Swapping 455 Buick engine to 350 olds

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Ranwild69

n00b
Dec 9, 2019
3
1
I have a 1970 455 Buick engine that I would like to put into a 1970 olds Cutlass with a 350 engine can anyone tell me if it will swap over and if motormouts trany belhousing and anything else will swap over with out major changes
 
500/600

500/600

G-Body Guru
Supporting Member
Nov 17, 2018
672
93
West Virginia
Your auto trans is a straight bolt up. Engine mounts from TA Performance
 
500/600

500/600

G-Body Guru
Supporting Member
Nov 17, 2018
672
93
West Virginia
BTW, that will be a nice swap.
 
Longroof79

Longroof79

Rocket Powered Basset Hound
Oct 14, 2008
10,559
113
Gainesville, Fl
Welcome aboard!
How about an introduction and tell the good folks what you're working on...and maybe a few pics as well.
 
MrSony

MrSony

Geezer
Nov 15, 2014
5,378
113
Des Moines, Iowa
get parts for a 70 skylark. frame pads/mounts from TA performance. Fuel lines will probably be on opposite sides as well as battery/starter locations if I remember.
 
olds307 and 403

olds307 and 403

Geezer
Oct 14, 2008
5,597
113
Melville,Saskatchewan
As said a few differences. Is the 455 rebuilt? I personally really like the Olds 350, the new billet 4" stroker crank for them makes 400+ hp and 500+ ft/lbs easy. It means up to 428 ci plus smaller 2.5" and 2.125" journals, the 4" 5140 or 4340 cranks weighs less than the 330 steel crank and is much stronger. Both motors should weigh about the same and the Olds 350 should have a stronger bottom end.
 
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Reactions: DRIVEN
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Ranwild69

n00b
Dec 9, 2019
3
1
Could you be talked into trying to trade the Buick 455 for an Olds 455? Sure would make the swap simpler.
Yes if you have a good one to trade I'm planning on doing my own overhaul no matter what
 
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Ranwild69

n00b
Dec 9, 2019
3
1
Yes if you have a good one to trade I'm planning on doing my own overhaul no matter what
I have the 455 Buick blown apart and in the machine shop but they haven't done anything because they are afraid it won't work so I am trying to learn anything I can
 
500/600

500/600

G-Body Guru
Supporting Member
Nov 17, 2018
672
93
West Virginia
I have the 455 Buick blown apart and in the machine shop but they haven't done anything because they are afraid it won't work so I am trying to learn anything I can
What won’t work?
 

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