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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: Novadiecast on June 21, 2007, 02:28:26 pm

Title: 454 Big block guys???????
Post by: Novadiecast on June 21, 2007, 02:28:26 pm

I have a 454 with engine code TRH dated h-10-73 casting number ending in 289 so it is a late 73 454 but any idea if it would be a 2 bolt or 4 bolt block without ripping in out of the car it is in now???

Title: Re: 454 Big block guys???????
Post by: Captkaos on June 21, 2007, 02:55:05 pm

Is the block code 3999289, if so it is a 2 bolt main.  These were 72-78 Power power passenger car/truck blocks.

Title: Re: 454 Big block guys???????
Post by: Novadiecast on June 21, 2007, 02:59:25 pm

It is 3999289 but they were came both ways to my understanding?????

Title: Re: 454 Big block guys???????
Post by: joesgarage71 on June 22, 2007, 09:29:01 am

 TRH is a 454 400 trans 240HP truck engine
 3999289 454 2 bolt truck