455 motor
#1
455 motor
Can any body tell me what the horsepower is on a stock 455 is.I have a 455 that I want to build. I dont want it to radical. All I want is a good sound. It has c heads could somebody give me some good sugestions. On what kind of cam to use. And ehat type of pistons to use. I want to run pump gas. I would appreaciate some good suggestions. thanks
#3
Dave it is a 74 modle with 70 cranke and 70 heads. So I have been told. I have a set of e and c heads. I have been told that the c heads are the better of the two. I have just started to fool with ols. I can use all the advice that I can get. Thanks
#4
The "stock" rating could have been anywhere from 250 HP to 400 HP. The differences were due to compression, heads, valve size, carb, advance curve, and single vs. dual exhaust. Note that not only did the rating method change from gross to net HP in the 1971 model year, but the factory ratings were demonstrated to be conservative, at least in the musclecar years. Of course, since your engine is apparently not "stock", we have no way of knowing what the rating is.
#5
Sounds like the engine has already had mods. hard to tell what you have now. Olds 455's used dish pistons to determine compression the deeper the dish the less compression = less hp. heads, intake and exhaust also make a difference. Sound like you need to make a plan. What hp do you want, thats a good place to start
#6
Do you know witch heads are better. The c or e, I have been told that c heads are better . I would just like to have some good ideas. From pepole that deel with ols motors. I am not really consern with how much hp.I just want a good sound. What I was going to do is install 10.1 pistons. But I dont know what cam to use. When I talk to the rebuilders around here. All they want to build it to drag specs. And that is not what I want.
#7
Do you know witch heads are better. The c or e, I have been told that c heads are better . I would just like to have some good ideas. From pepole that deel with ols motors. I am not really consern with how much hp.I just want a good sound. What I was going to do is install 10.1 pistons. But I dont know what cam to use. When I talk to the rebuilders around here. All they want to build it to drag specs. And that is not what I want.
http://tech.classicoldsmobile.com/95.shtml
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#8
When I talk to the rebuilders around here. All they want to build it to drag specs. And that is not what I want.
If all you want is a good "sound" then I suggest you rebuild the engine mostly stock. A good flowing exhaust with decent performance mufflers will give you an AWSOME sound with a stock 455.
A good place to start would be to determine your budget and go from there. If you know you have to build the engine on the cheap then you should probably keep it stock. If you have some extra cash to spend then you can determine what aftermarket parts you want to buy. Potential aftermarket parts include a cam, intake manifold, and headers or stock dual exhaust manifolds (all of which would increase your HP considerably). You might also consider installing higher compression pistons (I don't think 10:1 would be good if you want to run on pump gas), a double roller timing chain, and aftermarket oil pump and oil pan.
#9
Do you know witch heads are better. The c or e, I have been told that c heads are better . I would just like to have some good ideas. From pepole that deel with ols motors. I am not really consern with how much hp.I just want a good sound. What I was going to do is install 10.1 pistons. But I dont know what cam to use. When I talk to the rebuilders around here. All they want to build it to drag specs. And that is not what I want.
What are your goals with this car? Really.
Do NOT be concerned with sound so much...you can always buy a stereo.
I like mine quiet.
Jim
#10
Stock or mostly stock should still sound awesome.
I suggest you find another machinist.
If all you want is a good "sound" then I suggest you rebuild the engine mostly stock. A good flowing exhaust with decent performance mufflers will give you an AWSOME sound with a stock 455.
A good place to start would be to determine your budget and go from there. If you know you have to build the engine on the cheap then you should probably keep it stock. If you have some extra cash to spend then you can determine what aftermarket parts you want to buy. Potential aftermarket parts include a cam, intake manifold, and headers or stock dual exhaust manifolds (all of which would increase your HP considerably). You might also consider installing higher compression pistons (I don't think 10:1 would be good if you want to run on pump gas), a double roller timing chain, and aftermarket oil pump and oil pan.
If all you want is a good "sound" then I suggest you rebuild the engine mostly stock. A good flowing exhaust with decent performance mufflers will give you an AWSOME sound with a stock 455.
A good place to start would be to determine your budget and go from there. If you know you have to build the engine on the cheap then you should probably keep it stock. If you have some extra cash to spend then you can determine what aftermarket parts you want to buy. Potential aftermarket parts include a cam, intake manifold, and headers or stock dual exhaust manifolds (all of which would increase your HP considerably). You might also consider installing higher compression pistons (I don't think 10:1 would be good if you want to run on pump gas), a double roller timing chain, and aftermarket oil pump and oil pan.
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June 2nd, 2015 09:38 AM