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Aftermarket mods: Where to start?

Questions and comments about various aftermarket parts and companies who sells these parts. You could also review sellers you've purchased from.

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guitarjunkie87
Posted: Fri Jul 28, 2006 10:29 am
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I'm fairly new to the world of fast cars and modding them. In fact, I don't even have my own yet, but I'm shooting for a '92 Z28 w/the 350 engine sometime in the near future. My question is where do I start when I want to replace stock car parts to boost performance? should I start w/the intake and exhaust systems or what? If someone would lay down some basics, or knows of a good site to visit to learn about this, that would be appreciated :)

Sorry if there's already an FAQ or something about this on the site that I may have missed
 

 
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roughskinjrz
Posted: Fri Jul 28, 2006 11:14 am
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Where Did You Hear Of Camarosource.ca?: Paul lodge
headers/exhaust, intake, gear ratio
'74 454 .030 Over 4.250 Stroke 489, SRP Forged 0.030 Flat Tops, Crane Z Blower .632/.632 244/256 Cam, Weiand 871 Roots Blower, 2 x 800cfm Barry Grant Speed Demon Carb, Procomp 320cc Heads Race Package, CSR Electric Water Pump, TH400 FUll Manual Reverse Valve Body Sportsman Trans Brake 3000 Stall, 9" Rearend 31 Spline 3.70 Gears.
 

 
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guitarjunkie87
Posted: Fri Jul 28, 2006 3:45 pm
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Thanks :), and if someone could explain gear ratios to me, that would be really helpful.

Any recommendations on what type of exhaust/intake stuff to go after?
 

 
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rlyfst1
Posted: Fri Jul 28, 2006 4:39 pm
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"Wax on, Wax off" ......Air/gas in, exhaust out. Rough is right the easist mods are intake manifold and carb, headers and free flowing exhaust systems. Many options are avalible, all cost $, but our opinions about them are free. There is a great dicussion on gear ratios in the "history/restoration/decoding section of the message board under "technical numbers?" (sorry I don't know how to link you directtly there)
 

 
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roughskinjrz
Posted: Fri Jul 28, 2006 4:59 pm
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the lower the gear ratio the faster your axles will rotate, you get their more quickly but you lose top speed because your running through your gears so quickly.

http://www.camarosource.ca/forums/viewtopic.php?t=11089
'74 454 .030 Over 4.250 Stroke 489, SRP Forged 0.030 Flat Tops, Crane Z Blower .632/.632 244/256 Cam, Weiand 871 Roots Blower, 2 x 800cfm Barry Grant Speed Demon Carb, Procomp 320cc Heads Race Package, CSR Electric Water Pump, TH400 FUll Manual Reverse Valve Body Sportsman Trans Brake 3000 Stall, 9" Rearend 31 Spline 3.70 Gears.
 

 
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camarobluze211
Posted: Fri Jul 28, 2006 8:12 pm
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Supercharger :twisted: :twisted:

Thats in the future if your serious but I'd start with exhaust because it gives power, good deep sound depending on what you get, and it actually helps out your gas by 7-8%. But lets face it you don't get a cat-back for that third reason :P
1986 Blue sport coupe 5.0 A4
 

 
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guitarjunkie87
Posted: Fri Jul 28, 2006 9:24 pm
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Haha, don't have the money for a supercharger at this point

And how much of a power increase could I expect from a decent exhaust system? any recommendations on particular models/brands to go after?
 

 
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roughskinjrz
Posted: Fri Jul 28, 2006 9:45 pm
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guitarjunkie87 wrote:
And how much of a power increase could I expect from a decent exhaust system?



20-40hp depending what kind of setup you have and get. personally im goin with long tube headers, s-bends, h-pipe, and couple of mufflers dumped before the axles.
'74 454 .030 Over 4.250 Stroke 489, SRP Forged 0.030 Flat Tops, Crane Z Blower .632/.632 244/256 Cam, Weiand 871 Roots Blower, 2 x 800cfm Barry Grant Speed Demon Carb, Procomp 320cc Heads Race Package, CSR Electric Water Pump, TH400 FUll Manual Reverse Valve Body Sportsman Trans Brake 3000 Stall, 9" Rearend 31 Spline 3.70 Gears.
 

 
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Bahama Camaro
Posted: Wed Aug 09, 2006 9:35 pm
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The reason Rough says intake & exhaust 1st is this. Think of your engine as a large air pump the more air you can put in the more fuel you can put in IE super charging, but thats on down the line. You need both to make good power because theres no sense in putting air in a 2 inch pipe (bear with the analogy) to have it exit through a 1/2 inch pipe. Do you get the drift?? Start in the back with a cat back exhaust then later headers then later the intake as money allows. When you do the intake try to get fresh air to it thats free power, not much but hey it's free. then heads with bigger valves then a bigger cam then...........well thats the idea anyway
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My wife says it's a "midlife" car, I say...... huh?? 1992 Camaro RS 25th Anniv. edition. Purple Haze
(Jimi would be proud) T-tops 350 700R4 308 mini spool 4 inch cowl....Hauls @@@ needs gas!
 

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Adam228
Posted: Fri Mar 02, 2007 4:07 pm
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Try to figure out exactly what you want the car to do. A 350 in those cars is pretty quick already so drive it first and try to figure out how much faster you want it to be. Then decide whats more important, top speed or acceleration. I agree that an exhaust is pretty much #1, Mostly because it is as pleasing to the ears as it is to the engine, then an intake or just a new airfilter element, they're pretty cheap and go hand in hand with the exhaust, plus add gas mileage. I'm pretty sure that car would come with 3.73 gears if its a 5spd or 3.42 gears if its an auto, which are pretty good to start out with, changing rearend gears gets expensive and i dont recommend it for a do it your selfer, they need to be put in precisely or will howl or worse, self destruct. I'd say the next step would be putting a cam in which would give some pretty good results and is pretty basic to do.
 


 

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