Cubic inch dilema

Something Charlie wrote in a recent posting, got me to thinking. Not always a good thing. Me thinking that is,not what Charlie writes.

I have the option of building one of two engines. A 523ci SCJ headed engine or a 547ci. I'm a believer in the "no replacement for displacement"
However there is a restriction on this build that makes me think the smaller may be better,that is runninhg a TorkerII due to hood clearance.
The car is heavy 37-3800Lbs,C-6 with 4:11 gears and a smallish 275 tire.

So big cubes to compensate for the intake or build small?

Thanks.

let G dog take you for a ride and there will be no question what to build.  

Big engine for the win.

Horsepower will be about the same ... the big engine will exhibit more torque ... take your choice.

In the comparison and 20 cu in, the cost should be the first driving concern. As your probably talking the difference of two cranks, for the average build, the 20 to 30 hp difference you'll see, you'll not notice. Sounds like a cruiser, so either will light the tires when you want to show off. Otherwise the rest of the time part throttle cruise, no-one will know the difference. Now dedicated race car, 1000's of dollars have been thrown at combinations to get 30 hp.

The Torquer intake is not as much restriction as most think, if it is not a race deal. Just port match the entrance to the runners to match the heads into the runner about two inches.

Also just clean the ridges out in the bowl and blend everything in for a noticeable in the seat of the pants feel.

The cost of the rotating assy is the same. and all the horror story's i have heard about piston wear and cylinder side wall loading, well lets just say I have built a bunch of these 4.5 stroke deals and have yet to see what they say will happen.

The rod stroke ratio is basically the same as a stock 454 Chubby. (if you use the 6.8 rod, which is what I do)

If I build a stroker, I build a 4.5 inch one or stay stock stroke.

Gordon's  Torino street car will pin ur butt in the seat in high gear from 65 mph till you crap your pants and let out of it.

It was still pulling at 145 mph like it did at 80 mph. Torquer intake and  i think it had a 950 4150 carb.    

Drove out like a stocker, smooth.

JMHO..............

One other thing his car is 4600 lb and has 3.89 gears. 7.00 1/8th mile just like it runs on the street, mufflers and all.

Go big or stay on the porch......

547 just sounds better when you say it. Go for the Gusto.  

Hell,that was easy! 547 it is. Dilemma solved. I hope to start assembly this week,followed up with a dyno session.
Should time allow I will test the TorkerII,Victor and Victor Dominator manifolds.

Thanks guys.

I don't see a dilemma. 4.5

Do you want to hook up on the street, on street tires, and go fast, or just make smoke and noise? That is the question.

Slicks on track surfaces is a totally different question.

JMO,

paulie

Your not going to hook either one on the street.............. And it does have a mechanical rheostat on the floor board,  

IDT-572 wrote:Your not going to hook either one on the street..............  And it does have a mechanical rheostat on the floor board,  

It does require an EDUCATED right foot to operate it correctly ... 

With all the low horsepower new cars in the market for the last generation along with wide sticky tires, it has brought an abundance of people who treat the accelerator pedal as though it is a light switch.

driver mod......

Repost.....

I'm just saying mo cubes is not always mo better. Depends on the situation. Spinnin' ain't winnin'.   Or maybe my throttle switch is just defective?   

paulie

If you cannot put to the ground it is just a waste. All wheel drive helps if you want to go there...