What Engine Compression? 460
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Joined: Dec 2002
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From: Best country in the world
What Engine Compression? 460
I am rebuliding a 460. it's torn down and ready to go to the machine shop. My buddy helping me with the rebuild says i wont be happy with anything LESS then 10:1. My machine shop tells me that that high a compression will take away from the trucks offroad performance and he recommends i go no higher then 8.9:1. What does the offroading community think?
Also, my machine shop is telling me I wont be able to run regular octain gas with a high compression engine.
Tell me what you know, and what you have done.
Thanks, Ivan
Also, my machine shop is telling me I wont be able to run regular octain gas with a high compression engine.
Tell me what you know, and what you have done.
Thanks, Ivan
Hotshot
Joined: Oct 2002
Posts: 18,488
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From: The Big, Oregon
What Engine Compression? 460
With a 460, 8.9:1 is great. You will have better power, and be able to run whatever you want in it for gas. Much more than 9.2:1 on that engine, and you will need premiuim. Go to 10:1+, and you will be on a first-name basis with the local race-gas supplier. Put an aftermarket aluminum intake on it, one of those Truck Avenger 670cfm 4BBL's would probably be great on it, and maybe open up the prots a little. Even on a stock rebuild, this will make tons of power.
Jared
Jared
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Joined: Jul 2002
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From: Paola, KS
What Engine Compression? 460
I run 10.5:1 KB flat top pistons in mine a it runs fine on 92 octane.
Make gobs of torque with a 750cfm Carter on it.
My truck weighs 7200# and will still pull 94mph in the quarter.
Make gobs of torque with a 750cfm Carter on it.
My truck weighs 7200# and will still pull 94mph in the quarter.
Posting Guru
Joined: Jul 2002
Posts: 1,785
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From: Paola, KS
What Engine Compression? 460
[updated:LAST EDITED ON 16-Dec-02 AT 00:25 AM (EST)]I have also never heard of higher-compression taking away any kind of performance whatsoever.
I think I would find a new machine shop.
It is true about the gas, I have 10.3:1 in my 460 and it definetly has to have premium.
I think I would find a new machine shop.
It is true about the gas, I have 10.3:1 in my 460 and it definetly has to have premium.
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10, 1987, 1996, 460, 92, compresion, compression, compretion, cylinder, engine, engines, ford, street, trucks, whats
