Flex plate for th350 behind ls1?
Flex plate for th350 behind ls1? What flexplate do I need? I know I need the spacer for the snout of the converter right? I'm using this converter:
https://www.jegs.com/i/JEGS/555/60432/10002/-1
I have Google'd. I keep reading different **** lol
https://www.jegs.com/i/JEGS/555/60432/10002/-1
I have Google'd. I keep reading different **** lol
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Joined: Jan 2003
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Just use your ls1 flexplate, and the small round spacer for the converter snout that Hughes sells, hit that into the back of your crankshaft.
I have that exact same converter and it's a beast , lots of top end, and hits very hard, but I think it has too much STR for our LS cars ( which don't need so much str as some old school carb engines), because it hits the tires in 1st like a sledge hammer. I have some 28x14.5 hoosier QTP's coming so i'll see how it hooks with them.
With 400+rwhp and traction i'd get an sfi flexplate. I have the B&M , it fitted well but I think I had to elongate the converter holes for converter. (It's been a while now I can't remember for sure, I might be thinking of another car I did)
I have that exact same converter and it's a beast , lots of top end, and hits very hard, but I think it has too much STR for our LS cars ( which don't need so much str as some old school carb engines), because it hits the tires in 1st like a sledge hammer. I have some 28x14.5 hoosier QTP's coming so i'll see how it hooks with them.
With 400+rwhp and traction i'd get an sfi flexplate. I have the B&M , it fitted well but I think I had to elongate the converter holes for converter. (It's been a while now I can't remember for sure, I might be thinking of another car I did)
11 Second Club
Joined: Dec 2016
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Just use your ls1 flexplate, and the small round spacer for the converter snout that Hughes sells, hit that into the back of your crankshaft.
I have that exact same converter and it's a beast , lots of top end, and hits very hard, but I think it has too much STR for our LS cars ( which don't need so much str as some old school carb engines), because it hits the tires in 1st like a sledge hammer. I have some 28x14.5 hoosier QTP's coming so i'll see how it hooks with them.
With 400+rwhp and traction i'd get an sfi flexplate. I have the B&M , it fitted well but I think I had to elongate the converter holes for converter. (It's been a while now I can't remember for sure, I might be thinking of another car I did)
I have that exact same converter and it's a beast , lots of top end, and hits very hard, but I think it has too much STR for our LS cars ( which don't need so much str as some old school carb engines), because it hits the tires in 1st like a sledge hammer. I have some 28x14.5 hoosier QTP's coming so i'll see how it hooks with them.
With 400+rwhp and traction i'd get an sfi flexplate. I have the B&M , it fitted well but I think I had to elongate the converter holes for converter. (It's been a while now I can't remember for sure, I might be thinking of another car I did)
11 Second Club
Joined: Jan 2003
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I think some of the people with t350/400/glide swaps that ruined their thrust bearings in their engine, their converter possibly has not enough clearance before it bottoms out in the crankshaft. The converter snout on the crankshaft side is only there to center the converter properly. The converter should never bottom out on the crankshaft. Using 1/8" washers between the converter and flexplate is perfect for a TH400 swap using a standard Th400 style converter, with the Hughes style ls1/th400 spacer (that is needed to extend the crankshaft pilot hole)
As long as it is a non-lockup TH350, then yes converter and flexplate are same.
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1-866-726-8358
info@ftiperformance.com
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FTI Converter build sheet
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.
I have that exact same converter and it's a beast , lots of top end, and hits very hard, but I think it has too much STR for our LS cars ( which don't need so much str as some old school carb engines), because it hits the tires in 1st like a sledge hammer. I have some 28x14.5 hoosier QTP's coming so i'll see how it hooks with them.
I have that exact same converter and it's a beast , lots of top end, and hits very hard, but I think it has too much STR for our LS cars ( which don't need so much str as some old school carb engines), because it hits the tires in 1st like a sledge hammer. I have some 28x14.5 hoosier QTP's coming so i'll see how it hooks with them.
Last edited by Launch; Dec 27, 2018 at 06:06 PM.
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What flexplate do I need? I know I need the spacer for the snout of the converter right? I'm using this converter:
https://www.jegs.com/i/JEGS/555/60432/10002/-1
I have Google'd. I keep reading different **** lol
https://www.jegs.com/i/JEGS/555/60432/10002/-1
I have Google'd. I keep reading different **** lol
Jegs has an sfi approved TH350 to standard LS 6 bolt for a relatively inexpensive amount, comes with converter nose adaptor and bolts. Flex plate is installed between nose adaptor and crankshaft and flexplate is not flat but cone shaped for perfect spacing, I’m using one ona build right now and so far ....no surprises.