Please, I need Flexplate help!
Thread Starter
Burning Brakes
Joined: Aug 2006
Posts: 878
Likes: 2
From: BC
Please, I need Flexplate help!
Please I am in need of some help here! - I've got a Scat Rotating Assembly on order from Jegs.
Its a 2pc Rear Seal, Externally Ballanced 383 setup. I've only just realised that its most likely going to come with a 168 tooth flexplate!
I've had a look around Jegs and Scat's cat and I cannot find a 153 Externally balanced flexplate for a 1985 2 pc rear seal engine?!
HELP?! Where do I go from here??
Its a 2pc Rear Seal, Externally Ballanced 383 setup. I've only just realised that its most likely going to come with a 168 tooth flexplate!
I've had a look around Jegs and Scat's cat and I cannot find a 153 Externally balanced flexplate for a 1985 2 pc rear seal engine?!
HELP?! Where do I go from here??
Race Director
Joined: Feb 2004
Posts: 12,518
Likes: 19
Please I am in need of some help here! - I've got a Scat Rotating Assembly on order from Jegs.
Its a 2pc Rear Seal, Externally Ballanced 383 setup. I've only just realised that its most likely going to come with a 168 tooth flexplate!
I've had a look around Jegs and Scat's cat and I cannot find a 153 Externally balanced flexplate for a 1985 2 pc rear seal engine?!
HELP?! Where do I go from here??
Its a 2pc Rear Seal, Externally Ballanced 383 setup. I've only just realised that its most likely going to come with a 168 tooth flexplate!
I've had a look around Jegs and Scat's cat and I cannot find a 153 Externally balanced flexplate for a 1985 2 pc rear seal engine?!
HELP?! Where do I go from here??
Thread Starter
Burning Brakes
Joined: Aug 2006
Posts: 878
Likes: 2
From: BC
would this need to be done by the machine shop? Here we have engine builders and machine shops that do balancing etc its not all done in house.
I can get steel welded on no problem by the engine builder but I would have thought that it woul need to be added in specific places for ballencing?
I can get steel welded on no problem by the engine builder but I would have thought that it woul need to be added in specific places for ballencing?
Race Director
Joined: Feb 2004
Posts: 12,518
Likes: 19
would this need to be done by the machine shop? Here we have engine builders and machine shops that do balancing etc its not all done in house.
I can get steel welded on no problem by the engine builder but I would have thought that it woul need to be added in specific places for ballencing?
I can get steel welded on no problem by the engine builder but I would have thought that it woul need to be added in specific places for ballencing?
Thread Starter
Burning Brakes
Joined: Aug 2006
Posts: 878
Likes: 2
From: BC
I'm sure that its going to need some clearancing with the cam anyway?
I was always intending to send the kit of to be re-balanced, I will just have to ask if they can externally balance an internally balanced flexplate. I hope its something that there familiar with.
Pete, your always so helpfull! -
ps, I'm in the market for a new torque converter. I would imagin that shipping is going to be the killer with doing a deal with yourself but if you want to price me something up in the 2200-2500ish stall then please feel free to PM me.
I was always intending to send the kit of to be re-balanced, I will just have to ask if they can externally balance an internally balanced flexplate. I hope its something that there familiar with.
Pete, your always so helpfull! -
ps, I'm in the market for a new torque converter. I would imagin that shipping is going to be the killer with doing a deal with yourself but if you want to price me something up in the 2200-2500ish stall then please feel free to PM me.
Race Director
Joined: Feb 2004
Posts: 12,518
Likes: 19
I'm sure that its going to need some clearancing with the cam anyway?
I was always intending to send the kit of to be re-balanced, I will just have to ask if they can externally balance an internally balanced flexplate. I hope its something that there familiar with.
Pete, your always so helpfull! -
ps, I'm in the market for a new torque converter. I would imagin that shipping is going to be the killer with doing a deal with yourself but if you want to price me something up in the 2200-2500ish stall then please feel free to PM me.
I was always intending to send the kit of to be re-balanced, I will just have to ask if they can externally balance an internally balanced flexplate. I hope its something that there familiar with.
Pete, your always so helpfull! -
ps, I'm in the market for a new torque converter. I would imagin that shipping is going to be the killer with doing a deal with yourself but if you want to price me something up in the 2200-2500ish stall then please feel free to PM me.
No worries.
I am about to make a 7 hour drive back home, so I will pm you tomorrow evening, if that is ok.
As far as shipping, I would only charge actual out of pocket. Hopefully, it is not too bad to jump over the pond.
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Simpler yet is to use a stock 168 tooth, 400 inches³, flex plate and change the nose housing on your starter. Just make sure your block has all three starter mounting bolt holes drilled and tapped before you install the engine.
RACE ON!!!
RACE ON!!!
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Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Look on the surface of the block that the starter bolts to. It either has two or it has three holes drilled and tapped for starter bolts. IF there are only two (unusual) you can drill and tap the third. It will be easier to to BEFORE the engine goes in, right Ralph?
RACE ON!!!
RACE ON!!!
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Great! Now, in order to use a 168 tooth flex plate in place of the 153 toother, all you have to do is either use a 400 or big block starter, or simply change the nose housing of your existing old style big Delco starter. There are after market mini starters that use the 153 tooth bolt holes but I am trying to help keep your expenses down. 
RACE ON!!!
RACE ON!!!
Le Mans Master
Joined: Aug 2000
Posts: 8,838
Likes: 31
From: Australia
GM cheaped out on the L31 Vortecs at least and only drilled for 168 tooth flywheel.
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Originally Posted by rodj
All the L98 and earlier blocks I have seen have 3 holes;
GM cheaped out on the L31 Vortecs at least and only drilled for 168 tooth flywheel.
GM cheaped out on the L31 Vortecs at least and only drilled for 168 tooth flywheel.
Originally Posted by dan_t
CFI-EFI most helpfull my friend!
RACE ON!!!
