70 440 and 11” flywheel

[69-beeper]

Do all 70 440s have six pack rods? Do these use, a special unbalanced dampner or flywheel (or both), or do they use the neutral balanced dampner flywheel?

Info is all over the place on this. I see where there’s a six pack dampner at times, but nothing specifically for the flywheel on with the forged crank 70-71 440 six pack rods. Is the 6 pack forged crank dampner all that’s needed? Can ‘70 440 work in a 68-69 B-body with the 11” neutral balance flywheel and bell housing that came with a 383?

 

[Jerry Hall]

I may be wrong, but I thought 70 went to a 10 1/2" flywheel.

 

[cosgig]

My 70 uses the 10.950” clutch and aluminum bellhousing. It’s a 6bbl car

I may be wrong, but I thought 70 went to a 10 1/2" flywheel.

 

[R/T Boy 67]

All 70 HP 440s used the so called six pack rods and were externally balanced, on the flywheel and dampener.The 70 LP 440s used the 69 down stuff. I'm sure there were exceptions, but that is how it was supposed to be.

 

[66Satellite47]

I didn't think all '70 HP 440's had the big rods. Sure could be wrong. Pretty sure one of the '70 440's I got was HP & didn't have the big rods.

 

[69-beeper]

I may be wrong, but I thought 70 went to a 10 1/2" flywheel.

No you’re not wrong. And I knew this. I tried to submit my question as clear and best I could. I failed, lol.

I have both, a 72 B body 4-speed and a 69 B body 4-speed 383/383 respectively, with the correct factory trans equipment (The ‘72 = 10.5” flywheel with 10.95” scalloped clutch/pressure plate combo W/aluminum bell, and the ‘69 = 11” flywheel/clutch w/cast iron bell).

I also have an unmolested 1970 440HP/auto. I would like to know is, if this 440 would work with in 69 B body using the 11” flywheel from the ‘69. If not, what flywheel would I have to use with that 70 440 with forged crank and six pack rods?

 

[69-beeper]

All 70 HP 440s used the so called six pack rods and were externally balanced, on the flywheel and dampener.The 70 LP 440s used the 69 down stuff. I'm sure there were exceptions, but that is how it was supposed to be.

That’s kinda what I want to know.

Now the question is where how can I get a 11” flywheel for a ‘70 440 HP? For that matter, I have not been able to find info for even the 10.5” balanced flywheel that came with the 440HP. I don’t believe the 72 and later 440 cast crank flywheels use the same balance as the ‘70-71 forged cranks, or do they?

 

[hunt2elk]

I would call Brewers, they will know what you need - no sense guessing. I've been using the McLeod FW202's on my 69's, but see they can be had with weights as well.
http://www.brewersperformance.com/products.php?cat=46

 

[cosgig]

I would call Brewers, they will know what you need - no sense guessing. I've been using the McLeod FW202's on my 69's, but see they can be had with weights as well.
http://www.brewersperformance.com/products.php?cat=46

when I called Wayne about the clutch in my car, the first thing he asked for was the tooth count on the flywheel. Apparently there are only 2 flywheel sizes, but 3 clutches. The 130 tooth is for the 10 1/2” clutch and the 143 tooth is for the 10.950” and the 11” clutch. Why the difference in the 2 larger clutches I do not know, but he did say that the 10.950” clutch is for the aluminum bell housing, and the 11” clutch uses the cast iron.

 

[R/T Boy 67]

The 130 is for 10.5"and 10.95" The 143 is for ll". You can get aftermarket 143 flywheels that are drilled for both patterns. The factory aluminum bellhousing fits the 130

 

[hunt2elk]

when I called Wayne about the clutch in my car, the first thing he asked for was the tooth count on the flywheel. Apparently there are only 2 flywheel sizes, but 3 clutches. The 130 tooth is for the 10 1/2” clutch and the 143 tooth is for the 10.950” and the 11” clutch. Why the difference in the 2 larger clutches I do not know, but he did say that the 10.950” clutch is for the aluminum bell housing, and the 11” clutch uses the cast iron.

