how fast were the old muscle cars?



Re: how fast were the old muscle cars?

Postby Indycars » July 6th, 2012, 8:34 am


Cute and funny story! :D
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Re: how fast were the old muscle cars?

Postby grumpyvette » August 14th, 2012, 8:17 am

"I've got a horsepower question for you.
My 1967 350ci originally from a 1967 SS Camaro (# V1029MT) double hump heads, is "rated" at 295 hp @ 4800rpm.The torque rate says 380 lbs @ 3200 I'm wondering how close to this "RATED" horsepower is this engine? Did they over,or under rate it for a Camaro back in the day (insurance reasons)?
I see that the 1967 302 Z28 was rated at only 290hp @5800,and we all know they were screamers and under rated. Thanks Lead "




its been my experience that few if any of the factorys UNDER rated the engines back in that time frame, example one of my buddies used to own a hemi cuda back in the day and always heard they were vastly under rated at 425 hp, all the magazines said they made 500 plus hp, well when one of the very first dynos in fort lauderdale area opened he had his car dyno tuned, it made 370hp at the rear wheels, he was devastated, rough calculations indicated he was making 450 fly wheel hp and he had the aftermarket mopar cam upgrade that was supposed to add 30 plus hp.
what really depressed him was he went with a friend that drove a 455 GS buick, and the Buick dyno showed 346hp...just 24 hp less


http://en.wikipedia.org/wiki/Buick_GSX#Gran_Sport_455
IF YOU CAN,T SMOKE THE TIRES AT WILL,FROM A 60 MPH ROLLING START YOUR ENGINE NEEDS MORE WORK!!"!
IF YOU CAN , YOU NEED BETTER TIRES AND YOUR SUSPENSION NEEDS MORE WORK!!
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Re: how fast were the old muscle cars?

Postby guysmontess » August 19th, 2012, 6:39 am

The Big Block LS-6 Chevy 454 rated at 450 HP was also overrated from what I've found out.Guys have had them on engine dyno's and found they made more like 375-385 HP;
Originally Posted by Dave Birdwell
And someone a long time ago ran a stock LS6 through the lights and weighed the car. Came out right at 380 horsepower. Then they did nothing but add headers, and rejet the carb, re-ran the car and came out at 451 horsepower. Don't ask what Magazine did this test, as I couldn't tell you.

Might have been an independent test,but it was Ronnie Kaplan that did the testing.
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FasglasApr 28th, 11, 2:41 PM
From what I remember reading the stock LS-6 exhaust was pretty restrictive.

One test I remember had a bone stock LS-6 making 385hp at the crank. Changing to open headers bumped the power to 451hp.

-SS454-May 1st, 11, 1:28 AM
Super Chevy did a test on a Dynojet chassis dyno. Bone stock LS6 454 Chevelle with TH400 and 4.10s. It dynoed at 285 rwhp @ 5400 and 320 rwtq @ 3900. I'd guess a manual trans car would make somewhere between 300 and 310 rwhp, on this particular chassis dyno at least.

It is a myth that stock LS6 cars made over 500 bhp off the show room floor. The exhaust manifolds and small pipes really choked these engines down.

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Re: how fast were the old muscle cars?

Postby Randy_W » August 20th, 2012, 6:40 am

Just from having dealt in the old Pontiacs for years that many of them would gain a legitimate 1/2 second or more from good headers and exhaust, not junk stuff but quality parts.
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Re: how fast were the old muscle cars?

Postby guysmontess » November 11th, 2012, 10:29 am

Got another one for you guys.One fellow I work with was telling me about the early to mid 60's Merc pickup he has.So I asked what did it have in it a 352 V 8 ?? But apparently it has a 326 Hemi in it,all factory original.I just kept a straight face,although it wasnt easy :o
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Re: how fast were the old muscle cars?

