87 -5.0 305 tpi auto to 350 5.7 tpi auto
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Junior Member
Joined: Oct 2007
Posts: 57
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From: Chicago O'Hare
Car: 1987 IROC Z28 Camaro
Engine: 350 TPI
Transmission: Stock
Axle/Gears: Stock
87 -5.0 305 tpi auto to 350 5.7 tpi auto
87 305 5.0 auto t400
I would like to put a 350 tpi 5.7 motor in my car couple questions.
1.Should I puchase a new or used engine?
2.Can i use the top end of the 305 for the 350?, if not whats a good top end to go with ?
3.Will my trans work with a 350?
4.what problems will i run into?
5.I want to put a 3:73 in my car to swap a 2:73 how much does it cost that do i do?????????????????????????????????
I would like to put a 350 tpi 5.7 motor in my car couple questions.
1.Should I puchase a new or used engine?
2.Can i use the top end of the 305 for the 350?, if not whats a good top end to go with ?
3.Will my trans work with a 350?
4.what problems will i run into?
5.I want to put a 3:73 in my car to swap a 2:73 how much does it cost that do i do?????????????????????????????????
Joined: Sep 2004
Posts: 2,777
Likes: 7
From: Casselberry, FLA
Car: 88 V6 'bird/89TBI bird/85 T/A
Engine: 2.8/TBI/TPI
Transmission: V8 T-5/700R4 x2
Axle/Gears: 3.42 open/2.73 open/ 3.27 9 bolt
Re: 87 -5.0 305 tpi auto to 350 5.7 tpi auto
Welcome to the board!
1.) What is your budget? If you're going to buy new, the sky is the limit. I recommend this one and a new LT1 camshaft:
http://www.sdparts.com/product/12556...eAssembly.aspx
2.) Yes. Make sure you have 1.94" or 2.02" intake valves. Your intake is gonna run out of power in stock trim above 4500 rpms. Now is the time to invest in either a modded LT1 intake or a Holley Stealth Ram. You can work your stock intake over pretty hard (siamesed or aftermarket runners and base) for a street car with good results but it will never have the potential of the others mentioned.
3.) Yes
4.) Replace your PROM, ESC module and knock sensor with L98 (350) parts. You will either need 350 injectors or a new fuel pump with increased pressure available by means of an adjustable regulator.
5.) Again, your budget determines that. You can get a complete used rear off of this site for a few hundred bucks. New can get into the thousands quickly.
Good Luck!
1.) What is your budget? If you're going to buy new, the sky is the limit. I recommend this one and a new LT1 camshaft:
http://www.sdparts.com/product/12556...eAssembly.aspx
2.) Yes. Make sure you have 1.94" or 2.02" intake valves. Your intake is gonna run out of power in stock trim above 4500 rpms. Now is the time to invest in either a modded LT1 intake or a Holley Stealth Ram. You can work your stock intake over pretty hard (siamesed or aftermarket runners and base) for a street car with good results but it will never have the potential of the others mentioned.
3.) Yes
4.) Replace your PROM, ESC module and knock sensor with L98 (350) parts. You will either need 350 injectors or a new fuel pump with increased pressure available by means of an adjustable regulator.
5.) Again, your budget determines that. You can get a complete used rear off of this site for a few hundred bucks. New can get into the thousands quickly.
Good Luck!
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