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Old 09-07-2022, 02:31 PM
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It all gets confusing because everyone's idea of what is too radical is drastically different.

Part of that has to do with what the individual is looking for or expecting, and also a part of that really has to do with ones tuning ability, and where the cam is installed, and how much compression the engine has.

For example, the cam you have, being 230 @ .050 and on a 114 LSA, When I install that cam in a 455 with the right ICL, and get the timing dialed in where it should be and the idle circuits of the carb correct, that cam will idle baby butt smooth and most people would have no idea it has that much cam in it. I could make it work with a stock converter in a 455. It'll make good power, I would expect 425-450hp in your combination and 500 ft lbs. of torque very early in the rpm range.

Now if the install position is a bit retarded, the initial timing not optimized and the idle circuit a bit on the lean side, then it's going to have a little bit of lope. Not much, but some.

Step up to the cam mentioned, a 236 @ .050, to me that's just starting to get somewhere with a 455 street engine. On a 114 it's still pretty smooth with a slight lope.

Here is a 239 @ .050 on a 112. It works the power brakes and AC just fine and made 13 inches of vacuum up here at 5,000 feet. It's installed on a 106.25 ICL to get the intake/exhaust ratio I was looking for, and timing/carb are dialed.
It idles nice and only drops 150 rpm when put in gear.

https://youtu.be/AOqwz3QlO5k

Dad's old pump gas 455 had a Kauffman custom grind hydraulic roller in it that was 254/262 at .050 and Kauffman had that done on a 110 LSA to work with his ported heads. Now that cam wouldn't run the power brakes and was fairly choppy. Still very streetable, dad drove it everywhere for years. I personally don't mind something like that on the street if it's all set up properly.

For another comparison or data point, I run a 242/248 @ .050 on a 110 LSA in my 454 and it runs the AC fine. Brakes needed an extra vacuum cannister, but I eventually went hydraboost on that one. If the LSA was spread out further it would be fine.

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