How to make my Cutlass more powerful, inexpensively!
#1
How to make my Cutlass more powerful, inexpensively!
I am looking at making my car faster without having to spend too much. I was thinking of a turbo but I am unsure what type I should get. I have the 455 engine. The previous owner installed an Edelbrock carburetor. What else can I do?
Newkid8
Newkid8
#4
Very inexpensive thing to do, is make sure both the centrifugal and vacuum advance mechanisms in the distributor are functioning correctly and that the initial timing is set right for your engine.
#5
#6
And just to expand on that, consider that at wide open throttle, the vacuum is ZERO, which is why vac advance has nothing to do with power output (but everything to do with fuel economy). Consider that in the old days (defined as before I had any gray hair), the hottest engines used only mechanical advance.
#7
$25,000.
Used nitrous kits can be had for $300 on craigslist.
#10
There is a longtime running debate over vacuum advances and what they do. I agree that on race engines it is seldom used. Not to step on anyone's toes, but I respectfully disagree with broad statements like vacuum advance has nothing to do with power output. Rather I would say that it depends on what type of power you are talking about. Vacuum advance has a lot do do with part throttle power, good driveability, throttle response, and fuel economy on a street driven vehicle. If you are running near redline most of the time, then it is not necessary, centrifugal only is sufficient. Also, if the source to the advance is ported vacuum and not manifold vacuum, then the supply to the advance will not be zero under a load. This article may be of interest:
http://65corvette.nonethewiser.net/t...um_advance.pdf
It is mainly aimed at corvette owners, but good reading.
This is aimed at Pontiac owners, but also good info:
http://www.highperformancepontiac.co...uum_curve.html
I brought this topic up because the last word of the thread opener was inexpensively, and these 2 important distributor components are often overlooked. Centrifugal advances get stuck, lose weights and are easily repaired, or modified for more or quicker advance curves. Vacuum pots blow diaphrams and stop functioning entirely. Many late 60's and early 70's Olds engines had devices to limit the vacuum advance for reduced NOX emissions, ie transmission controlled spark advance and if they are malfunctioning, power output will be down and fuel economy will suffer. If you are driving a hot rod, chances are you have already bypassed these devices, but if you are driving a stocker you may want to investigate whether they are working correctly given that gas is hovering at 4.00/gallon.
http://65corvette.nonethewiser.net/t...um_advance.pdf
It is mainly aimed at corvette owners, but good reading.
This is aimed at Pontiac owners, but also good info:
http://www.highperformancepontiac.co...uum_curve.html
I brought this topic up because the last word of the thread opener was inexpensively, and these 2 important distributor components are often overlooked. Centrifugal advances get stuck, lose weights and are easily repaired, or modified for more or quicker advance curves. Vacuum pots blow diaphrams and stop functioning entirely. Many late 60's and early 70's Olds engines had devices to limit the vacuum advance for reduced NOX emissions, ie transmission controlled spark advance and if they are malfunctioning, power output will be down and fuel economy will suffer. If you are driving a hot rod, chances are you have already bypassed these devices, but if you are driving a stocker you may want to investigate whether they are working correctly given that gas is hovering at 4.00/gallon.
Last edited by goodkarmech; March 13th, 2008 at 08:10 AM.
#13
Yes, this is the final iteration of the CroSal McKee car, using the all-aluminum 455 Olds with twin turbos and British-made injectors that look like Webers. I especially like the air box that's made into a small wing. I actually own one of the factory experimental intake manifold castings made for this engine.
#14
WOW! That is an awsome engine. Don't see something like that every day.
Actually, if I wanted to get alot of horsepower for a small investment I would purchase a K&N air filter and a chrome exhaust tip.
Actually, if I wanted to get alot of horsepower for a small investment I would purchase a K&N air filter and a chrome exhaust tip.
#18
#19
Good eyes!
Yes, this is the final iteration of the CroSal McKee car, using the all-aluminum 455 Olds with twin turbos and British-made injectors that look like Webers. I especially like the air box that's made into a small wing. I actually own one of the factory experimental intake manifold castings made for this engine.
Yes, this is the final iteration of the CroSal McKee car, using the all-aluminum 455 Olds with twin turbos and British-made injectors that look like Webers. I especially like the air box that's made into a small wing. I actually own one of the factory experimental intake manifold castings made for this engine.
Allan
#20
Why would an air filter cause for an increase of hp? Or even chrome tips? I think you are kidding by I am still pretty new to engines.
#21
Both the cross ram and the Weber intake are Olds factory experimental pieces. I stumbled across them at swap meets in SoCal in the 1980s when I lived there. Norm will likely remember the OCIR swap meet that became the Long Beach swap meet when OCIR closed. Both manifolds (along with other factory experimental pieces) are shown in an article in the July 1969 issue of Hot Rod Magazine about experimental Olds motors. The McKee CanAm motor is on the cover of that issue.
#22
That manifold is SO cool...
I'd love to show up at the track with that.
I get enough crazy looks now. I can only imagine how
they'd scratch their heads when they saw that!
-Pete
Really great stuff.
Is it an Olds part with an 'X' number?
Or an aftermarket experimental piece?
I'd love to show up at the track with that.
