Yes, but with some note worthy issues. The heads will bolt to the block, but you will have a large intake port mismatch (the 455 intake ports are about .300 taller than the 350 ports.). You can not swap intakes to cure this, since the 455 has a taller deck height than the 350. You can however, port the top of the intake runners on a 350 intake manifold to get them closer to the 455 size (an Edelbrock Performer RPM can apparently be ported to match), or port a 350 head to get it closer to the 455 intake. Be careful to not remove too much material. There is also the problem of compression 455 heads are listed as 72cc combustion chambers, but usually measure closer to 80cc. 350 heads are listed at 60cc and are about 60-65cc. Swapping the 455 heads onto the 350 will loose about 1.5-2.0 points of compression. Results will be around 7-7.5to1. You could do it with coustom pistons to get back the lost compression. 350 heads on a 455 will raise compression too high for pump gas, and have smaller ports and (usually) smaller valves, not good for performance. Lots of Oldsmobile info at this site: http://www.442spot.com/cpierce/oldsfaq/ofhed.htm
No, the throttle body and multi port heads are not interchangeable.No, the throttle body and multi port heads are not interchangeable.
no you cannot they are not interchangeable the 89 heads are fuel injected heads and the 79 are carb heads and will not interchange
yes
You can put Oldsmobile 350 heads on an Oldsmobile 307, if the 307 is 1984 or older. It will take some work but it can be done, I know for a fact that it can, because my 307 has 350 heads on it. It runs great. I'm not sure about the cam though.
Screwed into the heads.
Yes you can
No, they are completely different.
The knock sensor is located on the 95 oldsmobile 98 with a 3800 engine under the midpoint of the heads.
Yes it will make a difference to over all preformance. However they use different intake manifolds compaired to a early model small block chevy. An Olds engine does not have any parts interchangeable with a Chevy engine.
Actual olds heads casting numbers are underneath the valve covers
No, the 4.7L is an overhead cam engine while the 5.7L is a cam in block engine.
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