Go Back  Offshoreonly.com > Technical > General Q & A
Will this block work? >

Will this block work?

Like Tree2Likes

Will this block work?

Reply

Old 06-13-2018, 08:54 PM
  #1
NMN
Registered
Thread Starter
 
Join Date: Jun 2018
Location: Roodhouse Illinois
My Boat: 1982 Hammond Challenger MK II
Posts: 23
Default Will this block work?

The boat I picked up recently ended up having a Gm 5.7 SGI Casting # 1409360 with a cracked block, something I knew might be a possibility. I have found another block but I am unsure if everything is going to match up correctly or if I need to search for a different block? The block ID is V0531TYZ . 1975, 350, 165 HP,4 Bolt. Any help would be great!
NMN is offline  
Reply With Quote
Old 06-15-2018, 05:01 AM
  #2
Registered
 
Join Date: Dec 2013
Location: Chaumont River, Ny.
My Boat: Many,...
Posts: 367
Default

Gm 5.7 SGI Casting # 1409360 with a cracked block,
Ayuh,.... 'n what vintage is this one,..??
Bondo is offline  
Reply With Quote
Old 06-15-2018, 07:17 AM
  #3
NMN
Registered
Thread Starter
 
Join Date: Jun 2018
Location: Roodhouse Illinois
My Boat: 1982 Hammond Challenger MK II
Posts: 23
Default

The cracked block is in a 1982 Hammond Challenger MK II. Someone had already done a motor swap long ago
NMN is offline  
Reply With Quote
Old 06-15-2018, 08:09 AM
  #4
SORE MEMBER
Platinum Member
 
Wobble's Avatar
 
Join Date: Apr 2004
Location: 2950'49.74"N 95 5'17.55"W.......TEXAS
My Boat: SeaDoo RXP & RXP-X, Stryker Equalizer 28, Eliminator Daytona Jet
Posts: 6,897
Default

Hell, it's either time for a big block or an LS. Those challengers love power.
Wobble is offline  
Reply With Quote
Old 06-15-2018, 08:12 AM
  #5
Registered
 
Join Date: Jan 2007
Location: Murrayville Georgia
My Boat: 1970 Wesco V-drive & 1974 CEE BEE Avenger jet boat
Posts: 1,085
Default

the '75 350 block should be a two piece rear main seal and the 5.7 140*** block is probably a one piece seal so the crank wont interchange. the 140*** number is missing a digit from what I can find and the TYZ is a use designation not the casting number of the block itself.
compedgemarine is offline  
Reply With Quote
Old 06-15-2018, 09:03 AM
  #6
SB
Registered
iTrader: (1)
 
Join Date: Nov 2004
Location: On A Dirt Floor
Posts: 9,344
Default

you are missing a # with the block in the boat.

Originally Posted by Wobble View Post
Hell, it's either time for a big block or an LS. Those challengers love power.
Ryan;s had a 23* 383. Went over 80.
Wobble and NMN like this.
SB is offline  
Reply With Quote
Old 06-15-2018, 09:33 AM
  #7
Registered
 
Join Date: Jan 2013
Location: Saint Johns Michigan
My Boat: 1988 29' FOUNTAIN 19' Tahiti Jet w 468 ci. 15' Aerocraft
Posts: 65
Default

Where are you located ?
29 FOUNTAIN FUN is offline  
Reply With Quote
Old 06-15-2018, 09:45 AM
  #8
SORE MEMBER
Platinum Member
 
Wobble's Avatar
 
Join Date: Apr 2004
Location: 2950'49.74"N 95 5'17.55"W.......TEXAS
My Boat: SeaDoo RXP & RXP-X, Stryker Equalizer 28, Eliminator Daytona Jet
Posts: 6,897
Default

North Minnesota would be my guess.
Wobble is offline  
Reply With Quote
Old 06-15-2018, 05:25 PM
  #9
NMN
Registered
Thread Starter
 
Join Date: Jun 2018
Location: Roodhouse Illinois
My Boat: 1982 Hammond Challenger MK II
Posts: 23
Default

I know it would love one but the checkbook isn't ready for that yet. i am trying to stay with the 350 because I am new to this and its easy to work on as well as lots of parts available.
NMN is offline  
Reply With Quote
Old 06-15-2018, 05:27 PM
  #10
NMN
Registered
Thread Starter
 
Join Date: Jun 2018
Location: Roodhouse Illinois
My Boat: 1982 Hammond Challenger MK II
Posts: 23
Default

Thanks for the information sorry about the missing number. I found that you are correct.
NMN is offline  
Reply With Quote

OSO Sponsor
OSO Advertiser
OSO Advertiser
OSO Advertiser