horsepower 73 comet gt

I have one question

If i put on Hedman Performance steel headers on my 73 comet gt what sort of horsepower gain will i get?

With a 4 barrel Holley carburetor , and the dual exhaust with Hedman headers on. What total Horsepower will i be getting?

Also, a quick question. Does anyone know of a great cold air intake that can go on a Holley 4 barrel? That fits in the engine compartment of a 73 comet.

 

you should be close to 200hp. the factory heads and cam really dont make more power than that. spector makes universal cold air kits for carbs that you can use.

 

If i put in a Spectre cold air intake on it, then what sort of horsepower do you think ill have here?

 

Could anyone answer that one?Anybody?

 

Probably not much, that's why no one has given you an answer. There are other small modifications that will get you more power, for less money.

 

I can't say I have seen much talk about cold air intakes around here. Just plain ole air filters. Chrome air cleaners make horse power too

 

it depends on what you currently have for a filter. i would expect 5hp at most.

for best seat of the pants gain, changing the rear gears to something like 3.25s-3.55s will give a good performance gain. also a looser stall converter in the transmission will help it jump off the line.

what do you use the car for?
the more info the better we can guide you.

 

You forgot the chrome valve covers and over sized wing

 

its a daily driver, but i want to go out to a strip without embaressing my self.

 

Don't bother going to the track, till you put some decent money into the car.

 

your dealing with 1970s technology. its not like a 90s honda. the motors is what is know as a smog dog.
the cylinder heads, and the cam have now significant power potential.
how much money you can spend on this dictates how you should go about building the car to be a good daily driver and not embarrass your self at the track.
a 70s style cold air kit is called a hood scoop.
a nitrous kit would be an easy way to not be to embarrassed at the track. dont forget about traction. if you cant get traction you cant go fast. get some drag radials or other drag tires and you will have more fun at the track.

 

With the mods you are contemplating, assuming your engine/trans are in good shape to start with, you would probably run low 16s-high 15s. Stab in a 3.55 gear and probably go mid, maybe low 15s. If you can't afford good tires (ie-slicks, sticky streets,etc) get a pair of slapper bars. At this power level, if you're having traction problems slappers will help you out on your radials.
If you don't have alot of money to throw at it, here's a few suggestions;
3.40-3.55 gears can be found under v6 Pintos/ Mustang toos.
Put a pertronix in your distributor, or convert to a factory Duraspark setup. Don't believe the hype as to why you need a $400 MSD setup on your stock engine. It doesn't help THAT much.
A shift kit will help, but if your trans is weak it will finish it off quicker than if you left it alone.
A 600 cfm carb is plenty. A 535 or 570 would be better if you could find one.
Dual plane intake. Stay away from single planes on your stock engine.
Autolite/Motorcraft plugs are cheap and they work. Don't blow money on those high dollar plugs, there's no noticable performance gains.
If you DO run nitrous, keep in mind you've got cast pistons. I wouldn't run over a 100 shot, and be careful with your timing/fuel. Too much timing/not enough fuel will run faster, but it will be catastrophic on pistons(even forged) and head gaskets. And you'll most definitely need some sticky tires with nitrous.
Cold air intake. Unless you can duct in fresh air from outside the engine compartment, don't bother. Just get a good 14" open element air cleaner.
Driving technique. Once you have a little power, you may have to learn how to launch your car all over again. Burning rubber for hundreds of feet may be cool on the back streets and such, but on the track it adds up to sucky ETs and lots of laughter in the stands. Learn how to leave as quickly as possible without blowing off the tires and don't be that guy.
Hope this helps a little.:Handshake

 

Yes that does help, thank you everyone/ thank you tim keck!

 

Go out to a strip

You do not need a lot of money in your pocket or your car to go have fun at the strip just be smart and safe. Download general rules and guidelines from your local track. Join IHRA best money ever spent.

 

True, but if you're worried about being embarrassed, don't take a 17 second, 39 year old car...