the bird is back on the road with more hp!

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Feb 4, 2001 | 02:53 AM

3.1 firebird

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From: st.louis

the bird is back on the road with more hp!

I cant rememeber if I posted about this before or not, but I was changing spark plugs about 3 weeks ago and noticed #5 was covered in oil, so I did a compression test. It only had 80, the rest had around 175. I then ripped the top half of the motor apart(heads,manifold,heads,etc.) , jacked the engine up a few inches , so I could pull the oil pan off. I then pushed the piston out the top and put new rings in. Meanwhile I had the heads in the machine shop getting .020 plained off,magnafluxed,stiffer springs,and a valve job done. I just got the car together a few days ago and I definitely feel an increase in power! Restoring the comprseeion in #5 along with the compression ratio increase really made a difference.

Feb 4, 2001 | 08:53 AM

Joe_L

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Joined: Jan 2001

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From: Halifax, NS,Canada

Car: 1995 Z28

Engine: LT1

Transmission: Built 4L60E

Axle/Gears: 3.23's - Limited Slip

Did you also have the valves ground and reseat them?
Whats the milage on your car?

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[b]My site http://www.camaro3rdgen.20m.com

Feb 4, 2001 | 09:11 AM

TechSmurf

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Joined: Dec 2000

Posts: 2,375

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From: Tucson, AZ, USA

Car: '99 Trans Am, '86 Camaro

Engine: LS1, Scrap

Transmission: T56, T5

Axle/Gears: 3.42 Stock ZT, 3.42 Open

Joe, just a guess, but that's probably covered by 'valve job' =P

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'86 Camaro SC, black /w silver racing stripes
2.8l MPFI/700r4
In search of new v8 engine & transmission
MSD coil, Accel 8mm wires, SplitFire plugs, Gabriel hijackers

Feb 4, 2001 | 05:00 PM

Joe_L

Supreme Member

Joined: Jan 2001

Posts: 1,221

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From: Halifax, NS,Canada

Car: 1995 Z28

Engine: LT1

Transmission: Built 4L60E

Axle/Gears: 3.23's - Limited Slip

Tech Smurf, sorry I am reading these things to fast sometimes...I just tought it would have been dumb to do an engine over without a valve job.
Thanx for pointing it out though

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[b]My site http://www.camaro3rdgen.20m.com

Feb 7, 2001 | 11:23 PM

Red91Bird

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Joined: Jun 2000

Posts: 234

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From: Fort Worth TX, USA

3.1 any chance of getting some detailed pics of your header job with the 3.4L headers.... Send to Dmruff1@yahoo.com i am REALLY interested in copycating it as i am having a Y pipe made for my 91.... thanks... BTW gratzie on the freshing up job

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91 Firebird
3.1 w/ K&N filter, 160 stat, No TB heat, Direct Cold air, DynoMax CatBack, B&M MegaShifter, Performance Shift Kit, gasket matched upper and lowered intake manifold, race underDrive pullies, Splitfire plugs, 8.5mm "stock" wires, Jensen CD330X Head unit, Jensen 120watt rear speakers
Stock front speakers,

0-30mph 4.15 Best 3.98
0-60mph 9.11 Best 8.91

Now on the workbench:

Preped 3.1L bored 1mm over, forged rods, Ported and polished GM iron heads, Crane 1.6:1 rockers, PAW Cam 280/290, .443/.465, Holley Commander series fuel management system.

Slowly but surely seeking a 14.2 in the 1/4 mile N/A OR 13.5 running max 9psi boost.