I ordered my street twin today(finally) and when I talked to the sales person I told her I assumed that I needed the zero balance street twin because my stroker is internally balanced and she didnt really give me a warm fuzzy when she said yes. Did I order the right one or do I need to change it quick? thankx

 

You order the right thing. I had to get mine zero balanced also since my 355 is internally balanced.

 

hey man your right up the street from me..i am in wilmington NC and run at coastal plains.. or used to about a year ago..all our cars have been down for mods this year..4 vettes..always something breaking or being modded..

I have a street twin also that just cam in.. have you been running your car with another clutch/flywheel assembly? if so you need to remove your old clutch assembly..and have the new one balanced identical.. simply zero balancing a clutch assembly can sometimes yield vibrations, but if your old setup ran smooth throughout the RPM band, then blancing the new street twin setup same as your old setup will give you the same feel and balance as was in there.. most shops can do this very cheap.

My father and I are actually heading up to automasters in raleight to Jeff Creeches on wednesday to dynotune a new solid roller setup in his 96 LT4. and then the following sunday heading either to fayetteville or Jville to make some passes before the breathless performance shootout in Bradenton. if your gonna be around or at the track on the 28th, would be cool to link up!

shoot me an email!

Edit:just saw your sig stating motor was being built... if your motor has not been build yet.... i would have the shop balance the rotating assembly with the entuire clutch and flywheel assembly installed and balancer up front bolted to the crank..this will ensure a perfect balance and a silky smooth feel all the way through the rm plus it will make increase the life of the bearings and power the gnine can make!

lcvette1@aol.com

 

My motor is almost done just waiting to get the tools in to measure for the correct length pushrod and for the intake to be gasket matched so its too late for that unfortunately. Would it be a good idea to have the street twin flywheel balnced to the oem flywheel? I cant do the whole clutch assembly cause I already trashed it.

 

that all depends.... the stock motor is not internally balanced as some think.. it is in the front and uses a neutral balanced damner/balancer, but the flywheel is counterweighted to bring the rotating assembly into balance.. so depending on exactly how the machine shop who built your engine balanced it...ie with the stock flywheel on...if this is how they balanced it, then yes duplicate balncing on the new flywheel compared to the old flywheel will bring you very close to what you need.. at this point, you need to find out exactly what was done for balancing.. if they balanced it with a zero balanced flywheel they had at the shop on instructions from you to "internally balance the rotating assembly", then you should be alright with a "zero balance flywheel and clutch assembly" I would also contact Mcleod and speak with I believe his name is Gene.. the email i was instructed to use is rroberts@mcleodind.com... make sure you talk to their guru..he is very sharp and can instruct you on the best course of action to take to be where you need to be! be sure to have ALL information about your engine and balance from your machine shop handy because they will be asking for it! you wanna be able to hammer out answers as they ask you! good luck and keep us posted!

Chris