Slant 6 and HA/GR ?

We are trying to start a new HA/GR team and I ask this on another thread but dont have an answer. We ar leaning to running a slant 6 and would like to make shure its leagle to run one. Both 170 and 225 were in production pre 62. Now do we have to run a block with #s pre 62 os or can we run say a 1968 225 since they are the same as pre 62s. Thanks

 

Better PM Ryan on that one.

 

bttt

 

pm'ed ya

 

If there is an answer, please put it up on the main board... inquiring minds wanna know!

PS, early models were aluminum blocks, (spam) I'm trying to find one... (spam).

Jay

 

Yea we are looking for one of the early alum. blocks as well but we will run what we can find CHEEP.

 

yea i would like to know. before 62? or 62 and before? and how about if you ran an A engine could you get something extra? or maybe run two As?

 

give us some more info ryan!

 

Theres an aluminum block on Epay right now but I don't think it will go for cheap.


http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=8025251571&rd=1&sspagename=STRK%3AMEWA%3AIT&rd=1

 

So what does HA/GR stand for?

 

H.A.M.B. Gas Rail

 

Just my $.02, but it should be a casting # before '62. Just because they made it before doesn't mean they didn't make changes to the design and function of the motor.

 

The slant motor was in production in 1960, and it was not an aluminum block. Chrysler only made about 50,000 of these before they went to the cast iron blocks. The aluminum blocks are not really good for racing applications as they were prone to not sealing to the head and porosity was still a problem.

The 225 and the 170 are the same blocks, the only difference was the stroke of the motor. 225 is a long stroke motor and the 170 is one inch shorter on the stroke.

As far as any changes to the motor, none except to the heads and they changed to hyd cams in the late 70's. They also changed from a steel crank to a cast crank with the hyd. motors.

 

come on....sam....ryan...anyone? i'd like to know this as well...

 

there is an aluminum one on the bay right know, its in the carolinas.

 

I like the sound of this!
Not that I have anything against the flatheads, I have never built one and would not know where to start. Now the slants, I have been into them for 8 years.
I really think this is the way to go, overheads against overheads and flatheads against flatheads, eights and sixes.

 

Mopar or NO CAR!
id still like to run my 235, just cause I like chevs

 

Run the Chevy! I would love to see several different motors on these things.
In fact, I know it would not fit the cl***, but I thought about running a double engine dragster.

 

we could run the 235 in the second car

 

awesome. i'll see what parts are in the shed, maybe i'll talk him out of the built motor, take off the 4bbl, run it!

 

Works for me.

 

here is a link to the specs for slant sixes. 68-newer looks to be the cutoff, according to the rules, as 67-older are all pretty much the same, beter cranks too!
http://www.slantsix.org/articles/parts-matrix/jpg.htm
shows a 4 bbl for 60-62 225 as optional factory equipment.

 

REJ,

"The 225 and the 170 are the same blocks, the only difference was the stroke of the motor. 225 is a long stroke motor and the 170 is one inch shorter on the stroke."


Gotta call ya on that one. I think the BORE is the same, but the block is shorter. Hence why the 225 is an "RG" and a 170 is a "G".

But that's nitpicky... BRING ON THE SLANTS!!!!

And, since they were intro'd in 1960, would a "Hyper Pak" be a legal combo?

PS, avoid anything post 74 (maybe was 76)... they went to cast cranks. And post 84 were hydralic lifters, YUK!!!


Jay

 

Sixgunner, the blocks are the same length, but they are shorter on deck height, therefore the 170 has a one inch shorter stroke. If they were the same height, the 170 would probably be a 4-1 compression ratio with the piston that far down in the hole.

All pre-68 blocks are the same, steel cranks and the block was cast a little bit thicker. After that they went to cast cranks, lightened the block up a little bit, went to hyd cam in the late 70's early 80's. The late model heads have a little bit better combustion chamber than the early ones.

 

Speaking of the hyper pak manifold, read the rules, no four barrels.

 

Actually, the rules don't say no 4bbls. They say "Era specific carbs only, stock appearing- no modern Holley,Edelbrock, or other aftermarket carbs." Perhaps guidance on what "Era specific" means would be useful, but one of the first three HA/GRs runs an early Ford/Holley 4bbl.