SBC 400 FLEXPLATE???'s

[dickeymoore]

Im looking for a sbc 400 externally balanced flexplate,I usually get the TCI 399373 flexplate but have been reading bad reviews on this flexplate now,so is there a good affordable sbc 400 flexplate out for sale now that is made in the USA?Thanks

 

[bracketchev1221]

I've used Summit and pioneer.

 

[dickeymoore]

ok Thanks

 

[spongbob]

Ive ran one once with a 350 flex plate was barly noticeable motor idle was simular to a v8 with a small cam just a little waver or simular to the slightest carb load up ...can't recomend but they have been dune that way...read article said someone drilled and filled there crank weights and claimed to use titanium studs threaded(pressed) into crank weights to decrease weight on the heavy side negating the external balance

 

[SS_Malibu]

I used the Summit one on my TH400/383. SFI 29.1 Blueprint motors approved. It’s actually the one I had on my TH350. 153 tooth. Been working great. No complaints.

 

[64nailhead]

I used the Summit one on my TH400/383. SFI 29.1 Blueprint motors approved. It’s actually the one I had on my TH350. 153 tooth. Been working great. No complaints.

Isn’t your motor internally balanced? It f yes, then that won’t work for the OP - he needs external balance

 

[dickeymoore]

I went with the ATI FLEXPLATE

 

[SS_Malibu]

Isn’t your motor internally balanced? It f yes, then that won’t work for the OP - he needs external balance

Yes, the motor is internally balanced. The flex plate I have is externally balanced. I purchased one recommended by Blueprint.

 

[1983calais]

Blueprint engines recommended an external balanced flywheel for an internal balanced 383?

 

[SS_Malibu]

Isn’t your motor internally balanced? It f yes, then that won’t work for the OP - he needs external balance

Blueprint engines recommended an external balanced flywheel for an internal balanced 383?

I went back and looked. I had that wrong. Blueprint uses and weighted harmonic balancer and a weighted flex plate. What I do remember is I got what they recommended. An externally balanced flex plate for a one piece rear main seal.

Thank you guys.