Four speed hardware?

[wasco]

Good Morning to all of you!

The list of things to get for the four speed conversion is dwindling - need to clean up and paint everything before getting started on assembly but nothing came with hardware. Does anyone have a list handy of all the bolts I'll need to get? Flywheel, pressure plate - are the trans to bellhousing, bellhousing to block anything special? Anything else? I would guess the flywheel and pressure plate bolts should be grade 8 or ARP or something but are they anything special that a good hardware store wouldn't carry?

Thank you very much! This is going to be fun!

 

[MoparBill]

Brewer's has it all....

 

[PurpleBeeper]

Off the top of my head....
1. Flywheel - odd shaped grade 8 & I think your flex plate bolts are the same???? use loctite
2. Pressure Plate to flywheel - grade 8, hardware store OK, use loctite - I think 3/8" standard
3. Bellhousing to block - grade 8 preferred (but I've used std. bolts before)
4. Trans to bellhousing - grade 8 preferred ( " " ") - I think 7/16" (?) standard
5. SPECIAL - find two 6"-8" long 7/16" standard bolts for installation of trans only. Lift trans, start with these two bolts, slide trans in, & put in all 4 correct length bolts. Sometimes having several of these in different lengths can help.
6. Trans to cross member - grade 8 preferred, but not required in my opinion
7. Not really "bolts" but the "z-bar" pivots (bellhousing + frame) and have the frame bracket welded in
8. I suggest a shifter bushing set. thin little "shim" type washers and cotter pins
9. two shifter linkage to trans bolts....longer, maybe 4"-5" and I think they're 3/8" std. I can't remember for sure, but I "think" I remember having to put the top bolt in through the linkage before the trans is all the way lifted up or the driveshaft hump/trans tunnel of your floorboard gets in the way....not sure though if I'm remembering right.
10. I believe trans crossmember bolts are the same auto/4spd ?????? not positive

 

[NJRR]

Off the top of my head....
1. Flywheel - odd shaped grade 8 & I think your flex plate bolts are the same???? use loctite
2. Pressure Plate to flywheel - grade 8, hardware store OK, use loctite - I think 3/8" standard
3. Bellhousing to block - grade 8 preferred (but I've used std. bolts before)
4. Trans to bellhousing - grade 8 preferred ( " " ") - I think 7/16" (?) standard
5. SPECIAL - find two 6"-8" long 7/16" standard bolts for installation of trans only. Lift trans, start with these two bolts, slide trans in, & put in all 4 correct length bolts. Sometimes having several of these in different lengths can help.
6. Trans to cross member - grade 8 preferred, but not required in my opinion
7. Not really "bolts" but the "z-bar" pivots (bellhousing + frame) and have the frame bracket welded in
8. I suggest a shifter bushing set. thin little "shim" type washers and cotter pins
9. two shifter linkage to trans bolts....longer, maybe 4"-5" and I think they're 3/8" std. I can't remember for sure, but I "think" I remember having to put the top bolt in through the linkage before the trans is all the way lifted up or the driveshaft hump/trans tunnel of your floorboard gets in the way....not sure though if I'm remembering right.
10. I believe trans crossmember bolts are the same auto/4spd ?????? not positive

I see no reason to NOT use GRade 8 bolts on everything. THe cost differential is minimal and you won't sheer them like crap Grade 2 chinese stuff from Home Depot.

 

[PurpleBeeper]

I see no reason to NOT use GRade 8 bolts on everything. THe cost differential is minimal and you won't sheer them like crap Grade 2 chinese stuff from Home Depot.

good point

 

[wasco]

Thanks PurpleBeeper - exactly what I needed! And the point about using Grade 8 is well taken, NJRR, might as well. Just looked at Brewers - actually placed an order with them yesterday for the fork and pushrod boots, firewall stud bracket and side cover gasket but $40 for pressure plate and flywheel bolts seems a bit steep. I guess it doesn't make much sense to worry about $40 after dropping $2400 on everything else, but every dollar counts! Luckily, the engine and trans will be going into the car together, which I hope will make things a little easier on me to get the bellhousing lined up and everything minus the shifter bolted together to go in as one unit.

Thanks again!

 

[gkent]

For flywheel and pressure plate I would buy from Brewers, Summit, etc.. As mentioned, the flywheel use a special bolt BUT so does the pressure plate - these will have a shoulder which will index the pressure plate and usually fit into a recess in the flywheel.

Grade 8 ... grade 5 is more than sufficient for everything else. In my experience, anything requiring a grade 8 bolt on a car will require a "special" bolt (crank mains, heads, k-member, etc). If it isn't "special" then grade 5 is usually plenty. And FWIW, if you compare a grade 5 bolt next to a grade 8, the grade 5 is a nice looking bolt.

 

[Cornpatch MO]

With grade 8 bolts, make double sure you don't get them cross threaded or break one off. They are a real PITA to remove by drilling.............................MO

 

[PeteBell68]

Good Morning to all of you!

The list of things to get for the four speed conversion is dwindling - need to clean up and paint everything before getting started on assembly but nothing came with hardware. Does anyone have a list handy of all the bolts I'll need to get? Flywheel, pressure plate - are the trans to bellhousing, bellhousing to block anything special? Anything else? I would guess the flywheel and pressure plate bolts should be grade 8 or ARP or something but are they anything special that a good hardware store wouldn't carry?

Thank you very much! This is going to be fun!

Buy good quality bolts always for a clutch assembly .if it detonates because you cheaped out you and your passengers will be hurt especially if wound in the RPM 'S

 

[wasco]

Another good point - but I wouldn't go cheap on these bolts, I just didn't think they should cost quite so much. Bought a set of pressure plate bolts online for a few bucks cheaper than Brewers - I'm going on the assumption the original flexplate bolts and the flywheel bolts are the same. I have to clean up all the used four speed stuff and get it painted, etc so actual assembly is a ways down the list yet.
Thanks everyone for the input!

 

[gkent]

A flywheel is a lot thicker than flexplate.

 

[Daves69]

I'm going on the assumption the original flexplate bolts and the flywheel bolts are the same.

Like Stanton indicates, you'll need longer bolts.

Here's an MP flywheel bolt compared to a flex plate bolt .........

 

[wasco]

Would the correct bolt be 7/16-20in, with an underhead length of one inch?

 

[Daves69]

7/16"-20 X 7/8" Grade 8. Notice the serrations under the head for the locking feature. Bolt head height about .287". Shank about .250" in length to thread, diameter .437". Black phosphate coated.

 

[wasco]

Excellent, thorough information! And thanks for the bolt picture!