[70pontiaction]

I currently have (two) 9792506 Service Replacement RAII/RAIV blocks.

The first has the as-cast 9792506, stamped SR862xx and has a casting date of C118.

The second is cast 979, ground and stamped 2506, stamped SR892xx and has a casting date of F179.

[PurelyGTO68]

Originally Posted by 70pontiaction

I currently have (two) 9792506 Service Replacement RAII/RAIV blocks.

The first has the as-cast 9792506, stamped SR862xx and has a casting date of C118.

The second is cast 979, ground and stamped 2506, stamped SR892xx and has a casting date of F179.

Are you able to identify any differences between those two blocks? (Besides the cast number...)

If the freeze plugs are removed, can you measure the cylinder wall or block thickness and see if one is thinner than the other? I am curious why the as cast 2506 blocks were discontinued mid way through the RAII production run. Comparing the two blocks you have may provide some clues.

[NOPLNDN]

Sorry for the wait.Almost a year....Here is a copy of my billing card.

[BigJoel]

Ram Air 2 heads on e-bay
http://www.ebay.com/itm/181967258588?

[Baron Von Zeppelin]

Originally Posted by NOPLNDN

Sorry for the wait.Almost a year....Here is a copy of my billing card.

This will be Car #19 on updated list
Here is the content.


Hardtop - 4 speed
G2 = April Gold & Black V.Top / 23 = Black Buckets
Baltimore Plant
Invoice # 887638 / Invoice Date 7-17-1968
06-119 Dix Cadillac-Pontiac, State College, PA
$4492.21

347 - Ram Air Deuce
358 - 4spd M21
361 - STT HD Posi
37S - 4.33 Axle
382 - AM Radio
394 - Stereo Tape Player [8-track]
414 - HideAway Headlights
424 - Remote Mirror
444 - Rally Gauges & In-Dash Tach
472 - Console
501 - Power Steering
532 - SoftRay Windshield
71-72 PC - Redlines G70x14
742 - operation code for #754 shoulder belts
754 - Shoulder Belts
[ also equipped with standard Dog-Dish / Poverty Caps ]