I remember you saying that
Brainstormin' 440 vs 5.9 ...
- Thread starter 318willrun
- Start date
-
We're getting deep again
Why don't you tell us all, I'd like to build a cheap 368.
The way I see it, either way 5.9l VS 440 is you need more cam then where you're at now and some head work couldn't hurt, so basically it down to which you would rather run I don't see a low cr 440 having a huge advantage.
Here's a crate 5.9l as you can see for the extra 80 Cid you're not really gaining much Torque wise, a little more head flow should wake a similar 5.9l up but also do similar to the 440, dealers choice
360 Crate Engine Buildup & Dyno - Crate Expectations
Some reason can't copy paste the dyno results from the above article anymore ?
Mopar Performance 360 cid 380 hp rated
Mopar Performance 360 cid 380 hp rated
Here's a crate 5.9l as you can see for the extra 80 Cid you're not really gaining much Torque wise, a little more head flow should wake a similar 5.9l up but also do similar to the 440, dealers choice
360 Crate Engine Buildup & Dyno - Crate Expectations
Some reason can't copy paste the dyno results from the above article anymore ?
Mopar Performance 360 cid 380 hp rated
| RPM | TQ | HP |
| 2500 | 380.6 | 181 |
| 3000 | 402.9 | 230 |
| 3500 | 415.1 | 277 |
| 4000 | 437.8 | 333 |
| 4100 | 439.5 | 343 |
| 4500 | 437.1 | 375 |
| 5000 | 416.3 | 396 |
| 5400 | 398.6 | 409 |
| 5500 | 388.6 | 407 |
| 6000 | 343.9 | 395 |
Mopar Performance 360 cid 380 hp rated
| RPM | TQ | HP |
| 2500 | 380.6 | 181 |
| 3000 | 402.9 | 230 |
| 3500 | 415.1 | 277 |
| 4000 | 437.8 | 333 |
| 4100 | 439.5 | 343 |
| 4500 | 437.1 | 375 |
| 5000 | 416.3 | 396 |
| 5400 | 398.6 | 409 |
| 5500 | 388.6 | 407 |
| 6000 | 343.9 | 395 |
You have a pm
My BB 727 is at a friends to be rebuilt/refreshed (stock). I'll use the Hughes converter behind the 5.9 if I go 440
Not if, WHEN.
I'm cheering for you, might be the only one. lol
I'm gonna, keep on keeping on and not let the small block guys talk you out of it.
I don't care which one he picks, but the 440 gonna need at least a decent size cam, bigger than what's in his 5.9l to be faster than the 5.9l is now, a little head work wouldn't hurt either, but if he did similar to the 5.9l it would also be faster than it is. Depending what's done to each I don't think the end results are gonna be overly huge from one another, so to me it's what he rather play with, 5.9l is easier cause it's already in but if he wants the 440 go for it.
It appears that actual compression height is 1.912, so the stock piston would only come out of the hole .022 with a 4.15 stroke. That would be right around 12:1 with a Felpro 4.59 bore .051 compressed gasket and the chambers gasket matched to the bore size. If you wanted to get into milling the pistons, then this item could really make things happen, but not at the proposed budget level!
Pardon Our Interruption...
33IMP
Well-Known Member
My comment was a hypothetical, brought on by your 4.04 request.
The crank alone would be double 5.9s budget.
Sure would be interesting if someone would do it.
(I did something similar. Bought dirt cheap dished 400 sbc forged piston for use with the short 400 rods. I lathed the dish off the deck, used 350 pink rods, and zero decked it all. With a small solid roller, and brodix heads, went 6.30s in a light car)
The crank alone would be double 5.9s budget.
Sure would be interesting if someone would do it.
(I did something similar. Bought dirt cheap dished 400 sbc forged piston for use with the short 400 rods. I lathed the dish off the deck, used 350 pink rods, and zero decked it all. With a small solid roller, and brodix heads, went 6.30s in a light car)
greendart408
Active Member
I’m a hardcore sb guy so my vote is swayed lol. That being said when I was 16yrs old in 1996 my 1st motor I raced with was a non rebuilt motor home 360. I put stock x heads on it a 509cam and a strip dom intake and went 12.22@108 and change at 3250. Just used what was available to me. For comparison another friend this summer put together a motor home 440, stone stock non rebuilt bottom end. He put a set of 516 heads on it a mp 484, fenderwell headers in a duster for his daughter’s 1st strip ride. He put a tunnel ram and 2 600s on it. Very 1st time at the track this summer it went 11.63@114 something. Weighed 3100 something with her in it. Just 2 for a comparison for this topic.
I'd be willing to bet the 440 is at least 2 tenths quicker with just a bowl cleanup, gasket match and cam change with the parts he already has. and still have money for pizza. lol
good times!
Pizza !!!
Anyone? lol
Unless he does both, no way to compare.
Why would he, the 440 has way more potential as his budget increases, 80 ci isn't something to sneeze at.
I have a scenario, take both engines and top them with Trick flow heads, do you see where I'm going. lol
I’m taking about your bet, no way to verify.
Not if you look at low cr 440 dyno results, they barely make over 1lbs-ft per cid there making around what a decent 360 makes in torque.
Far beyond what 318willrun wants to do.
abdywgn
dismantler
small block hands down. it's much easier to change spark plugs, even with headers!
You might want to go back and compare the low cr dyno and 380 crate dyno.
You will see the 440 carries over 425 ft lb's from 3000rpm to over 5000, it boils down to how an engine carries torque.
33IMP
Well-Known Member
Imo, bottom line.....
Unless the owner of the 440 (whoever, not necessarily 318wr) does SOMETHING about the 7.4 to 1 comp ratio, the RV 440 will be unimpressive, and a decent 5.9, like 318wr has, will be very hard to beat.
Also, imo, the 440 has more potential, but frankly needs a large investment in decent heads, and pistons, to support the other obvious mods, that everyone does to warm up a 440.
OR, like EM did..... TURBO! (and tires. LOTS of tires! I think EM got 700 ft/lbs out of a turbo motor home engine)
Unless the owner of the 440 (whoever, not necessarily 318wr) does SOMETHING about the 7.4 to 1 comp ratio, the RV 440 will be unimpressive, and a decent 5.9, like 318wr has, will be very hard to beat.
Also, imo, the 440 has more potential, but frankly needs a large investment in decent heads, and pistons, to support the other obvious mods, that everyone does to warm up a 440.
OR, like EM did..... TURBO! (and tires. LOTS of tires! I think EM got 700 ft/lbs out of a turbo motor home engine)
Tim bought big block headers and motor mounts for a reason. So, if he wants a big block, I'll root for it to go quicker.
But again, I will always prefer small blocks. To me, the 17 head bolts per side, and the tin timing cover on a big block, are too much like an sbc.
But again, I will always prefer small blocks. To me, the 17 head bolts per side, and the tin timing cover on a big block, are too much like an sbc.
It's snowing out.... ground is white. Just got home in it
S'posed to be 36 here tomorrow and 25 Monday.
-
Similar threads
