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Discussion Starter #1
I’m trying to ID this lifter so I can replace it. I’m in the process of swapping intake manifolds and figured I’d take a close look at the lifters/cam while I was in there and noticed this one was cracked. Just looking around at lifters it looks a lot like the comp cams 249-858-1 on the jegs website but there’s no markings at all on it and it’s measuring a touch longer at about 1.97 rather than 1.93.

The lifter on jegs
 

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I’d be more concerned where the rest of it is?
 

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Discussion Starter #3
After some consideration and measuring of the cam with a dial indicator I think I’m going to swap out the cam and lifters and whatever else is needed with the setup I choose. The cam thats in there appears to be the stock spec 325hp cam, some pretty wimpy specs considering I’m adding an rpm intake, holley 750 street hp and 1.75 summit headers. Springs/rockers/rods all appear to be stock also.
 

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Good choice. I was going to suggest replacing them all anyway since you were going to have re break the cam in anyway.
 

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Discussion Starter #5
Now I need to figure out what cam. I want good street performance, torque, throttle response, not so too concerned with max hp and high rpm performance as i’ll likely never race it but i dont want it to fall on its face at 5k either. I have a 1965 block with 1970 290 heads, likely all stock spec as thats what I’ve found on everything else so far which should put it at 9.5 or so CR? Car has a tko600 with the .64 5th, 3.73 rear, holley 750dp, rpm intake, 1.75 headers&2.5” exhaust. I found info online showing the 290 heads flow well up to mid 5’s in lift.

Would something like this be too much for my setup?

lunati 30110501

Advertised Duration (Int/Exh): 272/272; Duration @ .050 (Int/Exh): 238/238; Gross Valve Lift (Int/Exh): .550/.550; LSA/ICL: 110/106; Valve Lash (Int/Exh): .020/.022; RPM Range: 2200-6500

lunati 30110512

Advertised Duration (Int/Exh): 272/282; Duration @ .050 (Int/Exh): 238/248; Gross Valve Lift (Int/Exh): .550/.570; LSA/ICL: 112/106; Valve Lash (Int/Exh): .020/.022; RPM Range: 2400-6800

the rest of the solid flat tappets look to be for more power higher in the rpm range. Are these too much for a street car? Maybe stick with a hydraulic flat tappet?
 

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if your cruise rpm is around 1500 those cams are too much, consider the Lunati 10110702 hydraulic
 
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