1970 3963512 Block Strange One

[nuch_ss396]

[ QUOTE ]
.....They wanted the big engine to pull a camper.... .

[/ QUOTE ]

OK, silly question time. Did the full sized cars come with
a towing package if ordered? If so, would that possibly
incorporate a 4-bolt block? I've never heard of this before
myself, but you never know.

Steve

[olredalert]

Steve,,,Definetly had low domes, if they had any domes at all. I remember thinking that a guy could run just about any gas with those pistons. Pacemaker had there own engine program of sorts. I believe they built them to have as much torque as possible while still using regular gas. These engines were painted metallic green and were prominently labelled as "Pacemaker 427s"........Bill S

[3macs1]

Steve:
The domes on the engine I just sold were 10.25 Hp pistons .
Interesting question on the towing package. The car definately had a GM installed hitch and wiring. There was a trans cooler also but I don't know if that was factory installed.
One thing for sure I will always drop the pan on any 512 block I run into in the future.

[nuch_ss396]

Joe,

No real need to drop the pan. Just look at the oil filter
boss ( side ) to see if it has the external oil cooling
attachment provision. All 4-bolt blocks had this.

Steve

[bigchevydaddy]

Are you sure this was the original engine? If it was a demo, it might have had the block replaced under warranty, and they replaced it with a 4-bolt. Years ago I lucked into a 512-casting block that came out of a "totally original" Caprice wagon. Turned out that the block had been replaced by the dealer early in its life. It had a CE stamping. All the internals were low-horse 427, but the CE block had evidently been in-stock in the parts dept. and that's what they swapped in as a replacement.

BCD

[3macs1]

Definately the original engine and it was not CE. That much I did check since I still have a bunch of big blocks and I wanted to make sure he was not getting the original 454 out of my 70 chevelle.Which is buried in the pile also.

[Kim_Howie]

I heard that alot of big wagons had 4-bolt blocks in them???