I ran an Impala with a "crate 350 turbo jet" when I had the Holley 2 kit and walked him bad both off the line and a 40 drop.

Hey Red,

Are you talking about the Fort Street Cruise? I took care of a few local big blocks my self..lol

I don't mean to flame or anything, so don't get me wrong, but running low 12's on stock tires probably isn't going to happen. If you have the power to run low12's then you will be spinning everytime you put your foot into it, even 1/3 of the way down the track if your running anything but drag radials, cheater slicks (like ET streets), slicks, or some gawdafully wide tire. As far as just adding a blower etc... there is a guy up here with a Hemi 'Cuda, that is far from stock (dyno'd at well over 800 hp) that runs mid - low 10's on slicks. Running nines isn't as easy as bolting on a part.

Helmet
 

Before I had my TFTW heads, my car ran 13.98-14.1. I didn't have to wear a helmet. Whenever I lined up against someone with a helmet on, I knew my ass was about to be handed to me, LOL.

Rev

You guys are right about that the name of the game is now applied horsepower, my 67 GTA has the 390 rated at 320HP, and i have only been able to run a 15.4 @90 with it, granted thats not really launching on street tires, but when a Notchback fox can run mid 13's with just an exhaust system and maybe 240HP at the Crank, it still amazes me, and on my first time at the track with my truck i only ran 14.5 with a motor rated at 435-475(Comp Cams Guy) so you fox guys keep hauling ass, and hopfully soon ill be joining you with a 5.0 of my own


Steven

One must remember that the 1967 rated HP figures are gross horsepower. Manufacturers now use net horsepower when rating engines. There's a fair amount of difference in gross and net.

Rev

either way i think 15.4 is kinda unimpressive for a Big Block Mustang, what the HP calculator is saying is that i put out about 200 at the wheels



Steven

200 about right
 

Net hp is usually somewhere around 85% of gross hp. So .85 X 320 = 272 net. If it's automatic, then the rwhp is only about 75% of the net flywheel hp. So .75 X 272 = 204 rwhp.

Rev

If I run into someone with a big block applying some of today's advancements......gonna get my @#* handed to me. things can always be deceiving.

I also raced a cutlass back in high school when my car ran a solid 16.0 quarter....yes I said 16...and I thought it was quick...so I had this coming. the cutalss had half an inch of dust/dirt all over the top with cat crap and cat prints to boot. the interior was trashed with a walmart guage pod. The car had home made traction bars, but the car sat slightly to one side instead of level.

When we raced, it was so loud....scared me bad enough I killed my engine...and it was an auto. The thing was instantly revved out.....like my cr-250 2 stroke. Never had seen anything like it.
should have noticed the Nitrous plate under the carb...or understood that when they said it was a 383 race engine out of their stock car...they might not be bluffing. U could hear the crowd laughing for miles.

The point...anything can be fast...talking to the owner is what I look at...and not so much the cubic inches of the car.

Ryan

Let me start by saying I don't race anyone as my car is too slow. I love the big block muscle cars. They are what got me hooked on cars in the first place. I ran a big block corvette at national trails once in a monte carlo. This was the fastest car I had ever owned. I was so impressed with the sound reving up next to me I almost didn't want to race but thank goodness I actually won that one. I do wonder if there is a certain break in time before you can put on a keene bell twin screw. My car has 1200 miles and don't want to put on on before it is broke in if it will hurt it.

come on give me a break. Not everyone in a big block old car is "some old dude." I have had mine since I was 22 years old and now i am 27. I do also own a 91 GT so i know what they are both like. The 5.0 will never ever pull the way my 428 does. It is just a totally different feeling. I have never lost to a 5.0 with my 428 I did lose to a 95 vortech supercharged lighting though. Most of you guys with your lightly moded 5.0 beat old big block cars because most of the are not modified. They are stock because they are worth more money stock moded old cars aren't worth a sit. I would hope that with 20 years of technology on the old cars that stock for stock a newer mustang would win. What the hell would Ford be doing if they couldn't improve on a product 20 years later. You want to compare cars look at NHRA stock eleminator the mods for each class are the same and there sure as hell aren't any 5.0s running in the same class as the big blocks since a stock eleminator 428cj runs deep into the 10s and 5.0 run 11s.

what ever happened to the faithful and for the most part true quote of "there is no replacement for displacement" big block = kill you, hands down

I dont think anyone here is bashing the big blocks, Anything can make power, its just how much you want to spend.
As for the replacement for displacement - I think turbos, superchargers and nos are exceptions to that rule.

I also agree that I personally do not feel anyone is bashing the big blocks. I just think some people (including myself) are trying to make the point that just because a car is equiped with a big block, does not necessarily mean it will beat a car with a smaller engine. Especially one that has been put together with choice parts.
Ryan

HP/CID
 

I still think we have to look at horsepower per cubic inch displacement when judging the value of various engines. To me, that's really the nuts of the matter.

Rev

whats the numbers on the 428 cj? anybody know?

Factory
 

http://forums.mustangworks.com/images/icons/icon4.gif
http://forums.mustangworks.com/images/icons/icon4.gif

The 428 CJ was factory rated at 335 HP. Many folks feel like it was intentionally rated low because of pressure in those days from the Feds and the insurance industry. A lot of people believe the power was near 500 HP. One must remember that we're talking gross HP as apposed to the net HP we use now.

Rev

well lets judge the value on your terms of hp/cube

we'll say that the 428 made around 325 net
take the 5.0L at 225

the cj adds up to .76 hp/cube while the 5.0L is .75 hp/cube ..thats not a whole lot of difference ..what really surprises me now that i think of it - take a B16 which is what ..97 cubes and 160 hp ..thats 1.65hp/cube :-O

i wish my motor made 1.65hp/cube ..id be a beast - so what im trying to say is if you want the best bang for your buck you go with a civic? haha im j/k really i dont know what im talkin about and im just REALLY bored

WTF?
 

335 for the CJ is not really correct, but 335./428=.78 hp/cid. That's nowhere near correct. 500/428=1.17 which is more correct for a factory hopped up engine. 500/428 is not hard for me to believe f0or a factory hotrod for that era.

Rev

I love the 5.0 and the look in Corvette drivers eyes when they see one stop beside them at a light. I was once one of those fuel injected engine haters. It was because I just didn't understand how it worked. It was easier to work on the old Carbs. I learned how they work and now I am a fan.

Don't forget the old school guys and gals got us to where we are now!!!!