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Old 02-01-2004, 07:18 PM   #1
mrfreshnklean
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Increasing my 455's horsepower

I have a 74 cutty with an olds 455..

I don't know that much about cars I must admit, but I was wondering what would be the best engine mods that could boost my horsepower a bit?

Also where can I find information on this motor at? Like stock horsepower etc.

thanks alot
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Old 02-01-2004, 07:21 PM   #2
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uhm, 4-barrel carb, low-restriction exhaust. that's actually all I can think of besides blower. but that's a real problem with fuel economy.
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Old 02-02-2004, 01:13 AM   #3
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Quote:
Originally Posted by mrfreshnklean
I have a 74 cutty with an olds 455..

I don't know that much about cars I must admit, but I was wondering what would be the best engine mods that could boost my horsepower a bit?

Also where can I find information on this motor at? Like stock horsepower etc.

thanks alot
First I'll assume you mean a Cutlass, a "Cutty" is a sailing ship, a spoon, a pipe or an Irish whore.

You'll have to be just a little bit more specific than that. What kind of condition is it currently in? Is it the original engine or is it something that's been dropped in? Define "a bit". Why do you think you need to boost your horsepower, are you sure it's not torque you're after? How capable are you of doing the work yourself? What is your budget? Define "best".
Quote:
Originally Posted by Satty101
uhm, 4-barrel carb, low-restriction exhaust. that's actually all I can think of besides blower. but that's a real problem with fuel economy.
Only three ways to increase power? Why don't we get some facts before jumping to conclusions?
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Old 02-02-2004, 03:56 AM   #4
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Quote:
Originally Posted by vwhobo
a "Cutty" is a sailing ship, a spoon, a pipe or an Irish whore.


an irish whore....interesting....
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Old 02-02-2004, 04:45 AM   #5
Satty101
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Quote:
Originally Posted by vwhobo
Only three ways to increase power? Why don't we get some facts before jumping to conclusions?

those where just the ways I could think of off the top of my head (which is amazing there's anything there in the first place) And I have done some research in the past because one of my friends has a 72 Olds Cutlass and I wanted to see some of the horse power upgrades as well as torque. those 3 were the only I could think of at the time and wasn't about to go look them up at 11:30PM. Too tired for that. I'm not trying to argue with you, I just wish you would take into consideration some of the other possible reasons I would give that answer.

Ohh yeah, btw, my friends Cutlass has a 350 Rocket so are there more modifications for it than the 455? Or are they really around the same? (I know, really general question but got curious)
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1994 Chevrolet Beretta Z26 Q4 (W41 M90'd)
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2004 Subaru Impreza WRX (kid-hauler)

Last edited by Satty101 : 02-02-2004 at 04:48 AM.
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Old 02-02-2004, 06:15 AM   #6
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Quote:
Originally Posted by Satty101
Ohh yeah, btw, my friends Cutlass has a 350 Rocket so are there more modifications for it than the 455? Or are they really around the same? (I know, really general question but got curious)
Unlike Chevy, Ford, and Mopar, an Olds V8 is an Olds V8, there is no small-block or big-block. Being as the architecture is the same they will both respond to the same modifications. Keep in mind the 350, having smaller and lighter rotating and reciprocating components will accept more rpm than the 455. The other side of that is the 455 has larger crank journals making it stronger and has space for larger valves allowing more airflow.

So to answer your question, yes they are very close to being the same. That being said you can get more power for the same price with the 455 AND it'll bolt right in place of the 350. Is that enough info?
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Old 02-02-2004, 06:18 AM   #7
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Quote:
Originally Posted by vwhobo
Unlike Chevy, Ford, and Mopar, an Olds V8 is an Olds V8, there is no small-block or big-block. Being as the architecture is the same they will both respond to the same modifications. Keep in mind the 350, having smaller and lighter rotating and reciprocating components will accept more rpm than the 455. The other side of that is the 455 has larger crank journals making it stronger and has space for larger valves allowing more airflow.

So to answer your question, yes they are very close to being the same. That being said you can get more power for the same price with the 455 AND it'll bolt right in place of the 350. Is that enough info?


plenty. thank you.
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1994 Chevrolet Beretta Z26 Q4 (W41 M90'd)
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2004 Subaru Impreza WRX (kid-hauler)
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Old 02-02-2004, 08:28 AM   #8
mrfreshnklean
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ITs the stock olds 455 in there... runs great.. Previous owner put a high flow K&N and thats it . I dont think I need torque, the tires smoke for about 75 feet as it is.

