How much HP????
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Joined: Dec 2000
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From: Pflugerville, TX USA
Car: 1999 Camaro Z28
Engine: LS1 V8
Transmission: T-56 6spd
GM never made a "stock" 355 engine in our cars. If you have a block that has been bored .30 over to make it 355ci and you have retained all factory components, I would guess it might give you anywhere from 20-25 horse power with absolutely no other modifications. This is just my "guesstimate" assuming a stock '88 350 TPI motor rated at 235HP from the factory.
Joined: May 2009
Posts: 562
Likes: 27
From: Buffalo, NY
Car: 92 Z28
Engine: LS3
Transmission: TR6060
Axle/Gears: Strange S60 3.73
Re: How much HP????
I think Firebirds had 10 less HP due to the air intake being more restrictive. Dual cat optioned cars (N10) were rated at 10 more hp.
86 camaro - 220 hp @ 4200, 320tq @ 3200
87 camaro - 225@4400 330@2800
88 camaro - 230@4400 330@3200
89 camaro - 240@4400 345@3200
90-92 camaro 245@4400 345@3200
http://www.f-body.org/tech/tech.htm#ThirdGen
86 camaro - 220 hp @ 4200, 320tq @ 3200
87 camaro - 225@4400 330@2800
88 camaro - 230@4400 330@3200
89 camaro - 240@4400 345@3200
90-92 camaro 245@4400 345@3200
http://www.f-body.org/tech/tech.htm#ThirdGen