does a 250...

[Anonymous]

share the same bellhousing and trans as a 170? does it have an intake cast into the head like the 170/200?

much obliged!

 

[simon]

no and yes

 

[Anonymous]

what bellhousing and trans does it use? SBF? Same as a 240/300?

 

[addo]

It's the SBF bellhousing; I think the tooth count for flywheel or flexplate is 157. Said part is zero balance, like a 240/300.

Regards, Adam.

 

[rbohm]

what bellhousing and trans does it use? SBF? Same as a 240/300?

yes

 

[powerband]

There is a continuing discussion on 250's with manual tranny's. I'm building a C7xx 250 block donated from a stang V swap. Currently believe U need a 157 tooth Fly/Bell. Don't know why typical 300/240 164 tooth won't work but could be just starter position. The typical SB bells from the 60's are Ford# C5TA(164T) and C5DA(157T) used for Toploaders. These aluminum bells were usually used on most V apps but not HP. Later SB bells shoud work but cable clutch and different trannys often are incompatible. The 250 mated to a "Toploader config/boltpattern" tranny with a toploader bell is my route.

I got a suitable early bell with a Tremec adaptor for @ $150 on EvilBuy.
Also a SFI Flywheel under $100 - 157 tooth ZERO bal. I have a running 170/Toploader 3.03(3spd) hot rod I would like to try some different ideas.

PS : I don't have a clue which starter Application to use any help appreciated.

A few people say they found "late model" Maverick/Stang/Capri/Fairmont?Zephyr?" 250 standards- even 4 speed SROD seups but in the NE I've not found any. I haven''t seen any Fox 'stang sixes either.

Powerband

 

[MustangSix]

The 164 tooth flywheel could be used, but would require the matching bell and block plate to properly index the starter. That would allow you to use a clutch disc up to 11.5".

The downside is the rotating mass of the bigger wheel and components. Lighter, smaller stuff tends to accellerate faster and the smaller 10 or 10.5" clutch usually makes shifting faster and easier.

 

[Anonymous]

Hmmm... the 250 I'm getting is from a 78 Maverick (no bell/trans). The trans and bellhousing i have are from a 240ci 65-67 Econoline. I don't have a clutch or flywheel, so I could put just about anything in, I suppose. I hope this all works together.

This is for my 65 Econoline.

 

[rbohm]

8) you have to install a flywheel that matches the bellhousing. if you put a 164 tooth bell over a 157 tooth flywheel, the starter gear wont engauge the teeth. if you put a 157 tooth bell over a 164 tooth fly, the starter teeth will jam against the flywheel.

 

[wallaka]

8) you have to install a flywheel that matches the bellhousing. if you put a 164 tooth bell over a 157 tooth flywheel, the starter gear wont engauge the teeth. if you put a 157 tooth bell over a 164 tooth fly, the starter teeth will jam against the flywheel.

Makes sense to me...I never thought of it in terms of tooth count=diameter. The tooth pitch is pretty much standard so it has to equal that way. Well, you learn something new everyday.