The real problem is the wheels I have on there... 285/30/20's.. (Sorry) I basicaly want it to be as fast as it was when I had the cragers on it.
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Old 02-02-2004, 08:34 AM   #9
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Quote:
Originally Posted by mrfreshnklean
ITs the stock olds 455 in there... runs great.. Previous owner put a high flow K&N and thats it . I dont think I need torque, the tires smoke for about 75 feet as it is.

The real problem is the wheels I have on there... 285/30/20's.. (Sorry) I basicaly want it to be as fast as it was when I had the cragers on it.
Well gee whiz, I think you may have just answered your own question. And just think, with some old Cragers on it the car will look better to boot.
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Old 02-02-2004, 08:37 AM   #10
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Would changing the rear end gears improve this any?
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Old 02-02-2004, 08:43 AM   #11
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Quote:
Originally Posted by mrfreshnklean
Would changing the rear end gears improve this any?
Changing your "rear gears" will in no way effect your horsepower production. First you need to determine what your question actually is, then you need to answer the questions I posed to you earlier in this thread.
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Old 02-02-2004, 12:36 PM   #12
mrfreshnklean
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Quote:
Originally Posted by vwhobo
First I'll assume you mean a Cutlass, a "Cutty" is a sailing ship, a spoon, a pipe or an Irish whore.

You'll have to be just a little bit more specific than that. What kind of condition is it currently in? Is it the original engine or is it something that's been dropped in? Define "a bit". Why do you think you need to boost your horsepower, are you sure it's not torque you're after? How capable are you of doing the work yourself? What is your budget? Define "best".

Only three ways to increase power? Why don't we get some facts before jumping to conclusions?

when i refered to rear gears i meant is there a better gear ratio to use when you have bigger rims.

1) condition is great.. functions perfectly. Motor is bare, just the fan and the alternator (Should I bother with an electric fan?)

2) stock olds 455 w/ TH400 automatic

3) I just want it to be a little faster. Comparable to when it was on the cragers. Its not going to be a drag race car, its a show car... Just wondering what little mods are to boost my HP by 50 or so.

4) I've got connections.. Would rather not replace the cam though.. Something I can do at home with a tool box.

5) budget is $500-1000

Last edited by mrfreshnklean : 02-02-2004 at 12:42 PM.
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Old 02-02-2004, 12:55 PM   #13
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Quote:
Originally Posted by mrfreshnklean
when i refered to rear gears i meant is there a better gear ratio to use when you have bigger rims.

1) condition is great.. functions perfectly. Motor is bare, just the fan and the alternator (Should I bother with an electric fan?)

2) stock olds 455

3) I just want it to be a little faster. Comparable to when it was on the cragers. Its not going to be a drag race car, its a show car... Just wondering what little mods are to boost my HP by 50 or so.

4) I've got connections.. Would rather not replace the cam though.. Something I can do at home with a tool box.

5) budget is $500-1000
This would be the perfect time for you to go to the Gearhead Garage and read the latest article (also an excellent time for me to plug it).

Fifty horsepower is going to be a tough job with bolt-ons on that engine, because of the low compression and the smog heads. Without replacing the cam you're seriously limiting yourself, and even with a cam swap it'll be tough. About all you have left is the intake, carb, headers and exhaust. That right there will use a good portion of your $1k and get you maybe 30 or so hp.

If it's only for occasional use you might be money and labor ahead to go with a low budget, low hp, plate nitrous system. As long as you run small pills you won't do any damage to the engine or drivetrain. In my opinion the best and most cost effective way is to get rid of the dubs. The car will go, stop and turn better plus think of all the money you'll have to put into performance upgrades.

For those of you who have no idea what kind of car we're talking about;
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Old 02-02-2004, 02:12 PM   #14
mrfreshnklean
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Is there a specific nitrous system / HP you would recommend?

It just killed me when my friend passed me in his stock crx

Last edited by mrfreshnklean : 02-02-2004 at 02:21 PM.
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Old 02-02-2004, 02:22 PM   #15
Satty101
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Quote:
Originally Posted by mrfreshnklean
Is there a specific nitrous system you would recommend?

It just killed me when my friend passed me in his stock crx


personaly, I think NOS is over-rated thanks to The Slow and The Curious. The way I see it, either ZEX or Nitrous Express are the 2 to consider. But this is all my opinion. VWhobo may see hings differently and I impatiantly await his response.
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1999 Chevrolet Camaro SS (PC'd)
1994 Chevrolet Beretta Z26 Q4 (W41 M90'd)
2004 Chevrolet Silverado 2500 (4WD)

My wife's cars:

1971 Dodge Charger SE (stock and original 383 auto)
2004 Subaru Impreza WRX (kid-hauler)
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