which is faster-my friends 71 340 4 speed cuda has a balanced engine with cam headers intake and carb-with 3.55 rear end gears-or my other friends 67 GTX 440 automatic with 3000 stahl cam headers intake and carb with 3.23 gears-who would you bet on-i have seen them street race but who would win a 1/4 mile speed contest daren

I say the GTX. Big block with a converter to get it going should outrun the relatively stock smallblock.

I would likely give the nod to the big block although the 3.23's may hurt a little.
It could easily be a drivers race.

GTX should be lighter, right? gtx gets it.

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GTX should be lighter, right? gtx gets it.

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Uh, no, not right

i bet the weight dif is not that much even with the hemi

Break out your wallet, I'll take that bet!

If the guy can shift a 4 speed I'd put my money on him,
also if they are running slicks. If on street tires
I might go with the GTX because of the gear

Well i'm not a Mopar expert like yourself, thats why in my post it was phrased as a question, so what is the weight difference? I have never owed the two cars we are talking about.

Both cars are similar in wiegh if equipped the same, the Cuda may have a 100-200 lb advantage as a roller without an engine. The small block vs big will be the biggest difference, and that will undeniably going to favor the Cuda. Overall you are probably looking at 2-300lbs difference between them, maybe more.

the car on the right

Way too many variables to say, but if all things were equal my money would be on the GTX. The 'Cuda's gearing and weight advantage are too small to make up for the difference in power...in theory anyway.

Dave

Way too many variables to call a winner here. Depends what cams, depends what headers, depends if the timing curve on both cars are set up correctly and the driver is a huge deal in these matchups.
I would bet a no option 440 automatic 67 GTX weighs within 100lbs of a small block 4 speed 71 Cuda but that could depend on options and how much bondo is in each car (seriously).
If both cars were stock I would bet on the Cuda if I was driving it, the 71 340's were the best year and the 67 GTX was hampered by a too small carb, a 71 340 Cuda 4 speed with 3.55's could touch a 14.0 if tuned and driven correctly, a lot of stock 67 GTX's were at 15.0

Sheldon

's on the Cuda all other things aside, the 340 was close to the real power output of the 67 440 the 340 was underrated the 440 was not making real 375hp in 1967

I love messing with big blocks,

Back in 1973 my friend had a 67 440 RT basically stock 440 4spd headers 3.54 Dana and slicks. I recall its 1st pass at the track was a 14.57 I know it went faster but not much that I recall can the 340 take a 440 Yes I have done it dozens of times I also have lost against the same 440 traction driving skills and In one case I blew my clutch apart. I love to watch and participate in races that are close

tough question-back in the day i raced my 71 340-4 speed Challenger against a 67 4 speed 440 GTX-it was prtty much a toss up-winner depended on who drove the best race-at that time my 340 was running 3.23 gears and the GTX was running 4.10 gears-i wonder what would have happened if i had 3.91's in the 340 challenger---previously the GTX had 4.56's---with the 4.56 gears it wasnt even a close race-the 340 car won every time-the GTX just didnt have enough top end to beat the 340

I gotta give the edge to the bigblock GTX. The E-bodies are not all that light as they weigh just about the same as a B-body if equipped the same. Now if it was an A-body 340 it would be a very close race but in this race I like the bigblock torque to take the win. Ron