[roush_racer22]

i took a 429 thunder jet out of a 71 Thunderbird i want to put my std tranny on the motor but im unsure what bell housing and flywheel will work i have a new flywheel of a 77 460 will this work on the 429 and is it balanced different ? im doing this swap in a 68 f-100 the 429 has a c6 behind it but i have a wide ratio 4 speed i would like to use

[timothale]

Ford changed pilot bearing sizes some where along the line, some big blocks used the same size as FE ( 390) engines.

[matt167]

429-460 before 1978 is internally balanced. You can run a 390 flywheel and clutch with a 351M/400 bellhousing.

[roush_racer22]

so on my 71 429 im gonna want to run a 390 flywheel and i have a 400m bellhouseing but will one off a 390 one work better i no a 400m will not work on a 460 it makes it stick iv tryed that before

[roush_racer22]

so im gonna want to use a flywheel and clutch of a 390 and a bell housing of a 400m i put a 400m bell houseing on a 460 once dident work out so hot but i have a bell houseing for a 400m 390 and a 460 and a flywheel and clutch off a 390 or of a 83 460 ???

[matt167]

Internal balance engines, you can use a 390 flywheel/ clutch and 351M/400 bellhousing. External balance engines you need a 460 flywheel because there is no weighted 390 flywheel, and that makes clearence issues with the 351M/400 bell, because there shorter. You can get some shim plates and make it work.

[roush_racer22]

ok i got yea so the 351m/400 bell housing will be fine on my 71 429 because its Internal balance and like i said i tried that on a 460 but the 460 was an 80 so it was External balance makes sense now i really appreciate it