oz59
Contributor
Posts: 138
Loc: Brisbane Aistralia
Reg: 06-17-08
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07-21-12 04:58 PM - Post#2250702
I,m swapping my tall deck454 out and putting a 409 425 hp in my delivery, can i use the flex plate and convertor and my t 400 with out any dramas, thanks in advance for any info.
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BG64SS409
Contributor
Posts: 568
Loc: Edmonton,Alberta Canada
Reg: 05-03-08
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07-21-12 05:46 PM - Post#2250716
In response to oz59
I'm not sure... I know the shop that rebuilt my PG threw my convertor in the core bin. The convertor they gave me would not fit my flex plate and they had a bear of a time getting a replacement convertor... nearly got ugly.
Check out 348-409.com... the will be able to help for sure..
Brett
64SS Impala,Original documented numbers matching 1 of 36 Canadian made SS409 340hp/PG
2013 Callaway Suburban, supercharged 450hp |
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 bowtieollie
ChevyTalk Subject Matter Expert
Posts: 20885
Loc: See the USA in your Chevr...
Reg: 12-06-99
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07-22-12 05:35 PM - Post#2250973
In response to oz59
Hello Oz,
Nope.
You cannot use the flexplate - since you had a 454.
These engines were externally balanced.
The 409 is internally balanced, so you will need a flexplate for a Chevy V8 other than a 400 SB o 454 BB.
The torque converter will be fine.
Bowtieollie
Chevytalk.com Moderator |
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models916
Frequent Contributor
Posts: 1879
Age: 62
Loc: Addison, IL
Reg: 05-28-10
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07-23-12 07:53 AM - Post#2251160
In response to bowtieollie
Only a couple of auto flexplates will fit the 409 crank flange without adding spacers to level the surface. You can buy a flexplate without the indented bevel surface from Summit Racing, I forget which brand. Just have to look at the pictures and get the flat bolt on surface. Show-Cars might sell the correct spacer for generic flexplate.
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