how to get the most out of 355 SHORTBLOCK??
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Joined: Jul 2003
Posts: 4,803
Likes: 2
From: Grand Rapids, MI
Car: Z28
Engine: Sb2.2 406
Transmission: Jerico 4 speed
Axle/Gears: Ford 9" 3.60
You don't really need 2 consecutive threads asking the same thing.
How do you get 400 hp out of a 350? Simple, get rid of these: Those are smogger crap POS disgraces of cast iron. They have large 76cc smogger crap POS combustion chambers that kill compression. They have thin casting walls in critical areas and some are prone to cracking (later castings, there ARE HD castings out there, but either way, smogger crap.)
Get a better set of heads. Then go from there.
Once you get a better set of heads, RPM series intake and a cam. If you get a cam, the best thing you can do is get a stall.
Other than that, here's how it goes: the 882's have large chambers that kill compression. Any aftermarket cam that gets 400 hp out of a 350, requires more like 9-10:1 compression. Anything less and the cam reduces cylinder pressure which hurts torque. That makes the car no fun on the street.
On the flip side, any cam that can use the factory stall speed, probably won't make 400 hp. Increasing the stall speed would be a wise choice.
It's your call.
How do you get 400 hp out of a 350? Simple, get rid of these:
fresh set of 882
Get a better set of heads. Then go from there.
Once you get a better set of heads, RPM series intake and a cam. If you get a cam, the best thing you can do is get a stall.
Other than that, here's how it goes: the 882's have large chambers that kill compression. Any aftermarket cam that gets 400 hp out of a 350, requires more like 9-10:1 compression. Anything less and the cam reduces cylinder pressure which hurts torque. That makes the car no fun on the street.
On the flip side, any cam that can use the factory stall speed, probably won't make 400 hp. Increasing the stall speed would be a wise choice.
It's your call.
Last edited by Stekman; Nov 2, 2004 at 09:30 PM.
Supreme Member
Joined: Jan 2002
Posts: 3,852
Likes: 1
From: Valley of the Sun
Car: 82 Z28
Engine: Al LT1 headed LG4 305
Transmission: TH350
Axle/Gears: 3.73 posi with spacer
Yeah whats the deal, 2 threads? I said pretty much the same thing in your other before i saw this one.
Thread Starter
Member
Joined: Nov 2004
Posts: 144
Likes: 0
From: Oak Ridge, TN
Car: 86 Z-28 Police Interceptor
Engine: 305 but building a 350
Transmission: 700r4 with shift kit
sorry about the 2 threads I am new to this site. In the other site I am a member of they barked at me for asking to many ?'s in the same post, go figure lol
Joined: Mar 2000
Posts: 43,187
Likes: 43
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
If you keep the theme the same, go ahead and continue the thread.
We'll keep the discussion on the other one now.
We'll keep the discussion on the other one now.
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