Help on 360 Super Stock

parkay2468 · 12-22-2014, 07:43 PM

Got a shortblock with a car I bought.Was told it was legal.Car was a J auto.Trying to sell it and when I gave him the piston part number it is not legal for J he said.Piston number is P4876978.Anyone know if it is legal for any Superstock class in a Duster.Thanks

Rsmith38 · 12-22-2014, 08:57 PM

According to Google, Your piston is a Mopar Performance .030 over with a 10.7 compression ratio. From reading my old rulebook, stock compression must be maintained - I'd guess that piston was a cheater short block!

Disclaimer - I don't run SS!

Jim Hanig · 12-22-2014, 09:04 PM

Quote:

Originally Posted by parkay2468

Got a shortblock with a car I bought.Was told it was legal.Car was a J auto.Trying to sell it and when I gave him the piston part number it is not legal for J he said.Piston number is P4876978.Anyone know if it is legal for any Superstock class in a Duster.Thanks

You can run any piston , flat top with 2 valve relief or if its dished mush have the correct volume for that piston. go to engine blueprints for car and engine.

GTX JOHN · 12-23-2014, 08:22 AM

360 piston all have a dish and around 8.7 to 9.2 Compression depending upon year and Horsepower claimed.

parkay2468 · 12-23-2014, 08:32 AM

Well I guess I have been taken.Along with the weightbox deal and the other parts that aren't right.The car is nice though.Thanks for the info.

George Mirza · 12-23-2014, 09:23 AM

What did you buy and what would you like to do with it? 360's were only available in 74-76 Dusters.

GTX JOHN · 12-23-2014, 08:10 PM

360 is also available in most medium and full size Mopars from mid 70's to 1980 or so.
Also trucks and some full size cars from early 70's. We have race several of
them in both cars and trucks.

12-22-2014, 07:43 PM	#1
parkay2468 Junior Member Join Date: May 2013 Posts: 19 Likes: 0 Liked 0 Times in 0 Posts	Help on 360 Super Stock Got a shortblock with a car I bought.Was told it was legal.Car was a J auto.Trying to sell it and when I gave him the piston part number it is not legal for J he said.Piston number is P4876978.Anyone know if it is legal for any Superstock class in a Duster.Thanks

12-22-2014, 08:57 PM	#2
Rsmith38 Member Join Date: Mar 2011 Posts: 186 Likes: 0 Liked 28 Times in 15 Posts	Re: Help on 360 Super Stock According to Google, Your piston is a Mopar Performance .030 over with a 10.7 compression ratio. From reading my old rulebook, stock compression must be maintained - I'd guess that piston was a cheater short block! Disclaimer - I don't run SS!

12-23-2014, 08:22 AM	#4
GTX JOHN VIP Member Join Date: Jun 2009 Location: Boulder City, Nevada 89005 Posts: 2,736 Likes: 2,808 Liked 2,487 Times in 698 Posts	Re: Help on 360 Super Stock 360 piston all have a dish and around 8.7 to 9.2 Compression depending upon year and Horsepower claimed. __________________ John Irving 741 Stock 741 Super Stock

12-23-2014, 08:32 AM	#5
parkay2468 Junior Member Join Date: May 2013 Posts: 19 Likes: 0 Liked 0 Times in 0 Posts	Re: Help on 360 Super Stock Well I guess I have been taken.Along with the weightbox deal and the other parts that aren't right.The car is nice though.Thanks for the info.

12-23-2014, 09:23 AM	#6
George Mirza Senior Member Join Date: Jan 2002 Location: North Attleborough Ma. Posts: 522 Likes: 0 Liked 0 Times in 0 Posts	Re: Help on 360 Super Stock What did you buy and what would you like to do with it? 360's were only available in 74-76 Dusters.

12-23-2014, 08:10 PM	#7
GTX JOHN VIP Member Join Date: Jun 2009 Location: Boulder City, Nevada 89005 Posts: 2,736 Likes: 2,808 Liked 2,487 Times in 698 Posts	Re: Help on 360 Super Stock 360 is also available in most medium and full size Mopars from mid 70's to 1980 or so. Also trucks and some full size cars from early 70's. We have race several of them in both cars and trucks. __________________ John Irving 741 Stock 741 Super Stock