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454 engine question

codytr1 said:
Really if it pulls from say 1500 to 5000 or so Ill be real happy :thumb:
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I have pretty well the same build as the Car Craft article. My cam is the 262 (one notch down from the 268 used in the article). With the 262 it pulls hard from idle up to 4500. Above 4500 it's still strong, but you can sense it's maxed out. That's ok, since I rarely go over 4500 anyways. My combo is K30/454/Th400/NP205/4.11/39.5" TSL's. Great in mud and snow and dd. In 4low using 2nd gear it pulls hard all the time for my wheeling terrain, I never need more. For rock crawling you'd need more gearing than I have.

I run the stock 1975 pistons, and get a low compression ratio. However, the good thing is I can run regular fuel. I have a few friends who need to run premium fuel, and they often complain how much more it costs to fill their gas tanks. Their performance isn't that much greater and they say if they'd do it again, they'd build an engine that could run regular fuel like mine.

I've read good headers will give you the best bang for you buck for some extray power from the 454. I run stock manifolds, but do consider changing to headers from time to time.

With the Quadrajet it runs great summer or winter, daily driver, not finicky at all. Great setup. I love my setup and would do it again.

Codytr1, what terrain type is your wheeling in?
 
nvrenuf said:
The 290's should be good and will help with compression since you plan using a stock-ish bottom end.

I think Scott was thinking about the 990 casting heads.
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I know for a fact the "990" castings are square port as I had those on my race car, I was pretty sure the "290"'s were as well. I'll have to check my AERA manual now to be sure if i'm correct or mistaken.
 
I wheel mostly mud but the Disney rock park is only about an hour from here....My K5 is not my DD so I really wanted to put some horses to the ground.
 
Well guys this was for moot, the guy I got the heads from hooked me with the rest of the motor.... its a 468!!! He lost his job and wanted to know if I wanted the rest of it! His Voodoo cam walked and his crank is already 20 under, so I am going to order a an Eagle crank and get busy! Thanks for your help it is much appreciated
 
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Wicked! Ya you really do want to go with large oval port heads. They'll do exactly what you want.

I've got 990s on the 454 in my z-28 with a 292 comp cam and I'd second confirm they are square port. Ya I wouldn't want that engine in a drive around truck. Though it hauls ass in the camero with the stick!
 
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