I was wondering if it would hurt anything if I put a used LT4 HOT CAM in my new ram jet crate motor with Fast Burn Heads. Do I have anything to worry about? Roller cams dont really wear down do they?

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L98, 3.27 9-bolt, Hooker shorty headers, custom 2.5inch Y-pipe, no cat, 3inch 2chamber flowmaster, JET AFPR, Ported MAF, Best ET: 13.86 @100mph. 1.99 60'
17 inch ROH "ZS" wheels. 17x8.5(front) and 17x9.5 (rear). Firestone Firehawk SZ50s. 245/45/zr17s and 275/40/zr17s. T56

On the way... Radar Blue 89 Formula, T56, Ram Jet 430, Ram Air, 17inch ROHs.

 

Generally roller cams dont wear much, so it should be fine. With any used part you are taking a risk if you dont know its history, but then again I've seen quite a few new parts that werent a whole lot better. For peace of mind you could check the lobes and journals visually for wear or damage (good idea) and if you happen to have a micrometer you can find out just how much wear there is. The lobes are where most of the wear occurs in any cam, so take a good look at them to make sure they arent rounded off or anything.
Curious, if you are getting a ram jet, which I am pretty sure isnt cheap, why dont you just throw an extra 200 bucks at it (or maybe less, I havent kept track of hot cam prices).

 

In case you want a second opinion, madmax is correct.

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West Coast GM Shootout 2001!
1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.25 @ 107.18 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
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-=ICON Motorsports=-

 

Well, the main reason I dont just "throw another 200 bucks at it" is I am trying to help a buddy out. He has the LT4 HOT CAM that came out of his car and he needs the cash. I know the history of the cam. Its got about 7000 miles on it. He only wants $75 for it, so I figured I would just buy his.

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L98, 3.27 9-bolt, Hooker shorty headers, custom 2.5inch Y-pipe, no cat, 3inch 2chamber flowmaster, JET AFPR, Ported MAF, Best ET: 13.86 @100mph. 1.99 60'
17 inch ROH "ZS" wheels. 17x8.5(front) and 17x9.5 (rear). Firestone Firehawk SZ50s. 245/45/zr17s and 275/40/zr17s. T56

On the way... Radar Blue 89 Formula, T56, Ram Jet 430, Ram Air, 17inch ROHs.

 

Hell yes! The LT4 HOT cam in a Ram Jet engine with Fast Burn heads is the 430 HP ZZ430 engine! Your car should scream!

 

Thats what Im hoping for. I hope it will be enough to put the car into the 12s with the stock gears (3.27s) and good traction. I am hoping for around 110 mph but Im not sure if I will get it or not. Its gonna have a T56 behind it also.

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L98, 3.27 9-bolt, Hooker shorty headers, custom 2.5inch Y-pipe, no cat, 3inch 2chamber flowmaster, JET AFPR, Ported MAF, Best ET: 13.86 @100mph. 1.99 60'
17 inch ROH "ZS" wheels. 17x8.5(front) and 17x9.5 (rear). Firestone Firehawk SZ50s. 245/45/zr17s and 275/40/zr17s. T56

On the way... Radar Blue 89 Formula, T56, Ram Jet 430, Ram Air, 17inch ROHs.

 

With 1.6 rockers, right?

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82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R. 2.93 limited slip. Cat-back from '91 GTA, Accel HEI SuperCoil. AMSOIL syn lubes bumper-to-bumper. Daily driver, work-in-progress (LG4 w/LB9 block, ZZ3 cam and intake, TBD heads, Hooker headers & y-pipe, 3" Catco cat).
57 Bel Air, my 1st car. 0.030 over 396, Weiand Action+, Edelbrock 1901 Q-Jet, Jacobs Omnipack, 1-3/4" headers, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, 3.08 8.2" 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Best 15.1 @ 5800' Bandimere. Daily driver while Camaro was being put together.

 

You may need bigger injectors the ZZ430 RamJet is supposed to have 24lb SVO injectors. They also have different programming. Being a marine engine ECM though the maximum RPM it can handle is 6300 and thats with different programming, I think the stock RJ350 crate comes with 5500? not quite sure. I really like the RJ system though. Not sure why it comes with Fastburn heads the camshaft is tiny and can't use the full potential of the heads. The vortec heads should perform the same, even with the Hot cam.
BTW has anyone seen or have the Edelbrock E-tec heads? They are vortec/fastburn design. My cost is $850 a pair assembled, hmmm

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-Joseph
ASE Master Automobile Technician
Scoggin-Dickey Chevrolet

1967 Camaro (Vortec Heads, GM ZZ4 intake manifold, ZZ4 roller camshaft)
1992 Firebird (Weiler Vortec Heads, LT4 Hot Cam, GM ZZ4 Intake, Edelbrock 750, eventually will be Ram-Jet)