Postby grumpyvette » November 11th, 2012, 10:50 am

I remember a friend FROM, high school who purchased a really clean 1967 fair-lane with a 4 speed car with a ford 9" with 3.90:1 REAR GEARS , BACK IN ABOUT 1971, OR SO, and what he was told was a 427 high performance engine in it, (which it turned out was a 352 FE) THAT REAR GEARING AND 4 SPEED MANUAL TRANS, ALLOWED EVEN THE 352 fe TO SMOKE THE TIRES WITHOUT A GREAT DEAL OF EFFORT,
Image
he was really pissed off when he found the engine in the car had been replaced with a standard 352 FE as he had paid a good deal more thinking he was getting a 427 engine. we eventually found A WRECKED 1970 THUNDERBIRD AND BOUGHT THE ENGINE, and installed a high compression 460 ford engine, IN THAT FAIR- LANE but it was just not what he hoped for in power although it still made the car a solid 12 second car, THE SHOCK TOWERS IN THOSE CARS, TOOK UP A GREAT DEAL OF CRITICAL ENGINE SPACER, THAT MADE ENGINE SWAPS A REAL p.i.t.a.
Image


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viewtopic.php?f=55&t=1820&p=4717&hilit=fairlane#p4717

viewtopic.php?f=44&t=4211&p=11077#p11077

viewtopic.php?f=46&t=7006&p=23123#p23123
IF YOU CAN,T SMOKE THE TIRES AT WILL,FROM A 60 MPH ROLLING START YOUR ENGINE NEEDS MORE WORK!!"!
IF YOU CAN , YOU NEED BETTER TIRES AND YOUR SUSPENSION NEEDS MORE WORK!!
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Re: how fast were the old muscle cars?

Postby Indycars » November 11th, 2012, 12:19 pm

guysmontess wrote:Got another one for you guys.One fellow I work with was telling me about the early to mid 60's Merc pickup he has.So I asked what did it have in it a 352 V 8 ?? But apparently it has a 326 Hemi in it,all factory original.I just kept a straight face,although it wasnt easy :o
Guy


Must of been an experimental truck that was mistakenly sold by Mercury! :P

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Re: how fast were the old muscle cars?

Postby guysmontess » November 11th, 2012, 4:15 pm

It must have been an experimental truck with a one off secret prototype Merc engine.
Talk about rare :roll:
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Re: how fast were the old muscle cars?

Postby grumpyvette » December 3rd, 2013, 8:45 pm

BEST 7 MUSCLE CARS???
obviously theres a bunch of good potential choices

http://www.bankrate.com/finance/auto/be ... ime-1.aspx

HERES A FEW Suggestions Others POSTED

'69 Charger R/T
'67 GTO
'70 Stage 1
'70 442
'70 Torino GT
'66 Shelby Cobra
'68 Road Runner
'66 Chevelle SS

1) 65-66 AC Cobra 427
2) 69 yenko Camaro 427
3) 67-68 GT500 428
4) 69-70 Boss 429
5) 69-70 Hemi Cuda 426
6) 67 Stingray 427
7) 65-66 GT350 289

1. 1970 Plymouth Road Runner 426 Hemi
2. 1966 Chevelle SS396
3. 1966 Chevy Nova SS396
4. 1964 GTO 389
5. 1968 Olds 442
6. 1968 Shelby Cobra GT500 428
7. 1969 Dodge Charger 440 Six Pack

66 AC 427 Cobra... Rest are rear view...
69 Z28 302 or Yenko
68 Mustang Fastback
70 T/A Challenger 340
69 Charger 426
66 GTO Tripower 4 spd
68 Boss 302
70.5 Z28


70 chevlle 450 hp 454
68 GTO
66 AC 427 Cobra
70 HEMI CHARGER
70 HEMI CUDA
70 BOSS 429 MUSTANG
69 zl1 CORVETTE
IF YOU CAN,T SMOKE THE TIRES AT WILL,FROM A 60 MPH ROLLING START YOUR ENGINE NEEDS MORE WORK!!"!
IF YOU CAN , YOU NEED BETTER TIRES AND YOUR SUSPENSION NEEDS MORE WORK!!
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Re: how fast were the old muscle cars?

Postby 87vette81big » December 3rd, 2013, 9:42 pm

There are No Royal Bobcat GTO's on the List Grumpy. Nor 1967- 1969 L-88 Corvettes.
Been told a. L-88 With Headers open could beat a 1966 427 Cobra.
1969 Royal Bobcat GTO Ram Air 5 Tunnel Port 400 a screamer.
500-525 Hp.
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Re: how fast were the old muscle cars?

Postby grumpyvette » December 3rd, 2013, 10:09 pm

87vette81big wrote:There are No Royal Bobcat GTO's on the List Grumpy. Nor 1967- 1969 L-88 Corvettes.
Been told a. L-88 With Headers open could beat a 1966 427 Cobra.
1969 Royal Bobcat GTO Ram Air 5 Tunnel Port 400 a screamer.
500-525 Hp.



