[chimo22]

I have a '70 YZ code motor - H219
#12 heads - H089 (both)
Intake 9799068 - H079
Exhuast Manifolds were to said to be original - cant get numbers yet.

So all appears to say RAM III. However, the block stamp is 9799915. The 4 has been removed and a 5 stamped. Given the heads and intake numbers would this be a RA III or RA IV?

[The Boss]

It's a RA III.

[Kenth]

Didn´t the #9799915 blocks recieve forged pistons?

That´s cool, a 1970 RAIII with forged pistons?

I have a friend here in Sweden with a 1970 RAIII Judge with M/T, his cars original block were also #979991(5).......i´ll have to ask him ´bout the pistons....

[SWEETJUDGE]

IVs have round ports, EASY visual if the center ports shape is STRAIGHT DOWN not to a V like a "D" port they are round

key head numbers 96 68 ram air II
722 69 RA IVs
614 70 RA IVs
197 71 HO ROUND PORT
7F3 72 (i think) round port
16 74 SUPERDUTY

BOSS i PM you contact me asap!@!!!!!!

[SWEETJUDGE]

all ram air engines have 4 bolt mains & forged pistons

[my69gto]

All IV's have 4 bolt mains and forged pistons... Pretty sure all RA3s had cast pistons. 69 RA3s have 2 bolt mains...

[Uncle Judge]

Originally Posted by chimo22

I have a '70 YZ code motor - H219
#12 heads - H089 (both)
Intake 9799068 - H079
Exhuast Manifolds were to said to be original - cant get numbers yet.

So all appears to say RAM III. However, the block stamp is 9799915. The 4 has been removed and a 5 stamped. Given the heads and intake numbers would this be a RA III or RA IV?

The Ram Air III and IV motor blocks for 1970 all had 4 bolt main caps. The casting number on the RAIII was 9799914. On the RAIV they simply ground off the last digit (4) and stamped in a 5. I have seen a number of RAIII blocks with the 9799915 part number. The internals are determined by the two letter engine code rather than the casting number on the blocks. A WS or YZ is a RAIII and WW or XP is a RAIV.

[Ram4king]

Uncle,I believe what you say is mostly true but the 914 blocks had 2 bolt mains and the 915's had 4 bolt mains. Thats the only difference in them. ram III's had cast pistons and iv's had forged. All YS and WT motors are 2 bolt 914's also.

[Tellyshavilli]

Originally Posted by Ram4king

Uncle,I believe what you say is mostly true but the 914 blocks had 2 bolt mains and the 915's had 4 bolt mains. Thats the only difference in them. ram III's had cast pistons and iv's had forged. All YS and WT motors are 2 bolt 914's also.

All ws and yz 914 blocks are 4 bolt main. Reinforcing uncle skunk

[johnta1]

Uncle skunk is correct.
I have a WS engine from a 70 Judge that has the 4 ground off and a 5 stamped on it.
It had cast pistons. And the 068 cam.
J029 date code on block.

[Tellyshavilli]

Originally Posted by johnta1

Uncle skunk is correct.
I have a WS engine from a 70 Judge that has the 4 ground off and a 5 stamped on it.
It had cast pistons. And the 068 cam.
J029 date code on block.

All Rise For The Skunk.

[chimo22]

Thanks for all the info guys, I appreciate it.

[johnta1]

Uncle Judge, my apologies.

It was late last night I guess.

Uncle Judge, is still right.

[Uncle Judge]

Originally Posted by Tellyshavilli

All ws and yz 914 blocks are 4 bolt main. Reinforcing uncle skunk

I hit a skunk on the way home tonight. Are you telling me that you could smell it?

[Uprmich]

What about 68 071 WS blocks? 2 bolt or 4? I know the 2506 would be 4bolt.

[Tellyshavilli]

Originally Posted by Uncle Judge

I hit a skunk on the way home tonight. Are you telling me that you could smell it?

I hope it wasn't with that Liberty blue 4speed . It would be forever tarnished

[Uncle Judge]

Originally Posted by Uprmich

What about 68 071 WS blocks? 2 bolt or 4? I know the 2506 would be 4bolt.

2 bolt on the 68 WS.

[Uncle Judge]

Originally Posted by Tellyshavilli

I hope it wasn't with that Liberty blue 4speed . It would be forever tarnished

Not in this weather. We just had over a foot of snow this past week. Winter and salt are not friends of Muscle cars!

[Tellyshavilli]

Originally Posted by Uncle Judge

Not in this weather. We just had over a foot of snow this past week. Winter and salt are not friends of Muscle cars!

You would think a skunk would be easy to spot in all that snow

[roundportponchos]

I've got a #15 WS block, orig. & unstamped. Uncle Judge is correct on these. Watch out on the road for the skunks, as there is alot of smelly creatures out there.
I believe raivking has seen an early 2 bolt WS, who would stamp a 2 bolt with WS? Maybe the early blocks were like the 69 RAIII 2 bolts. He's been around alot of Pontiacs parts, so he'd spot a fake!