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12-05-2021, 03:16 PM | #1 |
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Flathead Timing Covers
Hello:
Can early V8 timing covers be swapped for late model timing covers on later flatheads like an 8BA or an 8RT? Is there an adapter that would allow it? I would like to run an early magneto set up on an 8BA. Thank you for the help. JW |
12-05-2021, 03:23 PM | #2 |
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Re: Flathead Timing Covers
You would need to switch to an early camshaft to do that.
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12-05-2021, 03:25 PM | #3 |
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Re: Flathead Timing Covers
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12-05-2021, 04:36 PM | #4 |
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Re: Flathead Timing Covers
edit: After re-reading this thread I realized my answer had nothing to do with the original question. Please skip this post and continue to helpful answers!
I have seen bolt on distributor drive gears offered over the years to allow early cams to drive late drive distributors. edit: found it:https://www.speedwaymotors.com/Early...Query=91015634 I have no experience with that product, just remember seeing it offered. Last edited by 38 coupe; 12-07-2021 at 09:02 PM. |
12-05-2021, 08:42 PM | #5 |
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Re: Flathead Timing Covers
The cam itself will swap with no mods. Any grind will go on either core. Use the EARLY timing gears on both the crank and the cam. Use an aluminum gear on the cam. Use an early timing cover. If you are using a Harmon Collins mag there are lead plates available new that enable changing the timing without pulling the mag.
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12-06-2021, 08:40 AM | #6 |
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Re: Flathead Timing Covers
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Gramps |
12-06-2021, 11:53 AM | #7 |
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Re: Flathead Timing Covers
He's trying to put a front-mount angle drive magneto setup on an 8BA. Pete has it all covered.
The only thing I'll add is that it is important to have the right early cam that matches the depth of the angle drive. I've seen Vertex Style angle drives with quite a few different drive lengths (the steel shaft that interfaces with the T-Slot in the cam). Also, most angle drives that I've seen use the 3-bolt early timing cover - not the later 2-bolt cover. Last edited by Bored&Stroked; 12-06-2021 at 06:14 PM. |
12-06-2021, 04:15 PM | #8 |
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Re: Flathead Timing Covers
While not pertinent to this thread, the previous mentioned adapters to convert an early cam to a late one could work ok if they were made and installed properly.
The two I have seen in the past 50 years were junk. The gear ran out .012 and there was NO oil hole through the enter. There should be zero runout. Aside from that the cam needs to be drilled in two places for these to work. |
12-06-2021, 06:18 PM | #9 | |
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Re: Flathead Timing Covers
Quote:
Personally, I would not use any of the adapters I've seen . . . which means I'd probably have to make my own. |
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12-07-2021, 05:45 PM | #10 |
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Re: Flathead Timing Covers
Thank you everyone for the information. I plan to build the engine using all vintage speed equipment from the late forties. Then I will have to find something to put it in. You have been a great help.
Thank you, JW |
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