340 x-block vs. 410 stroker ?
- Thread starter j par
- Start date
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dirty white boy
50 yr old Juvenal delinquent
you can argue torque and HP and rpms till cows come home but that only matter if torque and HP are perfectly applied threw the run with proper traction by both cars!!! both running 4 speeds so launch and shifting skills come in to play, and ultametly be the deciding factor here!
ir3333
Well-Known Member
all kidding aside..it's just physics.
In a 4" stroke engine each piston will travel 16 inches for 1 rpm.In an engine with a 3" stroke the piston only has to travel 12 inches for 1 rpm.
So at 5000 rpm the 4" stroke engine piston will have to travel 5000 x 4" or 20,000 more inches than a 3" stroke engine, so it should take longer to get there?
these 2 engines are just different in the way they make power.
yellow rose
Overnight Sensation
281/281 seat
255/255 at .050
.3875 lobe
1.6 rocker
.620 gross lift
.606/.608 net lift
105 LSA
105 ICL
How heavy is that piston on the end of the rod???
Sonny's engines seems to have little trouble getting their 5 inch stroke engines to spin 8,000 plus.........
Mod Motor Fords have little effort zinging 8,000 plus.....
stroke is not an issue here...............
ir3333
Well-Known Member
I don't know what each engines maximum limit would be.
..maybe the amount of fuel you could get through it or piston speed at some point?
this with compression and ported W2's. Sounds like a 13 sec combo to me. ha ha whatever you say.
yellow rose
Overnight Sensation
I'm not running the W-2's. Yet. If I was, I'd be netting .700 lift not the .600 I'm running.
Haven't made a run on this combo yet. So I have no idea what it will run. Had I know all this other crap was going to go sideways, I'd have put it on the pump.
j par
Well-hung Member
Alright easy easy! We need some build up here I think YR will agree we're both the type to NOT Rundown and f*** one of those sheep, we want to walk down and f*** them all in our do time you get this a little let's have a little fun with it first FYI it's not going to happen tomorrow at sundown LOL
j par
Well-hung Member
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Late comer to a quickly growing thread!
I'll answer this question simply!
I have met some really smart and crafty HillBilly people.
I have met some stupidly super seriously educated Ivory league people how should be shot because we some how, by sheer luck I'm sure, Darwins law didn't get them.
Never under estimate the American Red Neck and the hill billy cousins. Not matter how much there family tree looks like a flat pole or what kind of drugs the did while getting pregnant. It don't care if you think they eat paint chips at the movies I nstead of potato chips.
Just when you think your smart, that's when you ge done!
j par
Well-hung Member
Nice explaination of "country dumb"
j par
Well-hung Member
Honestly for a 13-14 second car I wasn't expecting such a large cam. This combo is 12 second or less. And I like it !
Bottom line, this should be fun no matter what happens.
All in fun right?!?!
All in fun right?!?!
j par
Well-hung Member
My 410 rev's 8000+ no problem and extremely quickly. My heads stop flowing at 5800. I can shift @ 6200 or 7200 rpm's or higher but still get the same et so why ?
ir3333
Well-Known Member
this is never an exact science.I remember reading some exitensive intake manifold tests from one of the more popular Mopar specific shops who everyone is familiar with.
A lower flowing manifold (not the lowest) with very unbalanced runner flow made the most Dyno power on the engine used?
MOPAROFFICIAL
Oogliboogli
My eyes are melting
So what is the "tale of the tape" here? Jpar has a strip car with a 410 and a tunnel ram and 4spd. YR has a street car with 340 single 4bbl and a 4spd. Jpar has more CI and one more carb and YR has a bigger cam. I assume jpar has a lighter car? What other particulars have been left out? YR hasn't been to the track yet and jpar has. YR has DOT tires and jpar has slicks. Anything else?
yellow rose
Overnight Sensation
That's why I asked if this is going down on DOT's. I really REALLY don't want to tear the car up. Like I said, this pig would have the tunnel ram on it if I didn't want to store the original Raisin Bran hood somewhere.
j par
Well-hung Member
I got on my DOT tires right now basically the back tires and rims or off a 05 Hemi Magnum wagon there 18's with the 225 60 I can't remember. My problem is the powerband is so abrupt between 3 Grand and 6 that the rear tires never make contact with the road between these RPMs and it gets very hairy on the street.
j par
Well-hung Member
Okay I'll try and address these at a time. yes my car is a bit more of a strip car has license plates on it and so forth but I have stripped the bumpers off the hood off the interior out but I have welded in a roll bar and well that in some other things too to make up for the weight of the Interior a little bit. As far as my two four barrels compared to YR's one 4 barrel I would switch manifolds and carburetors with him for the race no problem. I know my dual quad tunnel ram is more of a showpiece than an actual good functioning carburetor. And I may have been recently drag racing over the last couple years a little bit but from what YR says he has a vast knowledge and experience with drag racing. I think my car would be literally unsafe with street tires. I think everybody's missing the real key here the hillbilly doesn't have a lot of experience doing head work, and YR is a experienced Machinist he probably has his heads flowing quite good. I can have all the cubic inches underneath the heads and all the carburetor I want above the heads but they can't neither one of them make it all squeeze through the tiny holes that my head's have.
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yellow rose
Overnight Sensation
You can run slicks if you want to. If you don't feel comfortable on DOT's then don't do it. I ran slicks on my Demon years ago and just tore the **** out of it. Somewhere I have a picture of it pulling the tire at PIR. But, it started cracking the paint at the B pillar, tore the rear seat bracing out of it, started pulling the front spring eye mounts out of round and some other crap up front. I should have never A) put slicks on that car and B) never sold that thing. I was the second owner of it. But I was young and stupid. Plus, the clutches I used back then were just stupid.
I think if I'm careful I can get the car to run pretty easy mid 11's on the DOT's and not kill the car. On bite, it might run 11 oh' but then, **** starts getting torn up, I need a roll bar and away it goes.
I'm trying to preserve a fairly well preserved day 2 car. And my sanity.
yellow rose
Overnight Sensation
can I come and watch, I will break out my white cowboy hat, so I'm easy to spot.
What's a matter YR, can't you find a throttle stop that adjusts that far down.....or are you trying to figure out how many plug wires to leave off...................??
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