Flex Plate Info Please

[Weaver]

Hey all,

I spun a bearing on my motor, which led me to buy a new 5.0 stroker motor from modularmustangracing.com. Anyway, seems I'll need an 8 bolt flex plate as opposed to the 6 I had. I don't know jack about flex plates. So any info you think is helpful, feel free to post even if I don't ask specifically. Where is a good place to look? Does anything matter besides bolt count and tooth count? What tooth count do I need?

[cougar9150]

Ford racing Item # M6375H46 164 tooth 8-bolt made for 96-04 4.6/5.4 2V/3V/4V Engines. Should be about $60 give or take if you shop around. Other brands and higher performance ones are also available. Just Google the part number and you will get a ton of hits of places that stock it.

[merc]

Performance Automatic SFI Flexplate 8bolt PA26478-8

[Weaver]

Thanks guys! Got it for just under $60 from late model restoration. Shipping was $15... but whatever.

[Darrin]

Thanks guys! Got it for just under $60 from late model restoration. Shipping was $15... but whatever.


Did you actually get it? I really hope those are back. I just this week had a customer order one from that same place and they eventually called him back saying they were on "back order". Ran into this problem last year as well. At that time the word was that they were possibly discontinuing the item since Ford had discontinued the 8 bolt small patern flexplate for the 99-00 Mustang, which is exactly what these are.

I definitely hope this isn't still the same 'backorder' from last year.

Darrin

[ImpalaSlayer]

99 f250 with the 5.4

these are readly available at napa

[Darrin]

99 f250 with the 5.4

these are readly available at napa

Great, does that have the smaller bolt pattern that would work for these vehicles?

Darrin

[ImpalaSlayer]

Great, does that have the smaller bolt pattern that would work for these vehicles?

Darrin


for the crank? should work. i havent gotten around to buying one but this is what my tuner used on a crown vic he put a termi motor in. its also what he told me to get and i trust he is correct. i can double check if you want.

[Darrin]

The issue is that it isn't going to have the smaller torque converter bolt pattern. There are 2 bolt patterns on the converters. No issues on the crank bolt pattern.

Darrin

[ImpalaSlayer]

just checked with my tuner. he used a 99 f250 with the 5.4 flexplate

[Darrin]

just checked with my tuner. he used a 99 f250 with the 5.4 flexplate

He used that flexplate with a stock Marauder converter?

Darrin

[ImpalaSlayer]

He used that flexplate with a stock Marauder converter?

Darrin

uhhh all i can tell you is it went into a CV with a 4r70. are cv and mm converters different?

[Darrin]

Yeah, most of the CV's have the large pattern torque converter. Except for the HPP and the CVPI versions.

That plate will work with a lot of the aftermarket converters but one would need to make sure their converter has the large pattern first. I know it will work with a PI converter because they come with both bolt patterns. It would also work with most of the converters I supply.

My concern is that someone a little less informed might read this thread and think they can use that flexplate with just any converter, particularly a stock Marauder converter which won't work for sure. They would need to make sure that their torque converter has the large bolt pattern if they want to use it. Can't say that enough.

Are you talking to Sal by the way?

Darrin

[ImpalaSlayer]

sorry i have a pi converter, that would explain why he would tell it would work.

no i dont know who sal is.

[dohc324ci]

Here is where I bought mine:http://www.blueovalchips.com/index.php?l=product_detail&p=71

[Weaver]

Did you actually get it? I really hope those are back. I just this week had a customer order one from that same place and they eventually called him back saying they were on "back order". Ran into this problem last year as well. At that time the word was that they were possibly discontinuing the item since Ford had discontinued the 8 bolt small patern flexplate for the 99-00 Mustang, which is exactly what these are.

I definitely hope this isn't still the same 'backorder' from last year.

Darrin


Yeah.... they cancelled it. Said it's no longer produced. The engine should be done soon and now I'm back on here looking for a flexplate. Modular Mustang Racing (the guys doing my engine) said they could give me one for $200... thx but no thx.

[dohc324ci]

Yeah.... they cancelled it. Said it's no longer produced. The engine should be done soon and now I'm back on here looking for a flexplate. Modular Mustang Racing (the guys doing my engine) said they could give me one for $200... thx but no thx.


I was quoted $157 for PI SFI FlexPlate 8 bolt pattern from MMR and it didnt line up sent it back they refunded me and I spoke with Lonnie over at blueovalchips.com he had a few back in August/October.

Good luck. What motor did you go with?

[bob6364]

when i needed one i went to MF and SVTP and put up a wtb post and had a hit by the end of the day....if the guy knows what he has it will be about 90 bucks shipped.

[Weaver]

I was quoted $157 for PI SFI FlexPlate 8 bolt pattern from MMR and it didnt line up sent it back they refunded me and I spoke with Lonnie over at blueovalchips.com he had a few back in August/October.

Good luck. What motor did you go with?


I went with the MMR 5.0 STROKER Street Mod 850 short block. Having them swap my timing and heads onto it. And still looking to get rid of my short block w/ pistons/heads/crank... (1 bearing spun)

I don't know what MF or SVTP are but I'll google them right now. $90 sounds ok. Any opinions on what I should do for the flex plate bolts?

[dohc324ci]

I went with the MMR 5.0 STROKER Street Mod 850 short block. Having them swap my timing and heads onto it. And still looking to get rid of my short block w/ pistons/heads/crank... (1 bearing spun)

I don't know what MF or SVTP are but I'll google them right now. $90 sounds ok. Any opinions on what I should do for the flex plate bolts?

I think he means Modularfords.com and SVTperformance.com.

NICE. You will like the torque that comes with the extra ci!