How to Install & Shim a Flexplate on a Chevy 350/383 Stroker
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- Опубліковано 28 сер 2024
- We show how to correctly measure and shim a flexplate to bring the gap between the torque converter and flexplate between 1/8th of an inch and 3/8ths of an inch, on our 383 Stroked 1999 Chevy Suburban.
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Flexplate - www.summitraci...
Shims that were the right size - www.summitraci...
Shims that were the wrong size - www.summitraci...
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@brianleishman
@simplylong
Your close but you actually space the torque converter away from tight in the bellowing towards the flywheel 1/8 to 3/16 then whatever gap to flywheel u shim.
Hmm not sure I can picture it, any video references you can send us?
555-601080 is the correct dished style flexplate. As you found out the flat flexplate don’t work. Too much gap.
Thank you for the info, extremely helpful,.. I'll take one of thoes burban shirts
I'm working on learning how to silkscreen and writing a merch site now, and will definitely update when it's up!
Should the gaps be identical measurements? Mine are all different.
What flexplate (brand and part number) did you use for this? Is this 383 Externally or internally balanced? Did you do a flexplate mounting face to block dimension, and if so what was the dimension? I have questions because I'm doing this right now (same engine and trans) and am having my clearances too close.
The flexplate we used in linked to on Summit on the description, and it is internally balanced. I have no idea what the dimension part is, I basically just swapped the old flex plate with the new one plus the shims
Lube that shaft!
;)
Cool video. Thanks
So you dumped a stroker crank (what....I guess crank from a 400?) ..into the 350. OK. And you had no idea you might need flex plate shims. Wow!! Well....experience is a good but harsh teacher. Makes me wonder: some previous owner of my C20 did the 383 conversion and I wonder if I may end up with similar starter motor issues. I will say I've had NO issues until late...but I don't drive the truck often. My mechanic just installed a new high torque mini (to better clear the headers). He builds rods and mainly repairs vintage machines. I am sure he paid attention to start motor gear extension. So far no issues. I guess I need to wait for the other shoe to drop!!!
Yup basically hit the nail on the head, everyone learns from somewhere I suppose. But yeah, the crank is actually a Scat stroker crank for our 350 that the machine shop guy, who bored out our cylinders, picked out. Obviously we learned a ton from building the first time, so I'm feeling pretty confident about our second rebuild, hopefully the guy who built yours knew more than we did lol, so I wish you luck!
If you put any shims on a Chevrolet you are installing it incorrectly there's only 2 size flex plates and each one requires a different starter
So you're slimming your flex plate on the crank, and thats supposed to change the gap between the flexplate and torque converter.. Which bolt together.... I'm either really dumb or missing something.
You're just changing how far the torque converter gets pulled out of the transmission pump. The initial gap is the amount that the torque converter will be moving once it's bolted, which is why you want that initial gap to be correct. Otherwise it comes out too far and can slip out of the pump and break things
98-99 have different 4l60e. These engines came with a dished flexplate to mate with the converter if you go cheap and use a flat flexplate then shims are a must
Thanks for the video and tips. Cool shirt, the back is weird.
QR code shirt might be good for us to wear to track events and such, but yeah, could be weird to wear around randomly
Where can l get thise shim for my gmc envoy
Depending on your year, something like this might be what you're looking for www.ebay.com/itm/392882968844?hash=item5b79a6590c%3Ag%3AcbAAAOSweHZfGaDa&fits=Year%3A2002%7CModel%3AEnvoy+XL%7CMake%3AGMC
Did you forget to add the correct counter weight?
Not 100% sure, I'm pretty sure when I was rebuilding it into the 383, the machinist balanced everything so that I wouldn't need the counter weight on the flexplate, but I could be incorrect. Not sure how much I'd be able to notice if that's incorrect but the engine has no vibration issues that I can tell, so I've just been rolling with it
@@VeryGoodGarage crank just breaks one day
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