Originally Posted by paull
XD had the black block. Also available was the Pillow block (2 bolt)
XE had the black block. Also available was the so called NASCAR block. Casting number XE192540 (if memory serves me). These were all 4 bolts.
Both Pillow and NASCAR had the bulges (pillows) on the side of the blocks. Both had larger sleeve thickness but XE's suffered from core shift.
This is getting tedious....
What do you guys call a "NASCAR" block? how is it identified as a "NASCAR" block??
"Pillow blocks" were std cleveland blocks with extra water capacity via "pillows" on the side, NO thicker bores or 4 bolts, just std 2 bolt blocks that held a bit more coolant. They were randomly disposed of through out the entire cleveland range as a way of getting rid of these experimental blocks.
They WERE NOT "NASCAR" blocks!!!
XE code blocks were made with thicker pan rails and "thicker" bore walls but ive never seen one (ive seen about 15 now) or ever heard of one with pillows!!!
These blocks were originally manufactured as mototrsport castings however the ones found fitted to Australian vehicles failed the stability check for export to the US.
That doesn't mean most aren't good blocks for hotting though, all it means is they werent suitable for shipment to the US.
I also believe some of the good XE code blocks have found their way back here via importation as second hand blocks..