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camshaft question?

Jimmy Rickards

Jimmy Rickards

Well-known member
Had a new camshaft for sbc gave to me. It had no paper work just the box it is a AC DELCO part #10185071. The numbers on the end of the shaft are 395 fm84 and 340 99R. I called the local Chevy dealer I guess nobody works in the parts department. Just trying to find out lift, duration,and Rpm range. Any help would be appreciated. Thanks
 
Found this by "Googleing" the part #

10185071 - Hydraulic Roller Tappet





This hydraulic roller tappet is used on the 5.7-liter H.O. 350 ZZ3 & 4 engines. The duration at lash point in degrees (intake/exhaust) is 275/280; duration at .050" tappet lift (intake/exhaust) is 208/221; and maximum lift with 1.5:1 rocker ratio (intake/exhaust) is 474/501. Valve lash is zero/zero and lobe centerline is 112 degrees.
 
fla curdog said:
THANKS THIS HELPS ALOT.
Click to expand...

Note, that cam needs to be used in late-model factory roller blocks, with the appropriate timing set. It can be used in older blocks, but the cost of the retro-fit lifters gets very pricey, and then you should consider the exact cam you need if you're going to spend that kinda cash. But if you have the right block and are on a budget, you'll like that cam in a 350-375HP aplication. If you wanna wake it up just a little and don't have rocker arms for it yet...Put some 1.6s on it. Best to just use em on the intake side. And if you need it to make a little more power at RPM retard it 2 degrees. JMO

Felber
 
I would try and run a little different cam if possible! You can save money in a ton of places but the camshaft is one area you should always run the grind that's best for your combination because it will make your combination work it's best!
 
Thanks fellas . I dont have a roller block will probably give it to someone who can use it. As far as I can tell it is an older stock 350 I am wanting to wake up. Picked up an Edelbrock performer intake could probaly use a set of heads any suggestion on cam size or brand . The boat is a 12 by 7 3/4 deck with a 2to1 rotator and 3 blade 78 inch stumppuller. Thanks JImmy
 
Dave is absolutely right, and that's why I have a mountain of used camshafts in the shop....That's the last place I save money, BUT once in a while I find a particular combination that suits one, hence why I tried to tell you how to use it best. But based on your statement that you had a cam gieven to you, I pretty much assumed you were doing things on an absolute budget.

If you have a basically stock 350 with 9:1-ish compression, with your box and prop, that cam won't be very far off to get the job done if you use the tricks I mentioned. That cam is designed to have a smooth idle and be easy on parts (Mainly the substandard stuff that comes in those engines) If you have a good cylinder head, a lil more comprssion and can wind her up a bit, you'll wind up liking a much more aggresive lobe, considerably more duration @ .050 (Especially on the intake side) and less lobe seperation. JMO

Felber
 
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