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11-28-2020, 10:10 AM | #1 |
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Best stock 8BA camshaft
Guys,
After 11 months of thrashing my '32 pickup is on the road. As pur- chased it had a 286 8BA installed. The story is the motor is from a 50's circle track car and after freshening I decided to reuse the cam,a SEARS catalog item. The cam had .090 flats at the apex of each lobe which I thought would give a nice rumpy idle. The motor certainly has a rumpy idle plus low power until 3000 rpm, long warm up time up before decent drivability. I now hate this cam and in spring will change it. I'm wondering if there is a stock cam that has a performance edge and the pt# if you please. Gracias, Charlie ny |
11-28-2020, 10:55 AM | #2 |
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Re: Best stock 8BA camshaft
I’ve read on here that EAB and 8CM were a good choice. Tilden Technologies has a good informative website with a chart that lists Flathead stock cams...... Mark
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11-28-2020, 12:00 PM | #3 |
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Re: Best stock 8BA camshaft
I have an 8CM cam in my '51 Ford. The new engine I put in performs much better than the previous one did, but it has better heads, better carburetion, and better ignition, plus the old one was a little tired. According to the aforementioned Tilden Technologies information, it has better numbers than an 8BA cam (.330 lift vs .307). Tilden (at least from what I can see) has no information on an EAB or EAC cam. I for one, would like to see it. (I would expect an EAC to be "better" than an EAB, just like a 8CM has better numbers than an 8BA.)
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11-28-2020, 12:23 PM | #4 |
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Re: Best stock 8BA camshaft
Charlie, I agree with Tubman on the 8CM cam being very nice in a semi-stock engine. I am running one in a 260" Merc with good quench, a 2GC carb and Chev distributor and it performs excellently. Still a smooth idle-maybe just a tiny bit less smooth than the stock '41 Merc cam-but pulls hard from idle to 4000 rpm. From 1500-3000 it's a beast. VERY good warm up manners.
When I built the engine I checked the 8CM against an EAB cam and there is almost no difference despite what the published sources say. In fact, I would bet the difference between the 8CM and the EAB would be unnoticeable in operation...they are that close. After using the 8CM, I would recommend it as well as the EAB/EAC. I do like a powerful engine, and tend to use them briskly... Terry
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"It don't take but country smarts to solve the problem" (Smokey Yunick) '41 Merc Town Sedan / 260" 8CM engine '66 Fairlane four door / "warmed up" 302 |
11-28-2020, 03:12 PM | #5 |
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Re: Best stock 8BA camshaft
The 8CM or EAB are the best stock cams you can use. I've had a Winfield SU1-A in my 39 for 25 years now and really like it. Still a good bit of low end torque. I can start out in second gear if I want too. Have a 3.70 Bronco rear axle. The L-100 is very similar. There are others that have been recommended, but I only have experience with these two. Tilden lists an "improved" 8CM, I've always meant to see if they actually will grind one.
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11-28-2020, 03:26 PM | #6 |
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Re: Best stock 8BA camshaft
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I'm no cam expert, but the Isky Max#1 looks very similar to the Tilden cam. |
11-28-2020, 03:46 PM | #7 |
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Re: Best stock 8BA camshaft
I'll have to take a run over there and talk to them
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11-28-2020, 06:20 PM | #8 |
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Re: Best stock 8BA camshaft
Charlie I can help if you need a nice used EAB possibly a used merc also or can grind merc fresh.
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11-28-2020, 06:50 PM | #9 |
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Re: Best stock 8BA camshaft
If it's ok for me to cut in, I have a question about cams.... I'm collecting parts for a 260, Had the 4" crank ground last winter. I have some nice 8ba blocks, various cams, but some have been just laying across other engine parts, not well supported. Will they sag or take a set like a crank can? If so I may be looking for a cam too. Thanks!
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Owner/Operator of 'Jailbar Ranch' on the side of Mt. Pickett. Current stable consists of 1946 1/2 ton pickup turned woodie wagon with FH V8, 1947 Tonner Pickup (red) mostly stock with exception of a cummins 6at turbo diesel, 1946 Tonner Pickup (green) with 226 cu in 6 cyl flathead, 1979 Toyota landcruiser wagon, completely encased in 1947 Ford Jailbar sheet metal. Ok, cornbinder rear fenders..... 'Rusty ol' floorboards, hot on their feet' (Alan Jackson) |
11-28-2020, 06:55 PM | #10 |
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Re: Best stock 8BA camshaft
Don't think either will.
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11-28-2020, 07:32 PM | #11 |
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Re: Best stock 8BA camshaft
Should be fine, GB...I've never seen one bend from that type storage yet.
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"It don't take but country smarts to solve the problem" (Smokey Yunick) '41 Merc Town Sedan / 260" 8CM engine '66 Fairlane four door / "warmed up" 302 |
11-28-2020, 09:08 PM | #12 |
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Re: Best stock 8BA camshaft
I'm really happy with the EAb cam in the 280. I;m even running rotators with stock springs and a.060" spacer. Low end torque is fantastic and it turns 4+K with no problem. It also has milled EAB heads on it. 2GC carb.
Gramps. |
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