72 LT-1 engine rebuild encountered a few questions

[Joe L.]

Re: 72 LT-1 engine rebuild encountered a few questions

So I called and verified (car is in Maine while apart I'm in pa and have been running back and forth for the build)
Water pump number is 3991399. H261 with the thicker output shaft the pump that was on before was incorrect and different height

balancer pulley 3858533 BJ
water pump 3991423 BW

the balancer is new and pictured here it's dimensions are correct I'm wondering if the shaft on the crank part is different?

Robert------


I don't see a snout on this balancer and I don't understand that, AT ALL.

[Robert D.]

Re: 72 LT-1 engine rebuild encountered a few questions

Robert------


I don't see a snout on this balancer and I don't understand that, AT ALL.

Sorry maybe bad jargon... thank you for the help

[Joe L.]

[Robert D.]

Re: 72 LT-1 engine rebuild encountered a few questions

Unless I’m missing something , that snout does not appear long enough to me. Please show a side view showing how far the snout extends beyond the rear of the balancer. In your original pics I could not see that it extended at all

Photos of balancer are from when I purchased it again my car is in Maine and I'm in pa. I will have my brother go and take some pictures and measurements. It is believed the balancer is "home" also I believe the shaft extends almost or approximately flush with the rear of the balancer or about 1 5/8" from face to butt end. I came back to pa Sunday after assembling the motor over the weekend. I'll update when I have more info.

If it is supposed to extend beyond the rear of the damper that may be the answer. I just looked up the specs for 3942538
And it appears it should also be 1-3/4" thick? I think this may be the problem and answer.

is it confirmed that my pullies are correct?

thank you again
Robert