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Old 05-07-2013, 02:13 AM
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what cam will work in this 454

I have a C10 with a 1972 454 that has flat top pistons,oval port heads, performer rpm intake manifold, a 600 cfm holley carb, and full length headers running to dual 3" exhaust. the cam that was in it had a lobe that went flat(I dont know what size the cam is that came out). so i am looking for a good replacement cam thats budget friendly. i just want a cam that has good low end to midrange torque. i am not racing this truck its just a weekend driver. i dont know if the valve springs have been replaced before or not so i am trying to find a cam that i can use with the valve springs that are already on the heads. i found this cam i think will work


Elgin, Hyd. Flat Tappet Cam & Lifter Kit, Chev BB, .440/.440
Chev BB
Lift: .440/.440
Duration: 285/295
Duration @ .050": 210/213
Lobe Center: 114
Strong low speed torque, Smooth idle.

Any suggestions would be great thanks.

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Old 05-07-2013, 04:47 AM
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what are the head castings?
what gears and transmission?

The cam you are looking at will work ok with a stock low compression 454. The lift seems a little low for a BBC, but low is good for a long service life.

Summit Racing has cheap cam/lifter sets that also works well. The smallest BBC cam that Summit sales works nicely with a stock 454. cost around 100.00 for cam and lifters.

I had a BBC that ate cams, and finally figured out the reason. The lifter bores were too tight which cause the lifters to bind up in the bore. The bore needs to be 0.001" to 0.0015" bigger than the lifter. Most of mine were at 0.0005". Ate 3 cams before I figured it out.

I recommend you check all the bearings. The metal particles from the flat cam tend to circulate around the engine and mess up engine bearings.

Run 17-20 degrees of timing at idle, 38-40 total mechanical. Get an adjustable crane vacuum advance canister (30.00 from summit) and set it to 10 degrees and use a manifold vacuum source. So timing should be around 30 at idle (20 + 10). Do a web search " timing 101"

And a 600 cfm on a 454 will most likely will require a 0.090" hole drilled in each of the front throttle blades. This is required to keep the carb in the idle circuit at idle (at more air to reduce the throttle blade opening at idle). The same effect can be made by opening the rear blades a little with the adjustment secondary screw under the carb. Do a web search "How to tune a holley the scientific way".
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Old 05-07-2013, 04:47 AM
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That cam will work fine for what your looking to do.
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Old 05-07-2013, 06:43 AM
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use a roller hydraulic cam and kit,well worth the extra power and/or better mileage.Even if you just change the cam,dont take the engine apart to check for damage,and use a budget flat tappet,also buy the kit
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Old 05-07-2013, 08:31 AM
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Quote:
Originally Posted by 454C10 View Post
what are the head castings?
what gears and transmission?

The cam you are looking at will work ok with a stock low compression 454. The lift seems a little low for a BBC, but low is good for a long service life.

Summit Racing has cheap cam/lifter sets that also works well. The smallest BBC cam that Summit sales works nicely with a stock 454. cost around 100.00 for cam and lifters.

I had a BBC that ate cams, and finally figured out the reason. The lifter bores were too tight which cause the lifters to bind up in the bore. The bore needs to be 0.001" to 0.0015" bigger than the lifter. Most of mine were at 0.0005". Ate 3 cams before I figured it out.

I recommend you check all the bearings. The metal particles from the flat cam tend to circulate around the engine and mess up engine bearings.

Run 17-20 degrees of timing at idle, 38-40 total mechanical. Get an adjustable crane vacuum advance canister (30.00 from summit) and set it to 10 degrees and use a manifold vacuum source. So timing should be around 30 at idle (20 + 10). Do a web search " timing 101"

And a 600 cfm on a 454 will most likely will require a 0.090" hole drilled in each of the front throttle blades. This is required to keep the carb in the idle circuit at idle (at more air to reduce the throttle blade opening at idle). The same effect can be made by opening the rear blades a little with the adjustment secondary screw under the carb. Do a web search "How to tune a holley the scientific way".
The heads are 346236
It has a th400 trans
3.73 gears
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Old 05-07-2013, 11:39 AM
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Quote:
Originally Posted by 454C10 View Post

Summit Racing has cheap cam/lifter sets that also works well. The smallest BBC cam that Summit sales works nicely with a stock 454. cost around 100.00 for cam and lifters.
.
will the summit cam work with factory valve springs?
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Old 05-07-2013, 01:07 PM
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If you don't disassemble the motor and clean out all the shrapnel from cam #1, you are preparing it to eat cam #2.
http://www.crankshaftcoalition.com/w...ips_and_tricks
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Old 05-07-2013, 05:32 PM
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Originally Posted by techinspector1 View Post
If you don't disassemble the motor and clean out all the shrapnel from cam #1, you are preparing it to eat cam #2.
http://www.crankshaftcoalition.com/w...ips_and_tricks
Sad but true!
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