Late model muscle....?

mr.trooper said:
Thats the price you pay for a factory engine that can make 540hp with a carb and header swap. :D

The 455 SD is the true king of muscle car engines. makes the 426 look silly.

No joke on the prices of the cars either. I just checked the value on my 77 SETA Trans Am. Cars with the 6.6L and 100K miles are going for $35,000. prety good for a car that only sold for a few K originaly.
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boy i wonder what kinda HP my old '71 Z/28 was putting out 'cuz i sure have smoked an SD or 2.

probably due to 4.11 gears i suppose, but anyway its gonna take more than headers and a carb to get 500+ HP outta any pontiac ive ever seen/heard of.

one of the faster street cars i ever raced was a '70 GTO with a ram air 400 engine with all the stuff done to it, auto tranny, 456 gears too IIRC, it was pretty darned fast but i doubt it put out much over 400 HP.

imho the fastest car pure stock from the days was a buick GS 455 with the stage 1 package, they ruled A/stock- auto for yrs, a bud had one with a offy intake, 750 holley, hooker headers, accell ignition, 411 gears and some BM tranny stuff and that car was FAST, it ate 428 mustangs for breakfast, i dont know about a hemi those were as rare then as they are now, i saw 2 of them back then, a 68 charger and a 68 belvedere, and thats it, ya would think from listening to some folks they were everywhere, not.
 
SIFU1A said:
boy i wonder what kinda HP my old '71 Z/28 was putting out 'cuz i sure have smoked an SD or 2.
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Bone stone stock LT-1/350's were 360 hp right off the showroom floor.
THE strongest small blocks Detroit EVER rolled out.The high nickel,4-bolt main block were even used in an Indy race car and I ain't talkin' about NASCAR Indy. :p
Came stock with 780 cfm vacuum secondary Holley,I swapped a 750 double pumper on,lost 3 mph top end but it snapped off the line and mid-range better.
Rock On Gearheads. :)

Doug
 
SIFU1A's got it right..except the pontiac part... the pontiac lemans ram air IV? i think that was the version..well anyways, a carb change and headers would make that car just CRAZY fast. im talkin high 12's if you pushed it... (on slicks of course) They were a low 13 second car already. on stock tires too.

as far as the buick.. it was indeed the hemi killer. their '70 stage one's were just incredible. 510lb/ft of torque at around 2800 rpm is axle snapping power... the only cars that had more torque, were cadillacs, and they only had a few more pounds.. but for a 600 or so pound heavier car. you do tires, filter, headers, confirm the stall, and match it to your preferred range, and you would light up many porsches and ferarris with that thing..
 
its easier to claim a car runs 12's than to get out on that track and do it lol.

the ram air 4 stuff was quick though, i just dont know about 500 HP with a different carb and headers.
 
oh im not sayin I could do it, im just sayin its possible. I seen a street tire ram air 4 pull a low 13 bone stock. so i know its possible.
 
If your clutch is that hard to push, you most likely have A) the wrong pressure plate in, or B) some serious binding/deflection going on under the car.

My last ElCamino had a 427 in it with a muncie rock crusher. The precious owner had put a killer clutch in it because it ate discs and he wanted something that would last longer. It had a B&B pressure plate, with 3.23 gears and a 2.20 first gear in the Muncie. Swapping out the four speed for a 6 speed out of a gen 3 or 4 camaro with a 3.27 or higher first gear wide ratio and a hydraulic clutch with a diaphram reduced the clutch pedal pressure from like 200 pounds, down to under 40, easy enough to push the clutch pedal in by hand when the car was parked.

The 3.27 x3.23 first gear ends up acting like 4.88's in a 2.20 first gear car and lets you run the engine down at 1600 rpms on the highway at 70 mph with the .7 or so OD sixth.

The conversion cost me net about 300 dollars as the race car Muncie and the heavy pressure Borg and Beck clutch were worth about 800 at the swap meet where i got the new tranny and factory diaphram pressure plate.

big inch motors do not need close ratio trannys when they have torque and HP curves that look like flattened rainbows.

The other cause of heavy clutch pedal pressure is deflection, many of the unibody cars do not have solidly mounted clutch linkages as there is nothing to tie the linkage too, add a 200 or so clutch pedal pressure and look up a the flex involved in the linkage and you can see how much binding and deflection takes place. I have seen small block bellhousings and tranny mounts move up to an inch and a half when the clutch pedal was pushed down, changing the angle, the throw lenth and the action of the pedal incredibly fast.
 
Guntotin_fool said:
V
PC, racing on the streets every night i go out. live with it.
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Unfortunately someone else will have to live with it when you cream them. Hopefully it will just be you, but the streets aren't always empty.

