stroker buildup

[fastamatt]

Hello, all. I'm new to the forum. Just looking for some advice. I am planning on building the 451 sroker. I have a '74 400 that I will be using with 452 casting heads. The whole build will be based around the cam that I have for it. It is a Comp Cams Magnum with a 292 duration, .525 in. of lift, and I believe a centerline of 110. Solid lifters. I was planning on having the main saddles bored out to accept the crank. I believe this is the only custom machining required, right? I will be using 440 rods, also. Anyway, I am just looking for suggestions. I want to keep the build under $2500, so I won't be using ALL hi po parts, but I want 425 hp and 450 to 475 ft. lbs. of torque. Any shared experience on this subject will be appreciated.

[wheels2]

fastamatt,

Some advice, I bought all the pieces to build a 400/451 but pistons, couldn't decide on compression ratio. Well I took some good advice and had the block UT'ed. had 7 good cylinders and one with a core shift that was .275 on one side and .130 on the other side. If you interested in a forged 440 crank cut to fit a 400 mians, and had the throws cut down to 7.25 to fit in a 400 block email me. wheels2@graceba.net
I going with a 451 from a 440 block with avg wall thickness of .245. Listen to some of the people and they will say you some money and pain.

Try
http://pages.moparpages.com/440jim/website/451 buildupnotes.html

http://www.arengineering.com/articles/frame1.hmt

http:www.houstonmopars.org/stroker.html

wheels2

[Hustlestuff]

fastamatt,.

My 451 has mildly ported Edelbrock aluminum heads, Edelbrock Performer RPM manifold, BG 850 CFM carb, 440 crank with mains cut to 383/400 size, 440 rods on JE pistons, Hughes solid lifter cam, 11.2:1 compression ratio. It made 550 hp and 600 ft/lbs of torque on the dyno. In retrospect, the 11.2:1 was too much compression and I would have been better off at 10.5:1. But it runs like a scalded cat and revs like there is no tomorrow. Pulls like a freight train from 2500 to 6000.

With your iron heads, keep your compression to no more than 9.5:1. Might have a little too much cam at that compression and you might want to think about something a step down at 282 duration. The engine should easily make your target of 425 horsepower. You will be happy with your choice, I think. It's a sweet combination.

[23T]

Fastamatt cut the crank mains to fit the block

[wheels2]

I bought all the pieces to build a 400/451, and 383/431 same basic idea. Your forged 440 crank cut to fit a 400 mians, and had the throws cut down to 7.25 to fit in a 400 block, and balanced to you piston & rod combination . Either rod will work(383/400 or 413/440) , I like longer rods. Its customs pistons either way, but with long rods you get shorter, lighter pistons.


Try
http://pages.moparpages.com/440jim/w...ldupnotes.html

http://www.arengineering.com/articles/frame1.hmt

http:www.houstonmopars.org/stroker.html

wheels2