Budget 454
So I don't want to spend too much on the engine because I'll never get my money back.
My engine is currently a 454 early truck motor. All stock except for hooker headers, Performer rpm oval intake, 750 carb. The bottom end looks fine...
I intend to just change the cam and do something with the heads.
Should I get my 049s worked on or get a set of aftermarket assembled heads?
Suggestions and people that want to sell me stuff are welcome!
Product Line: COMP Cams Xtreme Energy Camshafts
Part Type: Camshafts
Part Number: CCA-11-677-4
Cam Style: Mechanical flat tappet
Basic Operating RPM Range: 2,000-6,400
Intake Duration at 050 inch Lift: 236
Exhaust Duration at 050 inch Lift: 242
Duration at 050 inch Lift: 236 int./242 exh.
Advertised Intake Duration: 274
Advertised Exhaust Duration: 280
Advertised Duration: 274 int./280 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.568 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.578 in.
Valve Lift with Factory Rocker Arm Ratio: 0.568 int./0.578 exh. lift
Lobe Separation (degrees): 110
Would this be too much for my little low compression guy? What would this want to rev to? Stock but relitively new converter will work?
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Stick to the basics and use a simple combo, you'll save money and make plenty of power in the process.
XM278H
234/244/112
Lift with 1.8 rockers would be - .597/.600
Would this be alright with those springs? I could step up to xm288h but that might be a bit much for my compression ratio that i would guess will be about 8:1? I heard these xtreme marine cams work well in cars and i like the high lift compared to duration and the 112 lobe sep. Any experience with these cams?
Product Line: COMP Cams Xtreme Energy Camshafts
Part Type: Camshafts
Part Number: CCA-11-677-4
Cam Style: Mechanical flat tappet
Basic Operating RPM Range: 2,000-6,400
Intake Duration at 050 inch Lift: 236
Exhaust Duration at 050 inch Lift: 242
Duration at 050 inch Lift: 236 int./242 exh.
Advertised Intake Duration: 274
Advertised Exhaust Duration: 280
Advertised Duration: 274 int./280 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.568 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.578 in.
Valve Lift with Factory Rocker Arm Ratio: 0.568 int./0.578 exh. lift
Lobe Separation (degrees): 110
Would this be too much for my little low compression guy? What would this want to rev to? Stock but relitively new converter will work?
I just pulled a .618 + rockers intake lift flat tappet roller out of my .060 over 454 with 10.5 compression and loved it even though it would like more compression and it sounds SICK. You could go a little more tame but still have something sick. I drove this car quite a bit. Stall was a 3,800, loved it on the street.
http://cranecams.org/?show=browsePar...tNumber=131311
For about $1,200 you can get some nice factory aluminum heads if you ever want to spend that.
With another track visit my car would have ran 10's on the motor.
I still have my port matched strip dominator intake and a killer street carb and all if you are interested.
Stay away from the marine stuff and get your compression up more if you can, at least 10:1 or something, cams love compression and the 8 will not help anything. I would NEVER run a stock converter with any kind of aftermarket cam.
Remember, if you don't have the complete package it will suck, intake, exhaust, cam, stall, ect ect. Match ann the RPM power bands.
Last edited by JUICED96Z; Jan 2, 2009 at 01:54 PM.
I know what your saying and my original plan was to do all that. Stall and bottom end and all. I know this is not a perfect combo by any means but I am selling the car so no sense throwing money away. Im just freshening this motor a little. I will NEVER get the money i spend on the motor back. So my main concern is with my .630 inch lift valve springs how little actual valve lift can I get away with?
I liked the xtreme marine and the 4x4 series cam because of the wider lobe sep as compared to the more common 110. and the high lift compared to duration in comparison with other series. I want wider seperation and less duration to reduce overlap because of my low compression. i know the rumpidy cam with not so amazing performance is pretty lame but...
Last edited by jarediocamaro; Jan 3, 2009 at 12:33 AM.
I know what your saying and my original plan was to do all that. Stall and bottom end and all. I know this is not a perfect combo by any means but I am selling the car so no sense throwing money away. Im just freshening this motor a little. I will NEVER get the money i spend on the motor back. So my main concern is with my .630 inch lift valve springs how little actual valve lift can I get away with?
I liked the xtreme marine and the 4x4 series cam because of the wider lobe sep as compared to the more common 110. and the high lift compared to duration in comparison with other series. I want wider seperation and less duration to reduce overlap because of my low compression. i know the rumpidy cam with not so amazing performance is pretty lame but...
On a hydraulic flat tappet, you usually don't want over 380-400lbs open and coilbind clearance would be perfect at .060". Then, of course, make sure there is plently of retainer-seal clearance (about .060" as well).






