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Re: 440 6PK MOTOR [Re: Cab_Burge] #1506068 09/23/13 08:44 PM 09/23/13 08:44 PM
Joined: Aug 2009 Posts: 1,319 Ohio J jlatessa pro stock
jlatessa pro stock J Joined: Aug 2009 Posts: 1,319 Ohio	You may be right Cab, We have yet to mate up engine and trans. I know it bolts fine to both the crank and converter, what sort of problems are people seeing? I have a 6 bolt steel crank and a hi-po 383 converter which then needed the special flex plate. We're too far into finishing our car to reconsider internal balancing. What problems should I look for going ahead?? Should we just put the weights on the converter and go stock flex plate? Thanks, Joe

Re: 440 6PK MOTOR [Re: moon] #1506069 09/23/13 11:22 PM 09/23/13 11:22 PM
Joined: Jan 2007 Posts: 136 AZ, USA moon OP member
moon OP member Joined: Jan 2007 Posts: 136 AZ, USA	Yes it is a true 6pk motor, with a steel crank. Where do you weld the weights on the convertor and how much weight? 1970 440 Last edited by moon; 09/23/13 11:26 PM.

Re: 440 6PK MOTOR [Re: moon] #1506070 09/24/13 02:17 AM 09/24/13 02:17 AM
Joined: Jan 2003 Posts: 17,529 Las Vegas, NV 6bblgt I Live Here
6bblgt I Live Here Joined: Jan 2003 Posts: 17,529 Las Vegas, NV	Quote: Yes it is a true 6pk motor, with a steel crank. Where do you weld the weights on the convertor and how much weight? 1970 440 One of the Direct Connection Engine Manuals has a diagram for the weights.

Re: 440 6PK MOTOR [Re: 6bblgt] #1506071 09/24/13 09:32 AM 09/24/13 09:32 AM
Joined: Aug 2009 Posts: 1,319 Ohio J jlatessa pro stock
jlatessa pro stock J Joined: Aug 2009 Posts: 1,319 Ohio	And Mancini sells a weight kit with templates for positioning. I'm still undecided, need to hear more on the problems...Cab? Joe

Re: 440 6PK MOTOR [Re: jlatessa] #1506072 09/25/13 11:55 AM 09/25/13 11:55 AM
Joined: Aug 2009 Posts: 1,319 Ohio J jlatessa pro stock
jlatessa pro stock J Joined: Aug 2009 Posts: 1,319 Ohio	Bump

Re: 440 6PK MOTOR [Re: jlatessa] #1506073 09/25/13 12:33 PM 09/25/13 12:33 PM
Joined: Jan 2003 Posts: 16,376 D dogdays I Live Here
dogdays I Live Here D Joined: Jan 2003 Posts: 16,376	The three most dangerous words on the Internet: I have heard....... If you already have the B&M flexplate, for the love of Pete, USE IT. The most important thing is where it bolts to the crank, there I'd not do any "finishing" of holes. But where the plate bolts to the converter, so what if you have to move a hole a little? And where is the FIRSTHAND information that this problem even exists? B&M is a reputable company that has been serving the high performance market for decades. R.

Re: 440 6PK MOTOR [Re: jlatessa] #1506074 09/25/13 12:40 PM 09/25/13 12:40 PM
Joined: Jan 2003 Posts: 75,128 A Banana Republic near you. JohnRR I Win
JohnRR I Win Joined: Jan 2003 Posts: 75,128 A Banana Republic near you.	Quote: You may be right Cab, We have yet to mate up engine and trans. I know it bolts fine to both the crank and converter, what sort of problems are people seeing? I have a 6 bolt steel crank and a hi-po 383 converter which then needed the special flex plate. We're too far into finishing our car to reconsider internal balancing. What problems should I look for going ahead?? Should we just put the weights on the converter and go stock flex plate? Thanks, Joe Bolt holes not lining up is the problem that has been reported. Ad dog days said the most important part is bolting it to the crank, those holes have to match because if they don't the weighting will not be in the proper place. Drop it on the convertor and find out which holes line up then mark the plate and the converter so you know where to start. The one issue I can see with a solid flexplate is a gross misalignment between the engine and the trans. Just like a manual trans bellhousing the runout can be an issue which is why the factory used a flex plate and not a more solid plate.

Re: 440 6PK MOTOR [Re: JohnRR] #1506075 09/25/13 12:51 PM 09/25/13 12:51 PM
Joined: Aug 2009 Posts: 1,319 Ohio J jlatessa pro stock
jlatessa pro stock J Joined: Aug 2009 Posts: 1,319 Ohio	Thanks for the input guys, my bolt holes line up without any interference, so I'm going with the B&M plate. I will check concentricity too. I have marked the plate/converter for easier assembly. One thing I have always wondered is if the flex plate is there for thrust movement differential fore and aft on accel/decel between the engine and trans?? Joe

Re: 440 6PK MOTOR [Re: jlatessa] #1506076 09/25/13 02:07 PM 09/25/13 02:07 PM
Joined: Jan 2003 Posts: 9,436 Blair County,PA 62maxwgn master
62maxwgn master Joined: Jan 2003 Posts: 9,436 Blair County,PA	Quote: Thanks for the input guys, my bolt holes line up without any interference, so I'm going with the B&M plate. I will check concentricity too. I have marked the plate/converter for easier assembly. One thing I have always wondered is if the flex plate is there for thrust movement differential fore and aft on accel/decel between the engine and trans?? Joe No,that's why the plate is not flat.

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