Originally Posted by panic
What dimension of the pump you have is longer: the entire pump body? The tower? The actual gears?
The shaft and shaft housing are quite a bit longer. The input and output line sizes and locations are different too - the M-45 replacement in/out are side by side, where as the GM 3701562 are almost stacked and at a bit of an angle from each other.

Comparison pic: https://flic.kr/p/2jiJQkM

The one on the left is the GM 3701562, and the one on the right is the Melling M-45 replacement for the 235/261.

Last edited by BLUEMEANIE; 07/06/2020 8:16 PM.
1951 Chevy 3100
In the Stovebolt Gallery
www.rustyfiftyone.com