mad 305 project
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Joined: Oct 2010
Posts: 271
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From: colorado
Car: 1987 formula
Engine: 305 tpi
Transmission: t5
Axle/Gears: 3.45
mad 305 project
My firebird has a 305 that i have gradually been modding and would like feedback.
-cold air intake with 3" pvc intake- already on
-msd al6- already on
-nitrous 75 shot- already on
-series 40 muffler- already on
-smog pump gone
-water injection- have and will increase nitrous shot with
-1.7 roller rockers- have from previous project and did have on but didnt have tall valve covers so they will work
-remove cat conv- soon
-afpr- soon
-t-56 trans- soon
-cold air intake with 3" pvc intake- already on
-msd al6- already on
-nitrous 75 shot- already on
-series 40 muffler- already on
-smog pump gone
-water injection- have and will increase nitrous shot with

-1.7 roller rockers- have from previous project and did have on but didnt have tall valve covers so they will work
-remove cat conv- soon
-afpr- soon
-t-56 trans- soon
Last edited by 87hellbird; May 29, 2011 at 11:17 AM. Reason: title
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From: Location, Location!
Car: 92 T/A 'vert
Engine: Mild .040 over L98 4 bolt mains
Transmission: Mostly stock 700R4, 2600 Vigilante
Axle/Gears: LS1 3.42
Re: mad 305 project
I vote for cam/heads/headers.
Thread Starter
Member
Joined: Oct 2010
Posts: 271
Likes: 0
From: colorado
Car: 1987 formula
Engine: 305 tpi
Transmission: t5
Axle/Gears: 3.45
Re: mad 305 project
well my thought was with the 1.7 roller rockers it would create more lift and with the difference ine lift i didnt want to go bigger with the cam to get clearence problems and from what i could tell when i had them on it made a big difference almost doubling my idle speed. the heads i kinda like for the comp ratio for nitrous and headers i was going to put an even better muffler and without the cat i still want a little back pressure.
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