Difference Btwn 022 and 070 FI Distributors?

[Bob B.]

Hi all,

I have an 022 FI distributor and an 070 FI distributor. The 070 has been redone and I'd like to switch the p/n plates between the two. The only physical difference I can see is that the top part is oriented differently between them, so it looks like all I have to do is remove the clamp holding the upper and lower pieces together, break the two pieces apart at the gasket, and rotate. Any reason why this wouldn't work? But I don't know if there is something different with the gears, although I wouldn't think so.

Thanks,

Bob

[Bill W.]

Re: Difference Btwn 022 and 070 FI Distributors?

Bob, The only difference between the two is the advance curve, Back to the garage! Bill

[John D.]

Re: Difference Btwn 022 and 070 FI Distributors?

Bob, Although the two distributors look the same at a glance they are far from it.
There are two versions of the '070 for a start. The so called NOS ones sold over the counter are different that the ones installed on the 64-65 Corvettes.
Different cams: 022 uses a 1042360 cam stamped 724. 070 cams is a story in itself. Ones that came with the car had a 732 cam I believe. After that Delco Remy used just about every cam in the cupboard as being correct for an 070 but in actuality that was/is an error for sure. All those cams you see on Ebay as being NOS for an 070 are in the 500 range. None are correct. If you have NOS '070 you hardly see the same cam used twice. You will see 534, 536, 530, etc. Whatever was on the shelf it seems.
But you didn't ask that.
The 070 is set up for the 30-30 cam
The 022 if for the '097 cam
Differences: 022 uses a 201 VA. 070 uses a 236 VA.
022 uses a different football on the main shaft than the 070. '022 uses a 54. 070 football is 03
The 54W football often seen on NOS main shafts is a service replacement shaft.

The weights on the '022 =#37. Weights on the '070 aren't stamped but not close to the '022
Distributor weight springs on the '022 are much stronger than the weak springs on the '070.
So to recap: They may look the same but are far from it.
Bills answer was much easier and also correct.
If you have the '022 and that's what you want send it to Don Baker for restoration. donbake@indianvalley.com
John

[John D.]

Re: Difference Btwn 022 and 070 FI Distributors?

Two retard and advance a 58 to 65 distributor you unloosen the zincad clamp and rotate the distributor left or right Bob etal.
That seems to be a little know fact to a novice and that's why you see so much bubba work on the distributor spacers. Mechanics cuttomg the pin off the spacer. They attempt to bend the pin for retard and advance and other crap that they wouldn't have to do if they would use rotate the top of the distributor. The bottom of the distr stays stationary. The top rotates. Sometimes paint, etc is holding the top from moving. Use a dead blow to handle that. JD

[Monte M.]

Re: Difference Btwn 022 and 070 FI Distributors?

Great information John.
Thanks for taking the time.

M

[John D.]

Re: Difference Btwn 022 and 070 FI Distributors?

Thanks Monte, I could have done a better presentation job though.
In the old days guys would look at a 58 to 62 FI distributor and think they were all the same also.
John

[Michael H.]

Re: Difference Btwn 022 and 070 FI Distributors?

Thanks Monte, I could have done a better presentation job though.
In the old days guys would look at a 58 to 62 FI distributor and think they were all the same also.
John

Thanks JD....

I'm still confused about "unloosen" though.