I have a 1989 IROC-Z Camaro, 5.7ltr, which stock is 230hp, and 330 lbs of torque, stock. But the car is equipped with K&N Filters, Cat-Back Flowmasters, Custom Ram Air (that breathes from behind the fog lights). So how many horses you think I gained?

Thanks, Tom.

 

Maybe 10

 

Just a question: When you installed the custom ram air, did it make your car run any hotter? I installed a custom ram air behind the fog lights and my car ran about 15 degrees hotter than without.

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86 Iroc, 355 ci, Dart II heads, holley 750, Victor Jr., Hooker super comp headers, 4.10 rearend, MSD 6A, roller valve train, high stall converter, true dual flowmaster exhaust, NOS- 150 shot.

 

Thats what I thought would happen, but it didn't on my car. I have aluminum heads and coated headers, 3 core radiator and stock water pump. Running 65/35 water/coolant and Im running too cold, need to add more coolant next time. I didn't notice any heat increase at all when I did it.

As far as your power, those filters are about nothing, the ram air is probably very small, and the flowmasters may be 10-15. I would say 15-20 all together. Depending on how many miles are on the engine, you may break even at the stock specs.

 

I dunno if it got hotter, I bought it with the mods. A mechanic owned it before me, he put the mods on it, it has 107k miles. So how bout da power increase?

 

Not enough for you to feel it.

 

Get yourself some headers and those mods will drastically improve, the lack of headers is holding those back.

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"Putting any amount of money into a RICE BURNER is like wiping your a$$ with a turd. "
'86 IROC
T-TOPS, TINTED WINDOWS, BRAKE LIGHT BLACKOUTS
GM GOODWRENCH 350
EDELBROCK TES HEADERS
3" Hooker CatBack w/Aero Chamber muffler
EDELBROCK 600CFM CARB.
KN AIRFILTER
ACCEL HEI DISTRIBUTOR
160* Stat, just switched to 180* b/c of winter coming and going to college in the mts.
3:73 Posi
Rebuilt 700R4
B&M Megashifter, 5" Autometer Tach w/shift lite

 

You have to keep in mind that hp gains from those types of mods aren't always cumulative. What I mean is this: you may have added 20 hp but it isn't at the same point that GM measured the highest hp for the engine. If GM says it makes 230 hp at 5000 rpm, you mods may have added the hp at 3500 rpm. Thus you will pull harder through the mid-rpms and gain a few tenths in your ET but not actually have an engine with a higher gross hp.