914 Water pump, Yes a SBC Options

[drive-ability]

I'm replacing my Renegade/Chrysler BB pump, since it locked up last night. I didn't here any noise at all ? The engine does make a bit of noise but you would think there would be some warning. Nope ! Maybe something broke off and jammed up the impeller etc. The pump just locked up and melted the drive belt.
My question is I have been running a standard pump and decided to get a high volume unit. My assumption is the quality is better than my last one and with A/C it might perform better moving more water. I guess with more pressure comes it own set of issues. One thought is the belt was too tight, and that's a good bet.
I'm not running a Thermostat but am running a minor restriction in the thermostat housing, which I think I should remove.. ?

Any one have any input here. (IMG:style_emoticons/default/type.gif)

[SLITS]

Here are your answers:

1.) the image I showed him he agreed that the impeller came apart, but the cibearing did not fail.

2.) The pump used is a Lester 1352, small bearing, A/C pump, with 6 fins. In the manufacture of the impeller, there is a small round hole at the base of the impeller that is a weak point. This pump was used on 1961 - 1964 Chrysler 361 CID engines, the 1959 - '1971 383 CID engines, 1963 - 1964 426 CID engines and 1966 - 1971 440 CID engines. Impeller diameter is 3.500". This unit moves water faster, but with less volume.

3.) The alternate pump is a Lester 1317. It was used on NON-A/C vehicles. It has an 8 fin impeller. Same engine, same years, but NON-A/C vehicles. It moves water slower, but a higher volume. Diameter of the impeller is 4.185".

4.) The next series came due to the use of the engines in Motor Homes and they would overheat on climbing hills. This is the Lester 1519. It featured an 8 fin impeller with the big bearing housing. Generally fitted to the '74 - '78 400 / 440 CID engines. Slow water / high volume. This one may be the one Edelbrock copied.

Below are images of the 1352 with CAST IRON impeller ... they do exist.

(IMG:http://i239.photobucket.com/albums/ff312/professor914/chry1.jpg)

(IMG:http://i239.photobucket.com/albums/ff312/professor914/chry.jpg)

I can obtain and supply these pumps if you so desire.

Good luck!