Replacing a 454 GEN IV engince core with a GEN V
08-13-2023 | 08:15 PM
#12
Registered
Joined: Jan 2005
Posts: 3,570
Likes: 127
From: Pasadena, MD
The Gen V oil pans fit on the Gen VI blocks though?
The Gen VI oil pan gaskets...are they just an upgrade and can be used on the Gen V?
I have 2 frost cracked Gen V blocks...I want to replace them with Gen VI for the roller cam option, and the upgrades.
My 088 heads and cranks will work on the Gen VI...but now I'm not sure the oil pan will fit.
The Gen VI oil pan gaskets...are they just an upgrade and can be used on the Gen V?
I have 2 frost cracked Gen V blocks...I want to replace them with Gen VI for the roller cam option, and the upgrades.
My 088 heads and cranks will work on the Gen VI...but now I'm not sure the oil pan will fit.
08-18-2023 | 03:34 AM
#13
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Joined: Aug 2019
Posts: 1,249
Likes: 420
From: BC
Hi All,
I am rebuilding a 454 PCM engine with a cracked block due to frost damage and I was directed here by one of the members of correctcraftfan (a forum for older ski boats).
Ideally, i would replace the engine core with an identical one, but in Europe these blocks are very hard to find.
The one I was able to find is a GEN V instead of the GEN IV I have. The work needed on this block is quite extensive so I want to make sure that this is possible before investing the money.
Some information about the original engine:
-GEN IV LH rotation
-GM hi-perf 14086188 heads
-4 bolt
-Forged pistons
-Edelbrock performer intake
The new engine is a GEN V Mercruiser, LH, 4 bolt, cast piston engine.
I know that the sump, crank, and timing chain cover are different, but I have all these parts except for the cover.
I would need to add an electric fuel pump as well I heard.
Is there anyone who has done a swap like this before?
Any help on this topic is greatly appreciated!
Cheers,
Lenny
I am rebuilding a 454 PCM engine with a cracked block due to frost damage and I was directed here by one of the members of correctcraftfan (a forum for older ski boats).
Ideally, i would replace the engine core with an identical one, but in Europe these blocks are very hard to find.
The one I was able to find is a GEN V instead of the GEN IV I have. The work needed on this block is quite extensive so I want to make sure that this is possible before investing the money.
Some information about the original engine:
-GEN IV LH rotation
-GM hi-perf 14086188 heads
-4 bolt
-Forged pistons
-Edelbrock performer intake
The new engine is a GEN V Mercruiser, LH, 4 bolt, cast piston engine.
I know that the sump, crank, and timing chain cover are different, but I have all these parts except for the cover.
I would need to add an electric fuel pump as well I heard.
Is there anyone who has done a swap like this before?
Any help on this topic is greatly appreciated!
Cheers,
Lenny
Gen VI you can use your 188 heads.
Best if you can find a good Mark IV block and transfer over.
Lots in NA for good prices, shouldn't be too hard to ship.
08-18-2023 | 10:34 AM
#14
Platinum Member
Joined: Jun 2004
Posts: 7,321
Likes: 1,039
From: frankenmuth michigan
The Gen V oil pans fit on the Gen VI blocks though?
The Gen VI oil pan gaskets...are they just an upgrade and can be used on the Gen V?
I have 2 frost cracked Gen V blocks...I want to replace them with Gen VI for the roller cam option, and the upgrades.
My 088 heads and cranks will work on the Gen VI...but now I'm not sure the oil pan will fit.
The Gen VI oil pan gaskets...are they just an upgrade and can be used on the Gen V?
I have 2 frost cracked Gen V blocks...I want to replace them with Gen VI for the roller cam option, and the upgrades.
My 088 heads and cranks will work on the Gen VI...but now I'm not sure the oil pan will fit.
Gen V uses its own timing cover that fits only a GEN V but oil pan fits a gen V and 6
Gen 6 uses its own timing cover BUT again , the gen V pan fits gen V and 6 , Smitty
