Questions regarding a 2F/H42 swap for a '66 FJ45?

[srogers]

Good afternoon all - a few weeks back I posted some pics of a FJ45 my mechanic is working on:

It is apparently a '66, all stock, and the owner is trying to swap out the stock engine with a thrown rod and the stock 3 speed for an already sourced 2F with, presumably, H42 4 speed. My mechanic knows I am a Cruiser nut and I offered to "bird dog" some of this info, as he isn't certain what all he needs to obtain to handle the swap.

Few questions - there is NOT a transfer case attached with the 2F/H42; will the existing stock FJ45 transfer case bolt up, or does it need to be mated to a H42 transfer case?

Will there need to be new driveshafts, etc., purchased? Not sure if the existing driveshafts off of the FJ45 will mate up to a later model transfer case, etc.?

The bellhousing on the 2F/H42 has a "3F" stamped on it; is that correct? I've never dropped my FJ60's 2F/H42 so I am not certain what is stamped on the back of it.

Pics of the 2F and presumed H42 below.

Any help that can be offered is much appreciated

 

[tucker74]

You've got a late (post '85) 2F/4-speed by the bellhousing, while it will "work" it will tilt your transmission over 5 degrees and doesn't have a provision for supporting the rear. If you go that route you will need to use all the clutch components from that year and fab a cross member to support the transmission across the frame. The original case will bolt up and you're driveshafts should work (unless its the really late H42 with the 5-speed spacer, then you will need to lengthen the front & shorten the rear). Another option is using your original bellhousing and clutch components, it will have tabs for transmission mounts and won't tilt the driveline.

Good luck!

Tucker

 

[tornadoalleycruiser]

Easiest with an earlier bellhousing with the ears on the side. On your tcase question. Ur 45 came with 10 spline tcase. The late stuff is 19. Middle is 16. 4 speeds were 16 and 19.

Sent from my phone using IH8MUD

 

[3_puppies]

either way they go, it would be easier to move the throw out fork to the driver side of the bellhousing.

 

[Gumby]

I don't think the transfer case will bolt up.

That looks like a late 2f from a 60 series, as Tucker said. 19 spline output shaft on the trans. It will need a split case. The 75-80 four speed has a 16 spline output shaft. Your transfer case is a 10 spline case. The split case is a better transfer case, but it will require a crossmember, driveshaft flange adapters and shift linkage fabrication.

A 16 spline 4speed will bolt up to that bell housing, or a four speed and bell housing will bolt up to that motor and have mounts. You will still need flange adapters.

 

[srogers]

Thank you folks - should he try to source a 4 speed (H41?) from a late 40 series rather than use the presumed H42? Will he then also need a H41 matching transfer case?

Obviously this is something I've never done before, but want to help a fellow cruiser head get his 45 back on the road!

 

[Living in the Past]

Was it mention that the spacer from the back of the transmission is missing. You will need that to bolt up the split transfer case.

 

[srogers]

Was it mention that the spacer from the back of the transmission is missing. You will need that to bolt up the split transfer case.

Thanks for catching that - looks like the owner will need to dig up the tranny spacer and the matching transfer case?

Will the 2F mate up to the cooling system/radiator OK?

Will he need to fabricate motor mounts as well as the necessary tranny cross members?

 

[orangefj45]

the motor mounts will work as will the radiator and hoses. you'll need to get hoses for a later fj40, call it a 78.

as for the transmission and t-case setup........i would ditch that transmission and bell housing. the trans looks like it's missing some parts ( rear spacer, beraing, sleeve, ..... 0 and it's been exposed to moisture. so i bet there's rust in the gear set and bearling. boat anchor!
i'd try to find either a 40 series h42/h42 with the 4spd t-case or a combo from an fj60 with the split case. realistically, the split cases are much stronger and quieter and a better unit imho.
i have a complete combo here if you guys need it.
i would also run a cast iron 4spd bell housing from a 40 series so you can retain the oem rear engine mounts/brackets. i might have one of these for you as well. the flywheel and clutch assy you have on the 2f will work pefect.

thanks for the pm!

hth

georg @ valley hybrids