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Author Topic:   Motor Combinations...
jammin
Administrator
posted October 21, 2001 08:43 PM
Tell me something....I watch these guys running V-6's in mods that do really well. From what I see, the situation that is involved is that the RPM range moves up and the torque range moves up in the car, which allows the engine to be more forgiving at the bottom end to keep the tires hooked. Ok....if someone else agrees with this scenario, why in the world will a short stroked small block chevy work just as well in a mod? 327, 307, 283's that are built right are a similar scenario as the V-6. It is a given that there is a weight difference, but overall, why do you think that these motor combinations wouldn't work? I know everyone goes with Cubes, but on smaller slick tracks, these motors might work just as well or better?


bbracer17
Member
posted October 21, 2001 10:36 PM
I ran a 327 with a 2 barrel and it worked fine for me. There are other people I know that run them on all tracks and are very quick. I think the main reason the v-6 does so well is because of the rear weight percentage gain that you get with it.


jammin
Administrator
posted October 21, 2001 10:42 PM
The thing I see is that, take a Cart car....those guys use short stroked motors for those cars and turn them to the moon with short stroked motors and they fly because they are a lighter car and then they can hook them up easier. What is the difference in a modified? Light car....lower gear, more rpm, less torque?


jammin


rjjracing
Member
posted October 22, 2001 11:20 AM
Don't want to go into detail but we run a small motor and only turn 7300 at the most and only been ran away from one night this season. It's not the motor it's getting the car hooked up.If I told you what we ran you would'nt belive me. We have a big motor for sale if interested. lol


Racer4
unregistered
posted October 22, 2001 01:47 PM           
Once I ran a $50 shortblock 327 straight out of a junkyard, I put my heads and oil pump off a blown motor. Ran 7000 rpms twice a lap. But that was a heavy car, and we were down on torque. You just can't beat the short stroke motor's for longevity in stock form. If I had been a better driver and had a better set-up, I am confident the motor was capable of winning.


Oldsmobile13
Member
posted October 22, 2001 07:01 PM
Let me ask you this just for grins. Wouldn't it make sense, that if your engines are restricted by carburetor size, a 6 would have a denser air charge per cylinder than an 8 because the fuel and air, which is limited, is divided between 2 less cylinders, thus creating more power per inch than an 8 cylinder motor?


Oldsmobile13
Member
posted October 23, 2001 10:49 PM
has anyone thought of running a 4.0 ford? Those engines run for hundreds of thousands of miles in street cars so they have to be pretty tough. Never seen a carb maninfold for one though.

bluebomber

holeshot
Member
posted October 24, 2001 02:19 PM
OK, weight to horsepower/torque ratio to rear weight. I dont see any big blocks running but have wondered about the extra weight helping to make the rear tires stick.

More cubes = less rpm = cheaper parts = more reliable. All of that is a given.

It would seem that the real differance in engine size has to do with engine weight and getting that weight through a corner.

So, how much engine weight is too much?

NWModracer
Member
posted October 26, 2001 10:48 PM
Well, I hope to be able to answer you question Jammin, cause I'm putting a V6 car together now. I've been running 383/377 and gearing tall, this V6 has good innerds so I'm agonna' twist it. Builder says the power is 5100 to 7650, and good for a burst to 8000. I'll let ya know. I've got about $5500 in it.


spde
Member
posted November 05, 2001 08:44 PM
Does anyone know the weight that you will save by running a v-6? I have been toying with the idea of running a 6, basically because we don't have a weight rule. The other reason is because the tracks we run are mostly always dry slick. What about runnig on tracks that are 1/4 or 3/8 mile long? Anyone have any luck on either one? Most of our tracks are low to mid banked. I have to talk to my engine guy before I get any real big ideas. ltr good luck


NWModracer
Member
posted November 06, 2001 12:58 PM
I've been debating about building up the 200 v-6 that came in my malibu .... anybodies thoughts?


Flatlander
Member
posted November 08, 2001 11:29 AM
We used to run a292 inline six against the V-8 spanked em a lot of the time but you had to keep it wound up loved to run it though it was an edge at the time we got a weight break but that only lasted a short while Fun though


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