How much HP do you think I have?
Thread Starter
Junior Member
Joined: Nov 2015
Posts: 76
Likes: 0
From: Kentucky
Car: 1986 IROC-Z
Engine: 305
Transmission: Auto
How much HP do you think I have?
I know it's hard to guess, but surely someone has a similar setup to give me an approximate number?
I'm looking at trading for a 92 RS next week. Here's the specs, I was wondering if you guys had a guess on the HP it might have...
305 block
IROC 350 heads/intake
Edelbrock open element a/c
Holley carb
new valves/roller rockers
aftermarket headers
aftermarket dual exhaust
PS>where and how much does it cost to get your car on a dyno? Never tried that before
I'm looking at trading for a 92 RS next week. Here's the specs, I was wondering if you guys had a guess on the HP it might have...
305 block
IROC 350 heads/intake
Edelbrock open element a/c
Holley carb
new valves/roller rockers
aftermarket headers
aftermarket dual exhaust
PS>where and how much does it cost to get your car on a dyno? Never tried that before
Senior Member
Joined: May 2006
Posts: 581
Likes: 0
From: NY
Car: 00 SSEi / 94 C4
Engine: 231 / 383
Transmission: 4T65E / ZF 6sp
Axle/Gears: 2.93 / Dana 44 3:45
Re: How much HP do you think I have?
it's a open question. Mileage?? You need the Intake & carb "swap" Part numbers. Possibly other Parts. you are not aware of. Unknown tune..
Stock was about 170HP you now have slightly bigger valves. Face value. Plus OR Minus 30ish HP
do a online search for your area. you should find plenty of tune/Dyno shops. Roughly
$180.00 for a dyno pull
Stock was about 170HP you now have slightly bigger valves. Face value. Plus OR Minus 30ish HP
do a online search for your area. you should find plenty of tune/Dyno shops. Roughly
$180.00 for a dyno pull
Last edited by 88gta3508; Nov 13, 2015 at 10:33 AM.
Supreme Member
Joined: Oct 2004
Posts: 4,528
Likes: 240
From: Henrietta NY
Car: 1984 Trans Am L69
Engine: Sniper EFI Powered 355
Transmission: WC T5 w/ Steel Support Plate
Axle/Gears: 3.42 10 Bolt Posi
Re: How much HP do you think I have?
You dont mention cam or what 305 it started life as. Maybe 130-150 whp?
Joined: Sep 2004
Posts: 5,906
Likes: 240
From: Chicagoland Suburbs
Car: 1989 Trans Am GTA
Engine: LT1, AFR 195cc, 231/239 LE cam.
Transmission: M28 T56
Axle/Gears: 3.23 10bolt waiting to explode.
Re: How much HP do you think I have?
350 heads on a 305 block? Your compression is probably crap.
You are probably making less power than when it was stock.
You are probably making less power than when it was stock.
Member
Joined: Nov 2013
Posts: 168
Likes: 0
From: Tulsa, OK
Car: 1992 Camaro Z28
Engine: L98
Transmission: 700R4
Axle/Gears: 3.23
Re: How much HP do you think I have?
350 heads with a carbureted IROC intake? So an LG4 intake with lower compression? I'd say 150 whp, depending on condition.
Thread
Thread Starter
Forum
Replies
Last Post