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EFV-8 Club Forum / General Ford Discussion / What is the "Sweetest" Camshaft for EAB Engine

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Discussion Topic: What is the "Sweetest" Camshaft for EAB Engine

carcrazy

07-28-2018 @ 2:59 PM

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What is the best Camshaft to use in a street-driven Flathead where the priorities are:
Improved low and mid-speed performance
Good idle and Intake Manifold Vacuum
Good Fuel Ecomony
Durability and long life comparable to stock - willing to use a ZDDP additive to reduce wear of lobes and lifters
Other performance enhancing options to be used with this cam are: 4" stroke Mercury Crankshaft, Overbore of .040", Fenton Cast Iron Headers with Dual Exhausts, and a small 4-Barrel Carburetor

camsaure

08-26-2018 @ 11:36 AM

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IMHO the Mercury grind in the 50s is the best. Ford did know what they were doing even then. There has been some research on grinds backed up with data and I would think that best for what you are looking for. The research (cant remember where I saw it) tested many of the popular grinds of hot rodders plus stock, and also gave the specs . The did look into a slightly modified Merc grind but had not tested it yet. Delta cams in WA state can regrind any configuration you want for around 100 bucks. They are nice to deal with also.

carcrazy

08-26-2018 @ 8:10 PM

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Thank you for the recommendation. What do you think of the Isky Max1 cam? It is said to be good for about a 19% improvement in performance over the stock EAB-6250-C cam while retaining equivalent good low end torque.

mfirth

08-27-2018 @ 5:55 AM

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Have a Max 1 in my 8ba & it is good, but would prefer the 8CM mercury cam. Check out the "Ford Barn", lots of knowledge on this subject. mike

TomO

08-27-2018 @ 7:59 AM

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Any cam that has a grind different from stock, will affect the vacuum at idle.

The properties that you said were important to you, are all in the stock cam. The stock cam is designed for driveablity with good performance. The aftermarket camshafts sacrifice one or more of the driveablity conditions for more performance.

If you are going to use the 4" crank and a small over bore, you wont find a better cam to fit the criteria that you specified. A 4 barrel carburetor designed to work with the Ford distributor would give you better performance than stock.

Remember that if you make changes from stock, these changes will have an effect on other parts of the performance. A performance cam effects both carburetion and ignition. A carburetor change can affect ignition and an ignition change can affect carburetion. All of these were engineered to work together with the size and design of the block and intake manifold for the smoothest operation and the best fuel economy of the car. You have to decide if you want a hot rod or a driver or a show car, and when you have made that decision, live with it and the fact that it may be more difficult to sell if it does not run right.

Tom

camsaure

09-03-2018 @ 8:50 PM

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There is an interesting chart and article at www.tildentechknowlogies.com

carcrazy

09-03-2018 @ 10:40 PM

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Thank you for the website. The information contained in it is very interesting.

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