Replacement Block
Thread Starter
Racer
Joined: Apr 2003
Posts: 394
Likes: 5
From: Uniontown PA
Replacement Block
Just purchased my first C2.It is a beautiful 67 Goodwood green coupe 427 400 4 speed in outstanding condition.I know the engine block is a replacement and am wondering if the general could have sent a 4 bolt in exchange for the 2 bolt original?The date code would be in the warranty period,all other items appear correct for the car.Any help would be appreciated
Emmett
Emmett
Safety Car
Joined: Feb 1999
Posts: 3,631
Likes: 14
From: Fountain Hills AZ
If the engine was warranty replacement probably not. As I understand it, they used assembled short blocks for replacements and the 4 bolt blocks used different pistons (forged) and cam (solid). I think the 4 bolt blosk also had a tapped and plugged fitting above the oil filter while the 2 bolt blocks didn't.
Team Owner
Joined: Oct 2000
Posts: 38,897
Likes: 1,926
From: Washington Michigan
Check the forward hole of the three directly above the oil filter pad; if the front hole is drilled 5/16" (blind hole), it's a 2-bolt block; if it's a 3/8" pipe thread hole into the oil gallery, it's a 4-bolt block. 
