C3 Engine Type
Thread Starter
8th Gear
Joined: Aug 2017
Posts: 8
Likes: 0
Looking at the stamps on my inlet manifold - the Date is "D 7 8", which I assume is April 07, 1978? Looking at the casting number on the inlet manifold, it is "346249", which looking up says it's from a 300/350/400 engine.
So, obviously the block is from a 327, but the inlet manifold etc. have been updated. Would I assume it's therefore off a '77 / '78 350 Engine and the 327 has been upgraded to a 350 when rebuilt?
Is there anywhere else to check new components / parts without pulling it apart? :P
So, obviously the block is from a 327, but the inlet manifold etc. have been updated. Would I assume it's therefore off a '77 / '78 350 Engine and the 327 has been upgraded to a 350 when rebuilt?
Is there anywhere else to check new components / parts without pulling it apart? :P
Race Director
Joined: Oct 2000
Posts: 12,640
Likes: 3,103
From: Shamong, NJ
Is there anywhere else to check new components / parts without pulling it apart? :P[/QUOTE]
A "lumpy" idle would indicate a big cam, but no, there's really no way of knowing what's inside an engine with tearing it down.
Thread Starter
8th Gear
Joined: Aug 2017
Posts: 8
Likes: 0
A "lumpy" idle would indicate a big cam, but no, there's really no way of knowing what's inside an engine with tearing it down.[/QUOTE]
- Thanks for that. It has a very lumpy idle, but I assumed that is because it wasn't tuned properly or was just a GM norm.
Regardless, I prefer the Corvette to the XJS I used to have. More room to work around and parts are easier and cheaper to source!
- Thanks for that. It has a very lumpy idle, but I assumed that is because it wasn't tuned properly or was just a GM norm.
Regardless, I prefer the Corvette to the XJS I used to have. More room to work around and parts are easier and cheaper to source!
