Had a guy bring me his 63 Fairlane that had a vibration that he had swaped the 221 for a 289. Turns out he used the 221 balancer and flywheel. A 221,260, and 289 use the same crank but to make up for the difference in piston weight they all use different balancer and flywheel. 62-62 221 23.1 imbalance 62-63 260 24.5 imbalance 64 26.2 imbalance 289 28.2
Aren't SBFs a joy? Those of us using one also have to sort out pulley sizes - crank and water pump - and flexplates - counterbalance weights and tooth count. That doesn't even include motor mounts, distributors, timing sprocket thickness, etc. SBC and SBM folks, we envy your limited choices and abundant cross-fits.
I do like the SBF, but I won't buy a used one to work with unless it has a complete accessory drive set, and is running in a vehicle. I have gone down the rabbit hole of the seemingly semi-monthly design changes that they went through with the parts on the outside, one too many times.
The damper and pulley and flywheel all came off the same 6 bolt 289 because the swapped in 289 was a 6 bolt and the trans stuff is already changed.
It's not only Fords, Back about 30 years ago my brother bought a great looking black Chevy square body 3/4 ton 4x4. Trans went bad and he had a guy rebuild it and replace the flexplate for the "400" that it was supposed to have in it at the same time, He drove it over here and it had a Vibration in it. Brought it out to me at the school shop and we got to checking and ran the casting number on the block and did some more checking and =350, knocked the counter weight off the flexplate and it smoothed right out pretty as you please.
I’m talking about the holes for the pulley that goes on the damper and how it attaches to the damper, if the car had a damper from a 260 it was 3 bolts. I know the 64 289 had the same 3 lower pulley and that’s probably why the 260 damper was used. Ford changed the lower pulley and damper to 4 bolts sometime after 64 so if you ordered a general 289 damper it will most likely have 4 bolts.Summit at one time had 3 bolt 289 dampers. This is one of Fords pain in the ass ideas.
Oh, yeah, and if the fuel pump cam is two-part, you will need a different camshaft sprocket than if the fuel pump cam is one part. Ask me how I know. The fuel pump cam interfered with the inside of my timing cover when using the sprocket recommended by the aftermarket manufacturer. Did some measuring and learned that a different sprocket should be used. Learned about that from someone on the interweb. SBF is a series of unnecessary exceptions.
They changed that when the water pump inlet changed sides. When the inlet changes sides, the timing pointer changes sides. The 3 bolt damper has timing marks for a passenger side inlet, the 4 bolt has marks for the driver side inlet.
On m 77 351W I decided to change my drivers-side water pump outlet to passenger side to make it easier (and about $100 cheaper) to connect to a SBC -oriented radiator. So with a 68 302 water pump, I had to change the timing mark and arrow. This is what I made out of some 18-gauge sheetmetal and by cutting two marks -TDC and 10 BTDC - into the damper with a hack saw. Its not complicated, just another SBF annoyance.
All I do is remove a valve cover and turn the engine TDC exhaust to where the intake and exhaust valves are open the same amount And look at the mark if it not real close to 0 you got the wrong stuff or the mark has slipped.
In my 45-years of working on the SBC as a platform, I have yet to find a slipped damper ring. I have seen a few come clean off, but none that have slipped and remained functional.
Quick question while so many SBF guys present. I am replacing my worn 78’ 351 with a low mileage 302. Are there any spacers that will allow use of my 351 distributor in the 302?
Soooo right....one reason that me and my family have always been SBC kind of people...just my experience...
Nope! (I never heard of one!) Duraspark distribs. are so cheap...... no real need to try and "save" a 351 Duraspark. Special springs & weights.....should interchange. 6sally6
You can get a reman for about $72, and one from a yard for $15-25. I guess a spacer could be made, but time and materials aren't free.
Thanks for your replies. I am running a GM style HEI distributor in my 351. I was hoping I could transition it to the 302. I chose the HEI because I have a number of those distributors and parts. I have a long history of Chevrolets. The 302 came with a points distributor so I will get it running in that mode and look at options. I appreciate your input.
Sunbeam, thank you. I did not realize there was a difference in that aspect as well. From this thread I have learned about the 4-3 bolt difference on dampeners. I could have swapped in one of my SBC’s with a chevII pan but I really want to keep my 57’ all Ford. Will the 302 auto flywheel work with my 351 starter?