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gregga

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Hey guys,

I have an older 28' Cigarette with merc. 292's. Both engines are overheating pretty badly and knocking last time we ran the boat which was roughly 4 years ago. Instead of pulling them apart and all that fun stuff, we are wanting to just swap in some merc. 250's. I have a pair on hand as long blocks pretty cheap and I know my exhaust will swap over. but just wondering what else will swap over from my 292's into the 250's? I can't find any 292's for sale nor find parts for them so i'm just wanting to swap to the 250's but would like to be able to just swap my existing parts over. Any help is greatly appreciated. Thank you.
 
The GM 292 was an inline 6 cylinder, similar in appearance to the 250.
The 292 preceeded the 250 by quite a few years, if memory serves me.
It looks like the 230 and 292 are in the same L6 family group.

I'm not sure if these two engines (250 and 292) offer any interchangeability.... other than the rear engine flange bolt pattern.

I-6_292asm.gif
 
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These engines you want to drop in will work without question. Merc engines you say... the mani no problem as well as the elbow / risers.

Starter, alt everything will change over without question.

Have any problems as you go just post we all will reply.

My very first car i overhauled a Nova had it in it.
 
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gregga said:
Hey guys,

I have an older 28' Cigarette with merc. 292's. Both engines are overheating pretty badly and knocking last time we ran the boat which was roughly 4 years ago. Instead of pulling them apart and all that fun stuff, we are wanting to just swap in some merc. 250's. I have a pair on hand as long blocks pretty cheap and I know my exhaust will swap over. but just wondering what else will swap over from my 292's into the 250's? I can't find any 292's for sale nor find parts for them so i'm just wanting to swap to the 250's but would like to be able to just swap my existing parts over. Any help is greatly appreciated. Thank you.
Click to expand...
292 block is 25mm taller than 250 and longer stroke,all bits will exchange check the risers for blockage re overheating
 
Thanks guys, Just decided to rebuild the engines and put them back in! Got rebuild kits fairly cheap and the block work was done as well. Thanks guys.
 
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