Racing belongs on the track. Driving on the street.




Paul
 
i agree with guntotin no reason for your clutch to have that heavy a pedal with the clutch technology of today.
 
Been racing for 32 years on the street. I don;t know where you think street racers race, but 99% of the time, it is in empty industrial parks, unused state roads or huge parking lots at like 2 am. Yeah they are empty, usually it is meet, do a quick burn out, race, leave and meet somewhere else for settling up.

When 800 to 1000 hp street rods, street machines or pro streets meet up for a race, it is LOUD< fast< and quick. We attract unwanted attention so we usually have presets. Who, what, when, and how much are predetermined and once in a blue moon I will do a punch and run with some street tuner car, but that usually is over in under 5 seconds.

In 38 years I have seen one racing accident on the street, that was a one car roll over in a prostreet Maverick with a 500 CI race motor who blew a tire. Everybody walked away.

We don't race on crowded freeways. We dont race on busy streets, Most races are 1/4 mile strips with no entrances. Our current favorite spot is a vacant 2 million square foot distribution center that has nearly a mile long parking lot, easy to mark start and finish, and lots of ways out with minimal police patrols.

I am currently without a racer as i sold my last car to a kid with more money than brains. That was a 671 blower on a 454 in a 67 chevelle. The project now is a gen 4 firebird that is getting prostreeted now. I am thinking about a big inch small block, but the lure of Giganto 572 inch big block or one of the new rumored tall block 600 inch machines has my mouth frothing. The lower weight and frontal area of the Gen 4 camaro firebird along with cheaper NOS from dealers has me leaning this way. My son wants a factory five Cobra kit car, so that may be the next project. The sound of big block getting it on is just too sweet. When two built big blocks let it go, everyone with in a mile knows what is going on.

Street racing will be around as long as guys have balls. It is just a part of life to pull up and want to know who is faster.
 
whaddya think about the all aluminum 427 crate in the current summit catalog. I think that engine has a ton of potential. its always been my favorite engine outside of my turbo 3.8.
 
487 hp (all motor) 347 stroker built on a mexican 68 gt350 block, its backed by a 150 shot of juice
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580 hp 87 grand national, TSM preped. i built this car in my high schools mechanics class.
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Nice ,those mexican blocks had a higher nickel content or at least that was the rumor. I like that your stang can stop and handle as well as go fast in a straight
line.
 
nice cars. which ones faster?
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stang is at top speed but the gns the fastest off the line. right after i baught the car we clocked it with the help of a friend whos a cop at 197 on a open streatch of interstate. when i hit the brakes the pads desentegrated. i replaced them with oem pads and rotors. just the other week i was clocked at 184 mph (long story on how i found that out) when i touched the brakes the rear pads cracked in several places and i let the smoke out of the fronts once again. the brembos thats on there right now will have to last me for a month or so until i can do a larger rotor swap. after about 130 the gn gets scary, at the 150 range you think your going to take off.

the stang really handles good, its a verry controlable car at speed and in the corners. this summer im going to enter in to a few local drift meets and see what hell i can put it through.

these were 6 months ago.


this was a few weeks back.





Nice ,those mexican blocks had a higher nickel content or at least that was the rumor. I like that your stang can stop and handle as well as go fast in a straight
line.
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there higher nickle content and have the thicker 289 HP main caps. the lure around them is that they are thicker but a mexican weighs only a half pound more than a regular 302. the main caps is where the strength comes in, there nearly as big as a 351w's
 
I always thought those two bolt mains looked small. One of the mods I can't afford but intend to do when I finally rebuild my 5.0 is to stick some good ARP bolts in there. I am rebuilding my 302 and car with newwer stock parts like switching the points distributor for a later electronic one and accel coil.
The 82,5.0 I got has a cool 351 marine cam and a high rise aluminium(2 barrel?)
intake but I am using the higher compression 69 heads with studs.
This is the money pit ,I mean project car.
 
Unsub said:
I always thought those two bolt mains looked small. One of the mods I can't afford but intend to do when I finally rebuild my 5.0 is to stick some good ARP bolts in there. I am rebuilding my 302 and car with newwer stock parts like switching the points distributor for a later electronic one and accel coil.
The 82,5.0 I got has a cool 351 marine cam and a high rise aluminium(2 barrel?)
intake but I am using the higher compression 69 heads with studs.
This is the money pit ,I mean project car.
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That'll be a sweet ride when it's done!
 
Buddiiee said:
wow.. thats fast lol. if your brake pads are disintegrating, you know youre goin fast.
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if you notice all the black spots on that one rotor i believe thats where spots begain to temper, those rotors were RED hot. i wonder how hot they got to cause that lol.
 
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