mopar crank

Bub Whitaker · 04-30-2008, 10:28 PM

Use the 318/340 cast cranks, they internal balance just fine especially with the new combined weight specs. Also take advantage of the fact that you can use 2.100" large journal chevy rods the proper length on these engines. This spec is .024 under chrysler spec and opens a new world of bearing selection that isn't offered for 340's. Also it gets rid of the rolled factory fillets that cause rod journals to crack, thats if your crank guy knows how to put nice radiuses on the sides. Also it pays to have the crank hardened / nitrided as you won't belive how much happier the bearings look after the abuse you guys subject them to! Also select your oil pans wisely.....

04-30-2008, 10:28 PM	#1
Bub Whitaker Member Join Date: Feb 2005 Location: Dayton, MD Posts: 222 Likes: 0 Liked 1 Time in 1 Post	Re: mopar crank Use the 318/340 cast cranks, they internal balance just fine especially with the new combined weight specs. Also take advantage of the fact that you can use 2.100" large journal chevy rods the proper length on these engines. This spec is .024 under chrysler spec and opens a new world of bearing selection that isn't offered for 340's. Also it gets rid of the rolled factory fillets that cause rod journals to crack, thats if your crank guy knows how to put nice radiuses on the sides. Also it pays to have the crank hardened / nitrided as you won't belive how much happier the bearings look after the abuse you guys subject them to! Also select your oil pans wisely..... Last edited by Bub Whitaker; 05-02-2008 at 09:32 PM.