engine Size
8.1L
Bought a1980 chevy wagon one time with an olds diesel in it. Blew water out the tail pipe until it quit. Swapped in a 455 from a late 70's 98 or 88( been a long time).Bolted right in and the diesel exhaust bolted right up. Pulled my car trailer for the next couple of years. Put on several thousand miles around the SE states and always ran good. Sold the car when we moved back to Oregon
 

X-cabsquarebody

Full Access Member
Joined
Aug 19, 2012
Posts
213
Reaction score
73
Location
Western NC
First Name
Billy
Truck Year
80, 80, 87, 91
Truck Model
C10, C10 ,K30 , 3500
Engine Size
305 TPI, 454, 8.1
My C10 with the 455 would out pull my 2000 Chevy 1 ton with a 454.
 

HotRodPC

Administrator
Staff member
Admin
Joined
Aug 29, 2010
Posts
47,014
Reaction score
9,015
Location
OKC, OK
First Name
HotRod
Truck Year
85 K20 LWB
Truck Model
Silverado
Engine Size
454 - Turbo 400 - 3.73
OK make it stop. I already have regrets all over again !!! Stop it !!! No more Olds 455 Squarebody Swap Talk. I've done had enough for another 6 months. :Sumo:

:happy175:
 

GreaseDog

Full Access Member
Joined
Aug 8, 2010
Posts
1,189
Reaction score
33
Location
Elkhart, IN
First Name
Jeremy
Truck Year
1977 K20
Truck Model
1980 K2500
Engine Size
350
I had a 73 C20 with a 455 in it. Used stock 5.7 diesel mounts and a Th400
 

HotRodPC

Administrator
Staff member
Admin
Joined
Aug 29, 2010
Posts
47,014
Reaction score
9,015
Location
OKC, OK
First Name
HotRod
Truck Year
85 K20 LWB
Truck Model
Silverado
Engine Size
454 - Turbo 400 - 3.73
FAK !!! I just really need to quit watching this thread. Makes me sick I got rid of all my Olds 425 and 455 motors. I do still have the variable pitch Th400 though. I can still run behind a Chevy motor.
 

89Suburban

Supporting Member
Supporting Member
Joined
Dec 7, 2010
Posts
24,536
Reaction score
5,827
Location
Southeast PA
First Name
Paw Paw
Truck Year
2007
Truck Model
Chevrolet Tahoe LT
Engine Size
5.3, 4WD
FAK !!! I just really need to quit watching this thread. Makes me sick I got rid of all my Olds 425 and 455 motors. I do still have the variable pitch Th400 though. I can still run behind a Chevy motor.

:lol: :console:


Sent from my iPod touch 4th Gen using Tapatalk
 

ruedger455

Full Access Member
Joined
Mar 26, 2013
Posts
143
Reaction score
0
Location
three rivers , mi
First Name
kimber
Truck Year
1977
Truck Model
k2500 grande sierra
Engine Size
350
Did anyone ever accomplish this? This i my dream to put a olds 455 in my 77 gmc k25.
 

Skweegle89

Full Access Member
Joined
May 21, 2014
Posts
2,347
Reaction score
25
Location
Oklahoma
First Name
Zach
Truck Year
1985
Truck Model
K10
Engine Size
350
Did anyone ever accomplish this? This i my dream to put a olds 455 in my 77 gmc k25.


I saw a supposedly running one today on CL for like $400


Sent from my iPhone using Tapatalk
 

Latest posts

Forum statistics

Threads
42,185
Posts
910,906
Members
33,678
Latest member
tnahaus
Top