sm465 into a m1008 for towing

[84cucv1ton]

truck is all stock other then 33" tires.. truck is used for hauling only.. th400 is cooked. he can get a complete 88 k5 sm465 for 500.. hydro clutch. 32 spline tilt wheels.. all in the truck still. will this set up still do 55 down the road? any tips tricks to swamping it in? thanks

 

[Recovry4x4]

Should have no problem doing 55. Since the 400 doesn't have a lockup converter he might be able to squeeze a couple of more MPH out of it. Probably the hardest thing to get will be the flywheel. I just passed up a 2WD 465 backed up to a 6.2 in the junk yard a few months back.

 

[84cucv1ton]

been looking for a flywheel no luck yet

 

[84cucv1ton]

anyone know if a bbc flywheel will work thanks

 

[Recovry4x4]

Can't say. I knew I should have grabbed the boneyard setup. Look for a PM

 

[Sephirothq]

autozone new 140 ish

 

[DokWatson]

6.2 diesel flywheels are specific to the 6.2, nothing else will work.

As far as road speed, its easy to figure out. You won't gain much MPH. Gear Ratio Calculator

 

[fstfrdy]

i have the 465 in my pickup. its a 75 k10 with a 350. but with 32"in tires and 373 gearsits running 3000 rpm at 65 mph. but it has power to spare i have a couple of busted axles to prove it. if the m1008 has the 308 gears(i think thats what they have, not really sure) it should do considerably better

 

[2deuce]

You should gain some mpg too. Can't you get a flywheel from napa?

 

[ODdave]

i have the 465 in my pickup. its a 75 k10 with a 350. but with 32"in tires and 373 gearsits running 3000 rpm at 65 mph. but it has power to spare i have a couple of busted axles to prove it. if the m1008 has the 308 gears(i think thats what they have, not really sure) it should do considerably better

1008 has 4.56 gears....

 

[transman]

check out Car-Part.com. the closest 6.2 flywheel listed to NJ isin carlisle Pa.@ $100 most of the yards who list there will be more than happy to ship. If you strike out there I've got 1 or two that I can check for condition .

 

[fstfrdy]

if they have 4.56 gears its going to slow down. the 4th gear ratio is only 1 to 1 on the sm465. but a 7.56 to low gear so with that much torque expect things to break

 

[imbobbbb]

I just put an sm465 in my m1009.It all bolts up really easy.Top speed is about the same since a t400 and sm465 both have 1:1 ratios in top gear.You may gain a couple more mph since you don't have converter slippage but it isn't going to change much.I haven't really noticed any difference on the highway but I like the manual trans much better overall.I'm sure I would like an nv4500 even better,[with m1008 axles],but money prevents that at the moment.6.2 flywheels are avalible new and they aren't too expensive.

 

[84cucv1ton]

yeah were getting a new one

 

[GM72K10]

I have a 86 ex military firetruck converted to a dump with a stick and the 6.2 and 4:56s. It is great to drive around empty and will take a load (had 3 tons in it) but it is SLOW loaded down, so I wouldn't tow with it. Just my 2 cents.

 

[84cucv1ton]

yeah i could see that but its in great shape and its paid for. not towing anything big and heavy.. maybe going to 35" tires would help

 

[2deuce]

I think the sm465 can be driven with economy in mind much easier than the th400, even with the ratios being the same.

 

[84cucv1ton]

we are coming along on this.. got the sm465 rebuilt.. 208 is gone. now have a rebuilt 241 with a slip yoke eliminator.. just waiting on the poly mounts and clocking ring. have a center force clutch. new flywheel.. this has been fun. learning a lot

 

[1984M1009]

cool I am doing this swap as we speak in my M1009 I have hated the turbo 400 since I have got it ruuning

 

[84cucv1ton]

nice we are doing this on a m1008. been fun so far.. learned alot