4.56 and 4.30 factory gears - Team Camaro Tech
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post #1 of 14 (permalink) Old Sep 3rd, 19, 05:57 AM Thread Starter
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Frank
 
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4.56 and 4.30 factory gears

Any special value those factory gear sets ?
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post #2 of 14 (permalink) Old Sep 3rd, 19, 06:05 AM
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Ed
 
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Re: 4.56 and 4.30 factory gears

Never knew they made a 4.30 set.
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post #3 of 14 (permalink) Old Sep 3rd, 19, 06:42 AM
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Re: 4.56 and 4.30 factory gears

4.56s are only good for 1/8 mile drag strips. I wouldn't want them for anything else. Never heard of 4.30s....
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post #4 of 14 (permalink) Old Sep 3rd, 19, 07:34 AM
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Re: 4.56 and 4.30 factory gears

One special memory value of a 4.56 geared street car. I was 17 it was 1974 in the LA Beach area and worked at Jack in the Box on a busy street. Saved up and bought a 55 Chevy 2 dr post car sky blue is was a friend of someone from the Box. He built it for his wife as he told me a grocery getter. Nothing directly was said about the 4.56 posi under this car but the more i learned i loved. I thrashed that car and none of the fun would have been the same without the gears. Not a day would go buy someone would comment on the car as they came through the drive through.
4 times some ss 396 chevelle wanting to race me in the worst way lost to the chevy. I would tell them i bet $20 when i hit second gear I would turn back and look at them. They all laughed and did not really drill me about my gears and I would be clever and ask something about does it ride nice on the hwy and get comformention about hwy gears. (Ha Ha a burn out contest against a drag race i would think)

This was near LAX and some pretty open streets were around. I had the perfect spot already planned and would get the $20 leave it with the other gal at the counter with mine and off we would go on my morning brake. Every time i would bang second and look back at them in a cloud of smoke in almost the same place and I was goooon!! 2 quick turns back in the perfect parking spot by the back door and drive through visible, and grab my money. Minimum wage was $1.60 and that was a $375 car. So $20 bucks was a nice payday.
So Pete is right great for 1/8 mile drags.
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post #5 of 14 (permalink) Old Sep 3rd, 19, 08:34 AM
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kevin
 
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Re: 4.56 and 4.30 factory gears

mine came with 4:88s. not much fun on the street
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post #6 of 14 (permalink) Old Sep 4th, 19, 08:06 PM
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Ron
 
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Re: 4.56 and 4.30 factory gears

I raced a built 302 with a M21 (2.20:1 1st gear) in a 71 Vega with 4.56:1 gears. It was a wheel stander. Then went to a DNE 5 speed with a 3.26:1 first gear and found that I couldn't shift before I pegged a 10K tachometer. Had to change the gears to a 4.11:1 and then to a 3.73:1 to get a better ET in the 1/4 mile.
Don't know what transmission you have, but you will need an overdrive to enjoy a 4.56:1 gear on the street.
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post #7 of 14 (permalink) Old Sep 4th, 19, 09:19 PM
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Re: 4.56 and 4.30 factory gears

I have a set of early 68 GM gears for sale
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post #8 of 14 (permalink) Old Sep 4th, 19, 09:20 PM
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Paul
 
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Re: 4.56 and 4.30 factory gears

4:56
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post #9 of 14 (permalink) Old Sep 5th, 19, 04:53 AM
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Steve
 
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Re: 4.56 and 4.30 factory gears

Have had 4.10s in my car mostly for years. I put 4.88ís in it for a little while but it was too much. For a couple years i had a 64 Chevelle saturday night special with 5:38ís but only used that if the camaro wasnt enough. I wish i had that chevelle back.
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post #10 of 14 (permalink) Old Sep 5th, 19, 03:56 PM
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Re: 4.56 and 4.30 factory gears

Just went back to 3.73's in my current Z after using 4.10's. In the 70's I ran 4.88's in my first Z, and ran 4.56's in this in the late 80's into the 90's.






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post #11 of 14 (permalink) Old Oct 15th, 19, 02:45 PM
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Re: 4.56 and 4.30 factory gears

thought this was a WIW thread on gears not tell us about your old cars thread?

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post #12 of 14 (permalink) Old Oct 15th, 19, 04:48 PM
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Re: 4.56 and 4.30 factory gears

The value will be only to a guy wanting low gear set. New gears are not that expensive and doubtful the factory gears will fetch a premium

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post #13 of 14 (permalink) Old Oct 15th, 19, 06:33 PM
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Re: 4.56 and 4.30 factory gears

Never heard of 4;30 in a Chevrolet or 3,90 but Pontiac had a 4;30 gear set and I believe 3;90 also. way back I owned a 67 ssCamaro coupe that I bought as a rolling chassis, the engine was blown good 4 speed and 4;10 gears.I built a stout 355 for it with domed pistons and 186 fuely heads it was an LT 1 plus with a Hot General Kinetics cam. it was a beast for the day. Long and short I blew the rear end. The only thing available for miles around was a 67 / 68 firebird rear that I bought for a C note drum to drum and everything was good. I believe I had to change the rear u joint . it popped right in the guy in the bone yard told me it was a 4;33 posi when I bought it. that one did not blow up. It was great for the stop light acceleration tests with other cars but tough on the highway at anymore than 55 / 60 mph . Alex
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post #14 of 14 (permalink) Old Oct 15th, 19, 09:41 PM
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Re: 4.56 and 4.30 factory gears

Quote:
Originally Posted by 68lowered View Post
4.56s are only good for 1/8 mile drag strips. I wouldn't want them for anything else. Never heard of 4.30s....

You'd love 5.57's, 5.86's or 6.17's then. Had all three in my small engined drag cars.

4.56's used to be common street fare for stoplight to stoplight cruising when the drive-in scene was in full swing.
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