HalfAF

I'm having trouble fitting a relacement dizzy to the 351c in my FC LTD.

It did slip in once, then after I accidently pulled it out while removing the rotor, it would not reseat again.

What gives here? The shaft size is 12.7mm compared to the worn 12.35 of the old dizzy (ancient Mallory DP). Does the oil pump drive hex have to be exactly in alignment with the gear? This new dizzy wont even engage the gear no matter how many times I move the shaft and pinion.

Its a real pain,..Jason

WBT56

Yes, the oil pump drive has to be lined up pretty well. You can use a small socket on a long extension to rotate it, or just move the crank a little as it settles into position. If you use a socket, make sure it won't fall off your extension.

__________________
If you're not driving a manual you're really just steering.

LTDHO

Sort of tap the dizzy. I mean move it in and out ant the oil drive will locate it's self. If you have had it in once already the shaft should be lined up already. It can only be out less than a 1/3 of a turn!

__________________

gregaust

It sounds like maybe you could have the wrong distributor..
Just to explain,in the XD type black cleveland blocks the section of the dist shaft below the gear has diam of approx .487".....The early cleveland distributors have a shaft size of .513"....
Now if you're trying to fit an early dist you see why it wont go in..
This may not be the case but it might help out..

HalfAF

Yep, I finally found that that is the problem. Somehow I screwed up measuring shaft sizes plus the Ford w/shop manual for the XDs had the earlier size. This is wrong, as mines a '79 and its .487''.

Ohh well, its out to machine shop.

TKS,..Jason

Behemoth

Hey man, I just got myself a FC with a 351C..

two questions for you.

A) What kind of fuel economy do you get??
B) how well does it take off from a standing start??


Mines pissing me off cause i've never had one before i don't know what to expect but i'm currently going through about 35-40L/ 100 kms and off the line i can't even keep up with 6cyl XDs..

thanks in advance

gregaust

What carb do you have there? if it's a carter thermoquad get rid of it and go with a 600 holley if your engine is fairly standard...I had the same thing with a 78 LTD...I did get the carter to run good but it chewed fuel...holley was good....If you've already got a holley there are other things to check out..

xacoupe

holley is EPA bait... unless you run gas dont do it unless you are prepared to risk a canary and a visit to the EPA.

IMO get the thermocrap fixed... no way it should be using that sort of fuel..

HalfAF

Should be getting 10-12 mpg city, 17-19 hi-way. Acceleration quite healthy provided engine is in tune. Falcon 6s of the time should blown into the weeds :-)

Jason

Behemoth

Yeah it is a holley... 650 if memory serves... just spent $300 having it reconditioned....

thanks for the info... i think i might have to book it in to have it fully serviced, tuned and checked out...

casue if i can't get the economy or speed back i'm going to have to look at mothballing the LTD until i can afford to have a full rebuild done...