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01-04-2021, 12:54 AM
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#1 |
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Registered User
Join Date: Mar 2008
Location: Lawndale, NC
Posts: 658
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5.3 to th400
Does anyone have a pic of how the flexplate spacer is supposed to mount? I have both a flat and a dishes flexplate. Also any "one better than the other " thoughts? I'd like to get this thing between the frame rails tomorrow
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1978 Scottsdale - celebrating 10 years of teaching me profanity 1990 Silverado - bought in Nov. 2016 and it's already catching up - Sold 1987 k5 blazer - sold... :\ seed money for the 81 1981 k20 4x4 - 5.3 swap in progress Events attended: Spring GOG 2011 Dale JR car show Summer 2012 Gathering at Tommys pickup parts |
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01-04-2021, 01:50 AM
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#2 |
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Post Whore
  
Join Date: May 2015
Location: Alabama
Posts: 14,670
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Re: 5.3 to th400
__________________
Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver |
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01-05-2021, 03:14 PM
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#3 |
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Registered User
Join Date: Mar 2008
Location: Lawndale, NC
Posts: 658
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Re: 5.3 to th400
Ok so I tried the diymetalfab way...I won't go as far as to call bs yet, maybe I missed something. For starts, carbine burs on that flywheel at 2500 rpm had little effect. Secondly, I followed this photo for reference on which direction the hole should be drilled. Even though I ended up having to use a titanium bit and waller out holes on the flywheel and they look a little more chewed-up than I'd like them they're still not lining up. After 2 days, 2 5.3 flywheels, and 30 bucks in bits, I'm thinking I'm gonna buy a pre drilled flywheel and turn these two into range targets.
__________________
1978 Scottsdale - celebrating 10 years of teaching me profanity 1990 Silverado - bought in Nov. 2016 and it's already catching up - Sold 1987 k5 blazer - sold... :\ seed money for the 81 1981 k20 4x4 - 5.3 swap in progress Events attended: Spring GOG 2011 Dale JR car show Summer 2012 Gathering at Tommys pickup parts |
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01-05-2021, 09:02 PM
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#4 |
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Moderator
Join Date: Jun 2017
Location: Cherryville, NC
Posts: 2,204
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Re: 5.3 to th400
Use the dished flexplate only...dish towards engine...spacer between flex plate and crank....
so from crank face, mount adaptor with convertor boss pointing backwards, then flex plate... It looks like you have the adaptor coming on from the convertor side not engine side...see second pic on DIY site... (Thanks mongo !) 
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Family and country before all others... 2006 Chevy Silverado (Daily Driver) 2012 Chevy Equinox 
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01-05-2021, 09:09 PM
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#5 |
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Registered User
Join Date: Mar 2008
Location: Lawndale, NC
Posts: 658
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Re: 5.3 to th400
That's a pic from their site. I just used it as reference as to which direction I should try to drill out the holes in.
__________________
1978 Scottsdale - celebrating 10 years of teaching me profanity 1990 Silverado - bought in Nov. 2016 and it's already catching up - Sold 1987 k5 blazer - sold... :\ seed money for the 81 1981 k20 4x4 - 5.3 swap in progress Events attended: Spring GOG 2011 Dale JR car show Summer 2012 Gathering at Tommys pickup parts |
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01-05-2021, 10:42 PM
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#6 |
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Moderator
Join Date: Jun 2017
Location: Cherryville, NC
Posts: 2,204
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Re: 5.3 to th400
The attached pic shows how the adaptor is installed...
__________________
Family and country before all others... 2006 Chevy Silverado (Daily Driver) 2012 Chevy Equinox
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01-06-2021, 12:49 AM
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#7 |
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Registered User
Join Date: Mar 2008
Location: Lawndale, NC
Posts: 658
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Re: 5.3 to th400
Yup both pics look right as far as the adapter goes. Unfortunately my issue now is the flexplate itself and trying to get it up to my own standards. Like I say I've drilled out two I wasng happy with going by their pics. Problem is, is that all the typical aftermarket suppliers of predrilled plates are on backorder. I might try little Joe's out in Denver, or maybe Crawley there in cherryville.... either way its luck up on one local or proceed with drill attempt #3.
__________________
1978 Scottsdale - celebrating 10 years of teaching me profanity 1990 Silverado - bought in Nov. 2016 and it's already catching up - Sold 1987 k5 blazer - sold... :\ seed money for the 81 1981 k20 4x4 - 5.3 swap in progress Events attended: Spring GOG 2011 Dale JR car show Summer 2012 Gathering at Tommys pickup parts |
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01-06-2021, 12:59 AM
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#8 |
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Post Whore
Join Date: May 2015
Location: Alabama
Posts: 14,670
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Re: 5.3 to th400
You may be better off o take it to a machine shop and let them do it..
__________________
Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver |
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01-06-2021, 08:46 AM
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#9 |
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Moderator
Join Date: Jun 2017
Location: Cherryville, NC
Posts: 2,204
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Re: 5.3 to th400
Ok...now I get what has you stuck....
I have to assume you are using a hand drill and burs or a drill bit itself to elongate the holes....slow work at best... Do you have access to a drill press? Last time I did one of these I predrilled where the center of the new hole would need to be located with a small drill bit then gradually opened up the hole until break thru was achieved, than used a dremel bit and grinding stone to finish it off....took maybe half an hour per hole.... If you dont have a drill press, a machine shop would be your best bet.... Good luck...
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Family and country before all others... 2006 Chevy Silverado (Daily Driver) 2012 Chevy Equinox
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