The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - dana 60 questions (gear ratio, posi, etc)

Rod · 10-15-2003, 08:40 PM

The posi is called a power-lok in a dana of this vintage... would look like this inside the diff. Whwen lookign at the crown gear you will see numbers stamped on it... for example theres the typical part number and then say... a 41-10 doing the division math you know its 4.10 ratio. 41 divide by 10.

10-15-2003, 08:40 PM	#2
Rod Join Date: Dec 1999 Location: Eastern - Manitoba Canada, Winnipeg Posts: 4,369	The posi is called a power-lok in a dana of this vintage... would look like this inside the diff. Whwen lookign at the crown gear you will see numbers stamped on it... for example theres the typical part number and then say... a 41-10 doing the division math you know its 4.10 ratio. 41 divide by 10. Attached Images __________________ Senior active founding member. 70 3/4 ton GMC Suburban 4x4 250/4 spd. 71 1/2 ton Suburban Chevy 4x4, 350/350 72 Chev 1 ton tow truck 402BB w/Holmes 440 wrecker on propane 2005 FLSTSCI Harley Springer 85 FXSB Harley Lowrider 72 Triumph 650 Bonneville 5spd "Poor people don't have hobbies" Quote from wife.