Expand the pic of the McLeod FW202 in the link I posted and you will see it is drilled for multiple pressure plates like R/T Boy 67 stated above.

 

[Orig69]

No you’re not wrong. And I knew this. I tried to submit my question as clear and best I could. I failed, lol.

I have both, a 72 B body 4-speed and a 69 B body 4-speed 383/383 respectively, with the correct factory trans equipment (The ‘72 = 10.5” flywheel with 10.95” scalloped clutch/pressure plate combo W/aluminum bell, and the ‘69 = 11” flywheel/clutch w/cast iron bell).

I also have an unmolested 1970 440HP/auto. I would like to know is, if this 440 would work with in 69 B body using the 11” flywheel from the ‘69. If not, what flywheel would I have to use with that 70 440 with forged crank and six pack rods?

View attachment 1113087

A 1970 440 HP engine with six pack rods and crank would use a 1970-72 440 six pack 10-1/2 inch flywheel 130 tooth
I posted that flywheel for sale under mechanical parts on page 2 the other day.

 

[1 Wild R/T]

Since you need a 11" for a 69 & not the 10.5" for a 70 which uses the 10.95 scalloped clutch I would purchase a 69 11" flywheel which is neutral balance & take it to a old school machine shop that does balance work... I know off three local shops who all have the info on the balance specs for a 908 rod 440.... Shouldn't be a big deal..

 

[cosgig]

The 130 is for 10.5"and 10.95" The 143 is for ll". You can get aftermarket 143 flywheels that are drilled for both patterns. The factory aluminum bellhousing fits the 130

yes, that’s it, sorry for the misinformation and confusion. My old timers is starting to set in, and I just got home from surgery today and I’m still a little foggy!

 

[moparedtn]

Well, I'm no expert - but my '68 GTX currently has a '72 440 engine with the stock
"forged crank" balancer, the '68 11" heavy as hell factory bellhousing, an 11" (143 tooth)
factory heavy-assed flywheel (supplied by Brewer's as resurfaced) and an 11" B&B clutch
setup from RAM. All of that supporting an 18-spline A833 from 1969.

Sounds like quite the hodgepodge, right? Nah, it all bolts right up like it was meant to be -
no modifications necessary, thank heavens. Stock starter bolt pattern, the whole biz.
I'd imagine if anything were out of sorts or I had some sort of balancing issue, it would make
itself readily apparent - which it hasn't, at least up to about 110mph (allegedly, as far as the cops know).


I echo and cannot recommend STRONGLY enough to avail yourself of the wisdom of the folks at
Brewer's. Those brothers are walking reference libraries on this subject and always willing to help!

 

[JackR]

Well, I'm no expert - but my '68 GTX currently has a '72 440 engine with the stock
"forged crank" balancer, the '68 11" heavy as hell factory bellhousing, an 11" (143 tooth)
factory heavy-assed flywheel (supplied by Brewer's as resurfaced) and an 11" B&B clutch
setup from RAM. All of that supporting an 18-spline A833 from 1969.

good to hear this as that is the same flywheel/clutch assembly I put together except on a 70 440.

 

[1 Wild R/T]

good to hear this as that is the same flywheel/clutch assembly I put together except on a 70 440.

A 72 440 has about a 70% chance of having LY rods... So it's neutral balanced...

 

[69-beeper]

Since you need a 11" for a 69 & not the 10.5" for a 70 which uses the 10.95 scalloped clutch I would purchase a 69 11" flywheel which is neutral balance & take it to a old school machine shop that does balance work... I know off three local shops who all have the info on the balance specs for a 908 rod 440.... Shouldn't be a big deal..

Thanks for the info. Now that I know there’s not a 11” flywheel for this motor out on the market, I’ll re-evaluate the situation and decide what to do. More than likely I will set this motor aside for another project or sell it.

 

[69-beeper]

Just an update:

After visiting 440 Source’s website and getting educated on dampers, I can confirm that my ‘70 440 HP has the “six pack” rods as R/T Boy 67 posted.

The only bad thing about going to 440 Source website, is now I’m drooling to build a stroker.