Oldiron440
Big blocks rule small blocks drool!
You can disagree but I’ve pulled stock piston pieces from the pans of at least three 440s over the last forty years that I can remember. These were cores but I’ve also seen plenty of broken skirts.
Brainstormin' 440 vs 5.9 ...
- Thread starter 318willrun
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It would be interesting to see the torque curves of a 440 and 360 built in similar fashion (like I posted in post #433) layed over each other from the same dyno. I'll dyno them. Who wants to build them?
I just put them together and install them. They wouldn't be any faster or any slower if I had the numbers on paper. What they do, they do.
Here are the numbers and paper I care about (see below!).... and more importantly... How did that number come to be .. Because with me, it's not how fast you go, but how you go fast!
Here are the numbers and paper I care about (see below!).... and more importantly... How did that number come to be .. Because with me, it's not how fast you go, but how you go fast!
Yes, same compression ratio etc. like I posted in post #433. Either low or high compression but same for both. In this case I'm more interested in actual numbers than numbers derived from power per cubic inch. Not that those numbers are meaningless but in this case he plans on drag racing it and the drag strip doesn't care what cubic inch engine it is.
I'm really looking forward to working with the 440. Yes sir!
All you need to do is find someone to build a 440 in similar fashion to your 360 and see if you can make that 12.9 a smaller number.
I think it would interesting to see what you can squeeze out if her.
Why would you
Yes, "build" . As in "put it together" because it ain't gonna put itself together.
I think the 440 will run out of rpm's with 4.30's. But, one never knows. The 5.9 crossed the line at about 5500 or so
I could build it similar. (what is similar??) Will the heads be similar in port and valve size? If you mean same size cam and same compression..... Anyways, I never intended this to be a 360 vs 440 but rather which with minimal money would lower the ET of the truck the most
List of the things that the 440 has the advantage of just as it sits.
- Larger tube headers.
- 80 more cubes
- Bigger intake valves
- Bigger exhaust valves
- Bigger/better ports ??
- Much lower mileage
- compression (we assume)
- little larger cam
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accurate description too... LOL
Well stop all the blabbin and yip yap and get with it!
Track don't open till April.....
He's trying to talk himself out of it. lol
You and I both know (at least I do), with a little work and a few parts, that 440 will stomp all over that 5.9.
Plan is to build the 440 at some point. And when I do, it will stomp all over the 12.9 ET.
80 more cubes. If he comes within ONE compression ratio of that 360, the small block is done.
Track don't open till April.....
.030 more off the heads should put it pretty close, that put them at .060 total
Lets see what it does as is... then maybe some E-streets, pistons, cam or something...
It's your project.
Read post 433.
These are bigger in proportion to the 440 being bigger.
Size for size the Magnum port is a modern more efficient port. The magnum heads is a closed chamber design. The best you can do to keep the heads apples to apples is to do some very basic porting . If you do this yourself it will be at minimal cost. While the valves are out you could back cut the intakes. You can't fix that your heads are open chamber and have no quench.
Maybe , but i would be willing to bet your 200,000 mile cylinder walls are in better or at the least no worse than your 440 cylinders including the one that was rusty.
You could do a compression test to see if you are down on compression on your 360. As good as it runs you may find the compression is still good. Have you done a compression test on the 440 yet? As far as compression ratio this is where the 360 has an advantage and if you want to squeeze more potential out of the 440 anything you can do to help it out would be good. But this will probably cost the most to fix. Use the thinnest gasket you can get if your budget doesn't permit anything else.
Of course you should change the stock rv cam from the 440. I'm not saying you should put the exact same spec camshaft in the 440 as the 360 but rather something that is proportionally the same as the 360 as a minimum.
The goal is to make 12.9 a smaller number. Right?
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well, let me try and clear this up. I have zero intention of "building them similar" and "let them battle it out". LOL. My goal is to lower the trucks ET. I will build the 440 with zero regards to the 5.9. All intent will be a 440 that will lower the ET substantially. But I plan on running it as it is just for my own curiosity, and others appear to have interest as well.
I get it. I like it. I think it's cool you wanna do the 440 "as is" for like a base line. What bolt ons do you plan (if any) like headers and such?
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