Hell Yeah!!!I'm guessing by a full second. It's tough for 3 speed auto or 4 speed manual to complete with 6 speed trans and small block. My near stock 440 GTX lost to SRT. And it was the gearing more than any horse power difference. I know this because SRT struggled at above highway speed punch where both were at 1:1. Torque curve very different. Hellcat with factory supercharger is a whole different animal than standard SRT. As my GTX would be if I added a huffer.
You want to REALLY wake-up that 383? Add 440 crank to stroke up to 431 build? (Will obviously need lower profile pistons.) Head work to get her breathing? Carb intake mod? I have a Duster with 400 B-block with 440 crank to the 451 build. Big Single carb B1 heads. 10 second car (4:56 rear gear) Ran into 2 Hellcats at test and tune. When light went amber? Never saw them again. The big Z06 Corvette? I think he is still spinning. Never saw him either. I think any power adder is cheating. But they did come from the factory. That's the beauty of the muscle motors. More room and cubes to mess with.
True, and the fact that it will vary the mixture to compensate automatically...One more thing, with a carburetor it depends on the day and how it is tuned.
Mine were always better on a cool/damp day. Cold air = power.
Still true with EFI but the swing in power is not as large.
I agree the new cars are impressive. Getting that much power. I even like the tuner stuff. My dad didn't like my Muscle cars. And I vowed not to be prejudicial. (Tough looking at the Rice stuff.) But have to tip the hat.The new stuff is rated at NET number. 376 HP for a 5.7 versus 335 GROSS for a 383 4 barrel.
NEW Challengers do weigh more, expect 4200 lbs for a loaded 5.7l model. We own a 2015, it is heavy.
The old B bodies weighed between 3400 to 3800 lbs with LA and B series engines, the HEMI added more of course.
You have light weight on your side, they have gearing and horsepower.
My 70 Charger with a 493 is faster than our Challenger 5.7 but I have a 3 speed, the Challenger is an 8 speed. I don't win by a whole lot!
My Cadillac XTS does a mid-13. (Ok, it's a twin turbo 6.) And it holds its own against the GTX. But the 440 will pull once that 6 cyl is done. (of course had to race them) The cad being 800 lbs heavier is what got it. And it's AWD lost some of its 400+ horse. GTX rated at 375 horse? It's more than that. My 3rd car is an '03 Mustang cobra 390 horse. It too lost to the GTX. all 3 are close. At diffraction speeds. But on top end? The old Plymouth will bury its 150 speedo. And the other two.We played with my brother's '16 5.7, totally stock, at the strip awhile back. Proper launches with traction aids turned off we got mid-high 13s out of it. Not bad for what they are but there's a reason dodge started offering bigger and better engine packages with those beasts...
I'm betting that's about right. Assuming 383 is pure stock. Just to easy to upgrade intake and exhaust. I still think the transmission difference is even bigger. Old B-body is starting out at what? 2.5 gear? The 5.7 6-speed? 3.5? Give that 383 same tranny? Alot closer race.The 383 B body would run about a 14.6 to 14.8 at 94 to 96 mph. The R/T probably 13.6 - 13.8 at 101 to 103. So what does that really mean? In the quarter mile, the R/T will be about 150 ft (8 car lengths) ahead of the 383. Its not a little bit, and considering that the R/T probably weighs 600 lbs more, it puts into perspective the power difference between the two engines.