broadens the powerband
Brainstormin' 440 vs 5.9 ...
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I agree 100%. Every single Desktop Dyno program I ever ran picked up an appreciable amount of bottom end torque and also had a broader and longer torque curve. But that's only a simulation. Can be a good one though, as long as you include enough info.
Yes, just decked the block and re-ring and new pushrods. Then of course cam and new springs and they really come alive.
Tom
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No, I didn't cut it on purpose as I wanted the intake to sit higher up on the head port. That way I could straighten out the roof where curves in at the face. Sometimes depending on how the bolt holes on the intake are drilled doing this requires a little round file work for the bolts to clear, but it's nothing that hurts anything.
Tom
With stock pistons, what compression did you get to cutting the block 0.100? That would leave the pistons down ~0.060 in the hole
I have a retired guy who will deck both sides for $100. He might be $125 now, but he's still the cheapest around and he did dozens of them for me in the past
Tom
That is cheap. Very cheap.
We charged more than that back in the 80s when I worked at the machine shop running a Storm Vulcan 85B Blockmaster.
I like the 85Bs , couldn't find one close when I was buying. I got a good deal on the 570 a couple hours away.
My buying days are over now, and everything pops up close at fair prices.
It’s a shame someone doesn’t make an inexpensive drop in (balanced to stock LY rods and 1.922 C.H.pistons) 4.05 inch 440 crank. Moving the piston up a little over an eighth inch in the bore (not to mention 35 extra cubes) would make the smog and motorhome 440’s all over marketplace a lot more attractive.
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Yeah they are badass machines when they're in good shape. Really old school, but they get the job done.
Babyblue66
Cool dude
I also built a 1977 440, 7.5 to 1, mild porting, Hughes Whiplash cam 229/242 on a 107 with I think .518 lift, CH4B, 750 holley, headers, and it made 416hp 465tq on the dyno.
I don't know how fast it was, I never got it to a drag strip. That engine is now in my 66 coronet wagon with exhaust manifolds and a smaller cam. It ran real strong in my 70 coronet.
If I was you I'm selling all of that big block stuff that these guys say is worth a pile of gold. I'm putting that money in the magnum engine and it's going to blow the big block away. Unless you spend a lot of money on the big block. If you sold all of that big block stuff you could easily afford pistons, cam, intake and home porting on the magnum and the thing will make big horsepower then and be easier to work on.
Interesting take... and maybe I should consider selling more than just the BB stuff, and build some actual HP
I'm actually tossing the thought back and forth of which to put in Dad's truck... the 440 or 318. And I'm serious.
I think that would be a nice home for a mild 440, especially since it would make best under 3,000 rpm power.
Where the 5.9l can make similar above 3,000 rpm power and torque than a low cr 440, which is where your mainly gonna be At on the track. With the right cam and heads, ported and or aftermarket the 5.9l can make all the power you would really be interested in.
I always like to have something ready for opening day in the Spring, something I improved on. I want it to be the '80 truck. Whatever I do to Dad's truck will most likely be down the road as the slant runs excellent.
33IMP
Well-Known Member
If your dad pulls a trailer, or loads the bed heavy, put the 440 in . Otherwise..... the 318 would be fine. Heck, if the slant runs good, and he's not towing your race truck to the drags with it...... slanty forever!
If you want to pm me. I can tell you how to build a really cheap 368" engine that makes loads of power.
Dad's truck is actually my truck now. He passed last year. I don't plan to pull anything of substance with his truck, but I'm just not big into slants >> LOL
.040 over 360? Post your recipe here !!! We all like cheap and powerful!!
Very nice
I'm looking at that cam pretty hard....
33IMP
Well-Known Member
If I remember right.....
The heads on those 7.4 pistons are thicker than ****.
So.... throw a 4.150 crank in it, whack .050 or so off the pistons (whatever zero -decks em) and fly it!.
Dirt cheap 500, with 11 to 1. (Or whatever, depending on how much you cut the pistons, head gasket thickness, and head used. Could be 9 to1, or 12!)
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