OK, I know that this topic has been covered many times over, but in all the conversations I have not been able to find the answer I am looking for.
In short what I am looking for is camshaft grind numbers.
I currently own a Larson DC-175 BC with a 4.3 non HO OMC (432APRGDP). The previous owner knew nothing about mechanics and did not winterize it so the block cracked over our cold winters. He ran it the next spring....:facepalm:
What I have done now is found an Astro Van with a compatible block. I have called the dealer and found the original cam number (14093686).
Van 4.3 Cam
Cam Type : Hydraulic
Exhaust Duration : 195?
Exhaust Lift (Inches) : 0.257"
Exhaust Lift (mm) : 6,515 mm
Intake Duration : 179?
Intake Lift (Inches) : 0.234"
Intake Lift (mm) : 5,933 mm
Lobe Center-line (Exhaust) : 112 Deg
Lobe Center-line (Intake) : 108 Deg
Lope Separation : 110?
Overlap : 33?
The only thing I cannot locate is the lope separation and overlap degrees for the original cam.
In the OMC Manual, All that it says is I/E 0.234/0.257.
Would I assume the original cam is the exact one as the Original? If anyone has the original OMC grind numbers That would be AWESOME
I really don't want to swap the cams and wind up wrecking the bearings.
In short what I am looking for is camshaft grind numbers.
I currently own a Larson DC-175 BC with a 4.3 non HO OMC (432APRGDP). The previous owner knew nothing about mechanics and did not winterize it so the block cracked over our cold winters. He ran it the next spring....:facepalm:
What I have done now is found an Astro Van with a compatible block. I have called the dealer and found the original cam number (14093686).
Van 4.3 Cam
Cam Type : Hydraulic
Exhaust Duration : 195?
Exhaust Lift (Inches) : 0.257"
Exhaust Lift (mm) : 6,515 mm
Intake Duration : 179?
Intake Lift (Inches) : 0.234"
Intake Lift (mm) : 5,933 mm
Lobe Center-line (Exhaust) : 112 Deg
Lobe Center-line (Intake) : 108 Deg
Lope Separation : 110?
Overlap : 33?
The only thing I cannot locate is the lope separation and overlap degrees for the original cam.
In the OMC Manual, All that it says is I/E 0.234/0.257.
Would I assume the original cam is the exact one as the Original? If anyone has the original OMC grind numbers That would be AWESOME
I really don't want to swap the cams and wind up wrecking the bearings.