I get enough crazy looks now. I can only imagine how
they'd scratch their heads when they saw that!
-Pete
Really great stuff.
Is it an Olds part with an 'X' number?
Or an aftermarket experimental piece?
#23
That manifold is SO cool...
I'd love to show up at the track with that.
I get enough crazy looks now. I can only imagine how
they'd scratch their heads when they saw that!
-Pete
Really great stuff.
Is it an Olds part with an 'X' number?
Or an aftermarket experimental piece?
I'd love to show up at the track with that.
I get enough crazy looks now. I can only imagine how
they'd scratch their heads when they saw that!
-Pete
Really great stuff.
Is it an Olds part with an 'X' number?
Or an aftermarket experimental piece?
#24
Is either one any good? I would think two quads would be too much carburetor for most engines. A guy on ROP has a username quadquad and was working on a four quadrajet set up, don't know if it ever came to fruition though.
Apparently it did, here is a thumbnail picture of it in a car
Apparently it did, here is a thumbnail picture of it in a car
#25
username quadquad and was working on a four quadrajet set up
CarDomain, Racingjunk...somewhere.
I imagine the cross-ram would require serious, sustained RPM to
be efficient. Looks like you'd need to achieve intake velocity to
get the mixture out to the corners.
Still looks fun though!
That would look so cool in a stripped '65 F-85.
It would look like the Olds version a Mopar A990!
(hint, hint)
Like, say......I don't know.....HERE!
#27
Newkid, sorry. I didn't intend to make fun. You won't get HP from an air filter or exhaust tips. K&N makes a good filter but buy it because of its filtration properties, not to get HP.
If you really want HP I suggest you start with a tune up and go from there. Alot of street machines have untapped potential because the timing is off, or because the carburetor isn't set right. Ask questions and we will help.
If you really want HP I suggest you start with a tune up and go from there. Alot of street machines have untapped potential because the timing is off, or because the carburetor isn't set right. Ask questions and we will help.
#28
I imagine the cross-ram would require serious, sustained RPM to be efficient. Looks like you'd need to achieve intake velocity to get the mixture out to the corners.
Still looks fun though!
That would look so cool in a stripped '65 F-85.
It would look like the Olds version a Mopar A990!
(hint, hint)
Still looks fun though!
That would look so cool in a stripped '65 F-85.
It would look like the Olds version a Mopar A990!
(hint, hint)
The whole point of the cross ram is that it's tuned for a specific RPM. You may remember the Chrysler 413s with the long ram intakes and the carbs outboard of the valve covers. The later Chrysler short runner intakes (as well as this Olds intake) are designed more for operation in the 5000-6000 RPM range. As for an intake for the 65, the Algon calliope stack intake shown below is the one I plan to put on a 65 (yet another of the cars I must build before I die...). I have the long tubes for this one stored elsewhere.
#30
Newkid, sorry. I didn't intend to make fun. You won't get HP from an air filter or exhaust tips. K&N makes a good filter but buy it because of its filtration properties, not to get HP.
If you really want HP I suggest you start with a tune up and go from there. Alot of street machines have untapped potential because the timing is off, or because the carburetor isn't set right. Ask questions and we will help.
If you really want HP I suggest you start with a tune up and go from there. Alot of street machines have untapped potential because the timing is off, or because the carburetor isn't set right. Ask questions and we will help.
#31
And, yes, now I'm just showing off...
I AM still kicking myself about the intake that got away. It was a Sharp (Sharpe?) blower manifold for a BBO, like the ones used on the Hurst Hairy Olds. This one was at Pomona also, but I just didn't have the cash then. That was also about 20 years ago.
#32
#33
I love that "one of a kind" stuff. It may or may not run as well or be as streetable but it sure is cool looking. I read about a fuel injection conversion for the 455 over at ROP about a year ago. Pretty neat stuff.
#34
I love that "one of a kind" stuff.
Was the FI conversion on a new manifold?
I know there's a new one out that has injector bosses
molded in, could be an easy swap if you've got the cash
for a DFI or the like...
#35
Yes, I think actually it is a new "retrofit" for the Torker. I am depending on my memory here which is notorious for being in-accurate. Go on over there and search it, I am sure that is where I saw it. Probably the same setup you are aware of, I think I recall them describing which computer form which GM car had to be used to make it work. I am not to up to date on the new stuff.
#36
Yes, I think actually it is a new "retrofit" for the Torker. I am depending on my memory here which is notorious for being in-accurate. Go on over there and search it, I am sure that is where I saw it. Probably the same setup you are aware of, I think I recall them describing which computer form which GM car had to be used to make it work. I am not to up to date on the new stuff.
#38
#39
I think Edelbrock makes throttle body and multi point injection systems for older cars. Of course, with a TBI system all you would have to do is bolt it directly to the intake manifold and install a couple of sensors on the car. It looks like the intake manifold pictured above would be perfect for the Edelbrock multi point injection system.
#40
I think Edelbrock makes throttle body and multi point injection systems for older cars. Of course, with a TBI system all you would have to do is bolt it directly to the intake manifold and install a couple of sensors on the car. It looks like the intake manifold pictured above would be perfect for the Edelbrock multi point injection system.
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