torque converter to flexplate issue?
03-04-2013, 12:52 PM
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torque converter to flexplate issue? Found a good size stall to match my cam but did some reading and am a bit conufsed. Will be using a turbo 400 and found a 3800 stall that the guy was using with a sbc. I have a 99/00 lq4 with the shorter style crank. I read somewhere that the flexplate if stock might not work because its bolt holes are spaced wider than the torque converters bolt holes would be. I know they make specially built torque converters to bolt up to a ls style flexplate though. Any help on this guys. The price is right for the converter but im not 100% this is going to work correctly.
03-04-2013, 03:49 PM
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<I>[QUOTE=OnlyACamaroCanbeAZ28;17200018]Quote:
Originally Posted by jon6.0
The flexplate stays in the same spot. The spacer is needed on a converter meant for a SBC. Most converter manufacturers just ask what engine the TH400 is behind and put the correct length pilot on the front of the converter so no spacer is required. I had a TH400 in my 05 GTO and that's how it worked.
this ^^^^
It's an either or deal....
Either you use a converter for a SBC along with the spacer,
OR you have the converter built with the longer pilot for a LS engine.
The flywheel position is unchanged, and the starter is not affected. </I>
This is info I just found on another forum. and yes zones since i have the longer crankshaft i guess i would not need the spacer that all the others are using with the 01 and newer lq4's. Any issue with the bolt pattern from the sbc style torque converter lining up with the lq4 flex plate bolt holes? Also whats the deal with the flexplates being flat or curved? i think the one on my engine is flat but I noticed it is cracked so will be replacing
Originally Posted by jon6.0
The flexplate stays in the same spot. The spacer is needed on a converter meant for a SBC. Most converter manufacturers just ask what engine the TH400 is behind and put the correct length pilot on the front of the converter so no spacer is required. I had a TH400 in my 05 GTO and that's how it worked.
this ^^^^
It's an either or deal....
Either you use a converter for a SBC along with the spacer,
OR you have the converter built with the longer pilot for a LS engine.
The flywheel position is unchanged, and the starter is not affected. </I>
This is info I just found on another forum. and yes zones since i have the longer crankshaft i guess i would not need the spacer that all the others are using with the 01 and newer lq4's. Any issue with the bolt pattern from the sbc style torque converter lining up with the lq4 flex plate bolt holes? Also whats the deal with the flexplates being flat or curved? i think the one on my engine is flat but I noticed it is cracked so will be replacing
Last edited by OnlyACamaroCanbeAZ28; 03-04-2013 at 03:59 PM.
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03-04-2013, 09:15 PM
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a buddy of mine did that with his lq4/700r4 3rd gen camaro. I know a lot of others do it just always been a lil weary about it once you get up to the 450-550 hp range.I should be getting this converter tomorrow so ill try bolting it to my cracked torque converter and see if i have to elongate my holes too. I wouldnt mind buying a stronger sfi flexplate but the prices on some of those are ridiculous.
