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another stroker 340 question on balancing. #1743474 01/31/15 08:32 PM 01/31/15 08:32 PM
Joined: Feb 2003 Posts: 3,691 MO C cdp OP master
cdp OP master C Joined: Feb 2003 Posts: 3,691 MO	It appears the stroker is an eagle forged crank, standard eagle rods, and wiseco pistons. I've noticed the offered balanced and unbalanced kits. I don't see any mallory metal or specific machining for balancing, for a street car, should I worry about taking it to a shop and having it balanced, or assume that as a kit it should be fine. Short block is already assembled, but I'm taking it down to check everything for clearances.

Re: another stroker 340 question on balancing. [Re: cdp] #1743475 01/31/15 08:46 PM 01/31/15 08:46 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Are the OD of the counter weights turned down.. if you dont see that or any other things that show you its been balanced then YES take it to a shop for balancing EDIT Also the the Mallory/heavy metal to be installed properly it should be installed from the side of the counter weight... I have seen some installed on the face and tacked in along with a press fit but that can still fly out with revs Last edited by MR_P_BODY; 01/31/15 09:39 PM.

Re: another stroker 340 question on balancing. [Re: cdp] #1743476 01/31/15 10:48 PM 01/31/15 10:48 PM
Joined: Nov 2004 Posts: 892 USA K krw71ragtop super stock
krw71ragtop super stock K Joined: Nov 2004 Posts: 892 USA	Quote: It appears the stroker is an eagle forged crank, standard eagle rods, and wiseco pistons. I've noticed the offered balanced and unbalanced kits. I don't see any mallory metal or specific machining for balancing, for a street car, should I worry about taking it to a shop and having it balanced, or assume that as a kit it should be fine. Short block is already assembled, but I'm taking it down to check everything for clearances. The first stroker kit I purchased was a pre balanced kit. Bolted it together and installed in the car. First trip down the road it buzzed the rear view mirror so bad you couldn't see anything in it. I purchased a 408 that was just bolted together and not been run. Guess what ? I tor it down and had it checked for balance and the guy that does my balancing said the motor was way out of balance. I just checked the gap on the rings and there was .003" gap in the bottom rings. I also only had .040" piston to valve clearance. Some people just bolt them together and run it and hope for the best. I don't trust anybody and I check all my motors. It will be a lot easier to balance it now and a lot less work later

Re: another stroker 340 question on balancing. [Re: krw71ragtop] #1743477 02/01/15 04:04 AM 02/01/15 04:04 AM
Joined: Jan 2003 Posts: 27,490 So Cal autoxcuda Too Many Posts
autoxcuda Too Many Posts Joined: Jan 2003 Posts: 27,490 So Cal	Quote: Quote: It appears the stroker is an eagle forged crank, standard eagle rods, and wiseco pistons. I've noticed the offered balanced and unbalanced kits. I don't see any mallory metal or specific machining for balancing, for a street car, should I worry about taking it to a shop and having it balanced, or assume that as a kit it should be fine. Short block is already assembled, but I'm taking it down to check everything for clearances. The first stroker kit I purchased was a pre balanced kit. Bolted it together and installed in the car. First trip down the road it buzzed the rear view mirror so bad you couldn't see anything in it. I purchased a 408 that was just bolted together and not been run. Guess what ? I tor it down and had it checked for balance and the guy that does my balancing said the motor was way out of balance. I just checked the gap on the rings and there was .003" gap in the bottom rings. I also only had .040" piston to valve clearance. Some people just bolt them together and run it and hope for the best. I don't trust anybody and I check all my motors. It will be a lot easier to balance it now and a lot less work later Who's pre balanced kit was that?

Re: another stroker 340 question on balancing. [Re: autoxcuda] #1743478 02/01/15 12:16 PM 02/01/15 12:16 PM
Joined: Oct 2003 Posts: 11,689 W. Kentucky justinp61 I Live Here
justinp61 I Live Here Joined: Oct 2003 Posts: 11,689 W. Kentucky	Unless it's a stock type rebuild I have them all balanced. IMO it's just part of building a performance engine, like measuring everything for proper clearances.

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