305 to 350 or 383
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Supreme Member
Joined: Jul 2002
Posts: 1,700
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From: Wall Township, NJ
Car: 1987 "1991 Z" Sport Coupe
Engine: LG4
Transmission: TH700R4
305 to 350 or 383
in the near future...(when i get some money and a job)...i was thinking to replace my engine. right now in my 87 sport coupe i have a 305. what major changes would i have to do to put in a 350? and what major changes would i have to do to put in a 383? thanks for the help
bub
heres my measly 305
bub
heres my measly 305
Joined: Mar 2000
Posts: 43,187
Likes: 42
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
"Major changes"?
In a word, "none".
That is, none that you wouldn't have to do to wake up that 305.
Take a look at the magazine articles on this board, the two with "Stroke in the Desert" in the titles. Steve Green documents how he put a 383 into his 'Bird.
The things that have to change are exhaust, ignition, and aircleaner. This assumes you do the cam & heads right when you put the 350 or 383 together. With a 383, you need to deal with balancing - externally balanced flex plate & harmonic damper, unless you spend the bucks to get an internally balanced crank.
In a word, "none".
That is, none that you wouldn't have to do to wake up that 305.
Take a look at the magazine articles on this board, the two with "Stroke in the Desert" in the titles. Steve Green documents how he put a 383 into his 'Bird.
The things that have to change are exhaust, ignition, and aircleaner. This assumes you do the cam & heads right when you put the 350 or 383 together. With a 383, you need to deal with balancing - externally balanced flex plate & harmonic damper, unless you spend the bucks to get an internally balanced crank.
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