Engine Dilemma
When I purchased my '66 convertible over 35 years ago, the original engine had unfortunately been replaced. As I begin the restoration of this car, I have been trying to determine which engine came with this car. I know it was a 427 and has the 427 hood and transistor ignition. Is there any way to determine whether it was an L36 or L72? Thanks.
-
-
Re: Engine Dilemma
At what RPM does the redline start on the tach, and what is the maximum number on the oil pressure gage?
Is the original transmission installed? WR or CR? What are the axle numbers?
The above information will likely tell the story.
Duke -
Re: Engine Dilemma
Thanks for the quick response, Duke. The redline starts at 6500 and the oil pressure gauge goes to 80. I will need to do some additional checking on the transmission and axle numbers.Comment
-
Re: Engine Dilemma
Duke,
The original transmission is in the car. I must plead some ignorance here. I assume that WR and CR is wide and close ratio. How would I determine that?
Thanks for your help.
DaveComment
-
Re: Engine Dilemma
Correct on WR and CR. If the trans is a CR and the axle is other than a 3.08 this is further evidence of L-72.
Assuming the car is driveable the WR and CR can be determined by a 3-4 shift at 3000 revs. If fourth gear revs drop to about 2350 it is a CR, if about 2000 it is WR.
Assuming the installed speedometer gearing is correct for the installed axle ratio:
Axle ratio = indicated fourth gear revs @ indicated 60/760, regardless of the installed tire revs/mile.
DukeComment
-
Re: Engine Dilemma
all F-41 equipped 66 were originally 425hp cars but not all 425's got F-41. how many leaves in rear spring and what's the OD of the front sway bar? mikeComment
Comment