ITS NOT MY LIST, WHY NOT POST WHAT YOU THINK ARE THE 7 BEST?
IF YOU CAN,T SMOKE THE TIRES AT WILL,FROM A 60 MPH ROLLING START YOUR ENGINE NEEDS MORE WORK!!"!
IF YOU CAN , YOU NEED BETTER TIRES AND YOUR SUSPENSION NEEDS MORE WORK!!
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Re: how fast were the old muscle cars?

Postby 87vette81big » December 4th, 2013, 6:29 pm

Ok Grumpy.
Feeling Down about our Friend Rich.
Hope he gets Better Soon.

1) 1970-1/2 Pontiac Trans Am with Ram Air IV Round port Exhaust engine & Muncie M-20 4-Speed Transmission. 12-bolt 8-7/8" Axle with 3.73 gears. All 4- speeds equupped exact. No A/C available. Race screamer on the street & track.
Superb handling from 100-160 mph. 160mph Speedo & 8K rpm Tachometer stock. Rally gauge pack stock. Just 88 made in 1970.

2) 1967-69 Chevrolet Corvette with L-88 427 Ci BBC. Pure Rave car unleashed on the street.
Bad to the Bone Fast.
Power not for the afraid or weakling afraid.

3) 1970 Pontiac GTO in Orbit Orange Paint.
Electric bright color. 100% unique. Sets off the Hanfsome body lines of the Musclebound GTO.
Any engine from 400-455 ci Ok. All perform.

4) 1969 Pontiac Firebird Trans Am with 303ci Ram Air 5 Tunnel port intake engine. 4.5 squaure inch cross section intake ports. Designed to Rev to 8,400 RPM's.
Last edited by 87vette81big on December 4th, 2013, 7:17 pm, edited 1 time in total.
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Re: how fast were the old muscle cars?

Postby 87vette81big » December 4th, 2013, 6:37 pm

5) 1970 Oldsmobile Cutlass W30 455.
Just stellar Musclebound Styling.
Mega Torque. Ride in style & blow away that hopped up fart can myffler Civic that belongs to a Luberal Lozer....

6) 1965 Chevrolet Corvette 396 ci BBC 425HP Solid Lufter Engine. 4- speed .
4.10 Gears.
Drag Race Youv& spot 4-5 car lengths.
Run for a $100 Benji note.

7) Any 1984-96 Chevrolet Corvette.
Convertible Preferred.
Have to drive Daily.
Race others. Ypu will win.
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Re: how fast were the old muscle cars?

Postby grumpyvette » October 10th, 2014, 3:00 pm

IF YOU CAN,T SMOKE THE TIRES AT WILL,FROM A 60 MPH ROLLING START YOUR ENGINE NEEDS MORE WORK!!"!
IF YOU CAN , YOU NEED BETTER TIRES AND YOUR SUSPENSION NEEDS MORE WORK!!
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Re: how fast were the old muscle cars?

Postby philly » October 29th, 2014, 6:47 pm

i was just talking about this with my buddy the other day... his neighbor just bought a 79 trans am with a turn key ls3 crate motor and 4L65e trans, along with some other upgrades in brakes and suspension... the car with the 430hp at the flywheel ran a 12.50 at 115 and im sure it puts down more power over a more useable rpm range than the OVERWHELMING majority of the muscle cars from way back when... which led us to the same conclusion, guys have some fond memories of shit that never actually happened. in a time where practically NO ONE was making 450hp i havent met anyone who claims their old hot rod ran slower than 12.000
-phil

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Re: how fast were the old muscle cars?

Postby Strictly Attitude » October 29th, 2014, 7:02 pm

I love it when I was selling my bike I had a kid want to trade me his so called 10 second 500hp civic. After asking him some quick questions I weeded through his BS. I don't think he understood I grew up at the track and understand what a 10 second car is and what it takes to get there. lol one of first questions I asked was did it have a cage and what psi it made 500hp at with what octane gas. So the memories of made up numbers go on generation after generation muscle car or other. LOL one of the funnest cars we had was a Honda we kept trying to blow up ran a bottle NOS right in the intake tube no switch just turn the bottle open and go allot of pissed off mustangs and comaro's that was late 90's.
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