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Old 08-06-2008, 01:12 PM   #1
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Rebuild 91 305 TPI
Hi everyone I'm new here,
I have a 91 GTA with the 305 TPI that needs rebuilding. I really just want to keep it simple but would like to know if anyone has any suggestions on upgrades or things that should be address about these motors during rebuild. It will never be raced so I'm not looking to upgrade to a 350. Who has the best rebuild kits? Thanks,
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Old 08-06-2008, 02:08 PM   #2
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Location: St. Louis, Missouri
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Car: 1989 Firebird Formula
Engine: 355 HSR
Transmission: 700R4
Axle/Gears: 3.73 9 bolt Posi

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Re: Rebuild 91 305 TPI
There are so many 305 posts on this site. Do a quick search and you will find all kinds of upgrade parts.
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355, balanced rotating assembly, flat-top Speed Pro coated skirt pistons, ~10:1, Holley Stealth Ram, Dart Iron Eagle 180cc Heads, XFI268-13 cam, Hughes 2500 Stall, Hedman Headers, Ford 24# Injectors, CC 1.6 Roller Rockers, Cloyes Double-Roller Timing Chain, Kirban AFPR, Aluminum Underdrive pulleys, smog/egr delete
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Old 08-06-2008, 05:06 PM   #3
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Re: Rebuild 91 305 TPI
I did try a search first but most of the answers recommend upgrading to the 350. I would like to stay # matching and not have to change the stock computer. Anyone do a near stock rebuild? What cam did you use and do you recommend it? What rebuild kit do you recommend? Thanks,
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Old 08-07-2008, 02:32 PM   #4
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Re: Rebuild 91 305 TPI
I was looking at the tech data for 91 and noticed the manual cars had 230hp where my auto has only 205hp. Anyone know what the differences are?
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Old 08-07-2008, 04:36 PM   #5
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Car: 1989 Firebird Formula
Engine: 355 HSR
Transmission: 700R4
Axle/Gears: 3.73 9 bolt Posi

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Re: Rebuild 91 305 TPI
Auto Vs. manual... there is less power loss in the drive train with a manual.
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355, balanced rotating assembly, flat-top Speed Pro coated skirt pistons, ~10:1, Holley Stealth Ram, Dart Iron Eagle 180cc Heads, XFI268-13 cam, Hughes 2500 Stall, Hedman Headers, Ford 24# Injectors, CC 1.6 Roller Rockers, Cloyes Double-Roller Timing Chain, Kirban AFPR, Aluminum Underdrive pulleys, smog/egr delete
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Old 08-07-2008, 04:36 PM
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