Does anyone know of a good supercharger kit that's suitable for my 305 TPI (LB9) 87 IROC?? All the ones I see advertised are for 88-92 models. I don't know why they wouldn't work though.

The engine is completley stock with 81000 miles on it.

Also, what sort of hp gains will I get?

Thanks for the help

Rob

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1987 IROC-Z Auto (LB9)
Black/grey with the stance of a streetfighter

Mods
Custom exhaust. 4 Inch pipe from the headders all the way back to a single muffler at the rear. No Cat.

Future mods:
K&Ns
RAM Air
New Underdrive pulleys-either March performance pulleys or Auto Specialties Performance
Air foil

Rob,

Your car has the v-belt system on it, Paxton is the only one that makes a kit for the v-belt car...but you can change your car over to serpentine belt system and intall a Vortech kit or a ATI procharger kit...

Don't waste your money on the underdrive pulleys or the K&N's if you plan on installing a SC...the pulley's will throw off the belt alignment and all the kit's come with filter's

Hope this sheds alittle light for ya...

later,

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MÅN¡ÅÇ ©
88 IROC 5.7L,edelbrock TES,random tech cat,borla exhaust,chip,sfc,accel wires,airfoil,k&n's,ETC..
and soon to be supercharged
http://maniac.megamania.com

Go to a thread on this forum called "1986 TPI Want Supercharger" for info.

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Willie

Supercharged 1987 305 IROC-Z, Daily-Driver, Emissions-Legal.
12.57 @ 111 mph.
12.04 @ 114 mph (50-hp nitrous).
http://members.optushome.com/au/downunder1/rides/willie/willie.html

1987 "20th Anniversary Commemorative Edition" Z28 Convertible -- Super Chevy Show Class Winner, 1998.

[This message has been edited by Willie (edited December 10, 2000).]

Thanks for the help. I'll check out the thread

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1987 IROC-Z Auto (LB9)
Black/grey with the stance of a streetfighter

Mods
Custom exhaust. 4 Inch pipe from the headders all the way back to a single muffler at the rear. No Cat.

Future mods:
K&Ns
RAM Air
New Underdrive pulleys-either March performance pulleys or Auto Specialties Performance
Air foil

The ones for the 88-92 are designed for speed density TPI engines. 85-87 TPI engines are mass air flow setups.

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John
'85 Z28 TPI 305

Not entirely correct. Here is the correct breakdown:

85-87: V-belt with MAF
88-89: Serpentine with MAF
90-92: Serpentine with speed density



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Willie

Supercharged 1987 305 IROC-Z, Daily-Driver, Emissions-Legal.
12.57 @ 111 mph.
12.04 @ 114 mph (50-hp nitrous).
http://members.optushome.com/au/downunder1/rides/willie/willie.html

1987 "20th Anniversary Commemorative Edition" Z28 Convertible -- Super Chevy Show Class Winner, 1998.

89 was the last year for MAF