Cadillac 429 rebuild

Dr_evil said:

Seen it and googled a bit too you may have found a winner if it comes with bellhousing!

If not theres another bellhousing on ebay that could possibly fit

Click to expand...

has to be a gm bell housing doc.

Well its a GM gearbox from a medium duty truck so it'll be a GM bellhousing

Dr_evil said:

Well its a GM gearbox from a medium duty truck so it'll be a GM bellhousing

Click to expand...

Be careful that could be from a small block. Only chance would be from a 454,
all pick ups were small block family. what truck lets see the add

It looks like a SM465 from the ad, have sent a message to confirm but if it is then game on

Dr_evil said:

It looks like a SM465 from the ad, have sent a message to confirm but if it is then game on

Click to expand...

here is a bit of info for you

GM SM465 General Information | Tech Vault | Advance Adapters

Gearbox sourced but in Dorset......could be a fun road trip I suppose!

Dr_evil said:

Gearbox sourced but in Dorset......could be a fun road trip I suppose!

Click to expand...

with that you will never need low range 4x4. and drive it like a 3 speed as 1st will only get you 3-4mph and you are red lined

It also means I wont write off the gearbox or transfer......LT230 will take the strain no problem!

My plan is to fit 1.1 transfer gears so I can get up to around 50 in 3rd as I think that should be possible with 3.54 diffs and the 35's

what bellhousing pattern you 429 got?

Hydromatic pattern kinda pointy haha


Second pic shows it but I think all bellhousings are pretty close! If not local gearbox guru can mod the bellhousing for me

cos it wont fit gm gearbox.

however gm manual box that you looking at should have same splines as lt95...so that may come in handy somewhere..maybe..prehaps.

looks like bop..wont fit...

you gonna hone them bores?can see 2nd compression ring marks..new rings too??(while in bits)

gearbox defo gm.block bop

adapter plate off the shelf..you can buy over here

Block and bellhousing look similar, both are GM made after all


But the point is the box can take it and can be mated to an LT230!

zen said:

what bellhousing pattern you 429 got?

Click to expand...

not the same as chevy all gms are not the same

Land of the midnight sun

and midday darkness!!

eh thor??

send me some summer beer please..you can keep the winter beer though..lol

zen said:

Land of the midnight sun

and midday darkness!!

eh thor??

send me some summer beer please..you can keep the winter beer though..lol

Click to expand...

this thread reminds me of

Johnny Cash One Piece At A Time - YouTube

zen said:

looks like bop..wont fit...

you gonna hone them bores?can see 2nd compression ring marks..new rings too??(while in bits)

Click to expand...

Its starting to get expensive an time consuming lol

zen said:

looks like bop..wont fit...

you gonna hone them bores?can see 2nd compression ring marks..new rings too??(while in bits)

Click to expand...

fett said:

Its starting to get expensive an time consuming lol

Click to expand...

couple of them cylinders look like oil burners.......... The weak spot on them was there oiling problems

I also questioned about checking the mains and rod bearing also. Wonder how many spiders and mice been in the water ways:lol: