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a start

Old Sep 6, 2005 | 12:33 AM
  #1  
steve87iroc's Avatar
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From: sandusky
Car: 1987 iroc z
Engine: 355 dart platinum 215cc heads
Transmission: <<BLOWN UP TH400>>
Axle/Gears: 10 bolt 4.11's
a start

hopefully i can get it in by winter gets here. it aint going to be much just somthing to get me around. i was woundering how much power ill be making. 350 .30 over performer rpm intake,holley 650 double pumper or would a 600 be good ,
not much of a cam but it has
int.440 lift exh.440 lift, 882 heads o well, roller rockers, 9.5 compression. thanks
Attached Thumbnails a start-74.jpg  

Last edited by steve87iroc; Sep 6, 2005 at 12:55 AM.
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Old Sep 6, 2005 | 04:46 AM
  #2  
ede's Avatar
ede
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From: Jackson County
not much, maybe even less than not much, but that shouldn't really matter as long as it looks nice.
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Old Sep 6, 2005 | 06:11 AM
  #3  
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From: Lancashire County, England, UK
Car: VIN=85 T/A, CAR=82/3 T/A gfx, go figure. She's a T/A anyway!
Engine: 5.0, Holley 600 cfm 4-barrel
Transmission: THM350 ??
As an interested, but uneducated Limey, how much is not much? 200, 300 bhp??

Mark.
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Old Sep 6, 2005 | 08:21 AM
  #4  
84z28350's Avatar
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From: Yellowknife, NWT, Canada
Car: 84 Z28
Engine: 357
Transmission: TH-350C
Axle/Gears: 3.43
i think you would be lucky to get 300bhp running no accessories at all.
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Old Sep 6, 2005 | 01:52 PM
  #5  
steve87iroc's Avatar
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From: sandusky
Car: 1987 iroc z
Engine: 355 dart platinum 215cc heads
Transmission: <<BLOWN UP TH400>>
Axle/Gears: 10 bolt 4.11's
it will be over 200hp though right
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Old Sep 6, 2005 | 09:30 PM
  #6  
eric17422001's Avatar
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Joined: Nov 2001
Posts: 870
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From: Savannah, GA
Car: 3
Engine: inboard
Transmission: underfloor
Well, I have a .030" 350 with flat tops, pistons are .045" in the hole, with 76cc 882 heads, it's only about 8.3:1 CR and I am running a Comp 268XE cam, Wieand action plus dual plane, and Q-jet.

It's in my S10, the cam's really mis matched to the CR but it was the first SBC I had put together at the time, though I have built lots of other engines.

It rear wheel dynoe'd 201hp@5000 and 248 ft/lbs of torque@3400. Pulls really hard 2500-5000, but then falls flat rapidly as the heads don't flow over 5000. Figure 20% drivetrain loss and it's around 240hp at the crank. It is reliable, I have about 35,000 mile on it, lots of long trips and 1/8 mile dragstrip passes, I blew a hole in the rad and the temp gauge didn't work reading steam as it lost coolant so fast, I got it hot enough to discolor the paint on the block but it cranked right back up when cooled down. I haven't been able to kill it and lord knows I have tired.

If yours has a calculated 9.5:1 CR and roller rockers it'll do maybe 15 horse more than mine. You can always swap heads in the future and get more out of it. But it should make 250-270 or so at the crank. In any case it's going to feel like a top fueler compared to the tired 305 you used to have. Enjoy it.
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Old Sep 6, 2005 | 09:45 PM
  #7  
eric17422001's Avatar
Senior Member
 
Joined: Nov 2001
Posts: 870
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From: Savannah, GA
Car: 3
Engine: inboard
Transmission: underfloor
Well, I have a .030" 350 with flat tops, pistons are .045" in the hole, with 76cc 882 heads, it's only about 8.3:1 CR and I am running a Comp 268XE cam, Wieand action plus dual plane, and Q-jet.

It's in my S10, the cam's really mis matched to the CR but it was the first SBC I had put together at the time, though I have built lots of other engines.

It rear wheel dynoe'd 201hp@5000 and 248 ft/lbs of torque@3400. Pulls really hard 2500-5000, but then falls flat rapidly as the heads don't flow over 5000. Figure 20% drivetrain loss and it's around 240hp at the crank. It is reliable, I have about 35,000 mile on it, lots of long trips and 1/8 mile dragstrip passes, I blew a hole in the rad and the temp gauge didn't work reading steam as it lost coolant so fast, I got it hot enough to discolor the paint on the block but it cranked right back up when cooled down. I haven't been able to kill it and lord knows I have tired.

If yours has a calculated 9.5:1 CR and roller rockers it'll do maybe 15 horse more than mine. You can always swap heads in the future and get more out of it. But it should make 250-270 or so at the crank. In any case it's going to feel like a top fueler compared to the tired 305 you used to have. Enjoy it.
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Old Sep 6, 2005 | 10:35 PM
  #8  
corky9491's Avatar
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Joined: Apr 2005
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From: Minnesota
Car: 83 Berlinetta
Engine: 355
Transmission: TH350
Hey ede. Not trying to ruffle any feathers but why not just a straight answer.
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Old Sep 6, 2005 | 10:57 PM
  #9  
Irockz's Avatar
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From: Springfield,Mo
Car: 87 Berlinetta,work in progress
Engine: 468 BB,still in the build process
Transmission: TH350,3500 stall
Axle/Gears: 9" Ford,learning how to live under
I'd like to think you'll be at 300hp or a little more at the flywheel.That may not be a whole lot compared to some of us,but don't let some of these sarcastic bastards ruin your fun,a 300 hp mill in a 3rd gen is still pretty fun,and will make a great driver.Just enjoy it,I'm sure it's a ton better than anything GM chose to drop in for us.Good luck,sounds like a fun little driver
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Old Sep 7, 2005 | 05:42 AM
  #10  
ede's Avatar
ede
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From: Jackson County
Originally posted by corky9491
Hey ede. Not trying to ruffle any feathers but why not just a straight answer.
ok, no problem, when i said not much i meant 213 HP
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Old Sep 7, 2005 | 07:44 PM
  #11  
corky9491's Avatar
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From: Minnesota
Car: 83 Berlinetta
Engine: 355
Transmission: TH350
Ede. I know with the info supplied that you can't give an exact figure, but you could have said between 200-250.
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Old Sep 8, 2005 | 04:18 AM
  #12  
Difflock's Avatar
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Joined: May 2005
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From: Lancashire County, England, UK
Car: VIN=85 T/A, CAR=82/3 T/A gfx, go figure. She's a T/A anyway!
Engine: 5.0, Holley 600 cfm 4-barrel
Transmission: THM350 ??
Thanks for the info guys.

Mark.
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