Engine Builds for 305(LG4)
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Junior Member
Joined: Dec 2001
Posts: 69
Likes: 0
From: Brackney ,PA
Car: 87 Camaro Sportscoupe
Engine: LG4
Engine Builds for 305(LG4)
Anyone want to share there build method for obtaining more power from the LG4? Nothinhg radicle. Just some simple how to's
on gaining some HP for the 305ci. Lets here it fello Third Gen fans.
:hail:
on gaining some HP for the 305ci. Lets here it fello Third Gen fans.
:hail:
Supreme Member
Joined: Jun 2001
Posts: 3,238
Likes: 4
From: Calgary, Alberta, Republic of Western Canada
Car: 1986 Sport Coupé
Engine: 305-4v
Transmission: 700R4 and TransGo2
Just do a search on the subject. Try LG4, you'll find a ton of stuff 
They respond extremely well.

They respond extremely well.
Joined: Mar 2000
Posts: 43,187
Likes: 46
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
Read my sig.
Emissions legal to boot. About $2400 invested (not including SFC or shift kit, which aren't installed yet anyway).
Emissions legal to boot. About $2400 invested (not including SFC or shift kit, which aren't installed yet anyway).
Supreme Member
iTrader: (1)
Joined: Feb 2000
Posts: 7,964
Likes: 4
From: Norfolk, VA. USA
Car: 86 Trans Am, 88 Formula
Engine: 95LT4, 305TPI
Transmission: T56, T5
I put an Edelbrock 1406 carb, Edelbrock 7101 Dual Plane Hi-Rise intake, vacuum advanced distributor, MSD Coil, Flowmaster muffler, stock manifolds and stock exhaust to the flowmaster.
I ran a best of 14.94 @ 91.67mph.

I've got a TPI on it now.
I ran a best of 14.94 @ 91.67mph.

I've got a TPI on it now.
Joined: Mar 2000
Posts: 43,187
Likes: 46
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
I'll prioritize them for you: Air cleaner, exhaust (heads to bumper), ignition (module & coil), cam, heads, intake, compression (assuming '84-older LG4 - '85-newer okay unless Canadian).
Did I mention carb? No, for a very good reason - Just tune what you've got.
Did I mention carb? No, for a very good reason - Just tune what you've got.
Supreme Member
Joined: Apr 2000
Posts: 1,338
Likes: 0
From: Chander, Arizona USA
Car: 2006 Silverado 1500
Engine: 5.3L
Transmission: 4L60E
there is too much to list. you should start by saying how much you'd like to spend and what your willing to do. btw zepher, 14.94 isn't exactly fast especially for a non-emissions legal car.
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Supreme Member
iTrader: (1)
Joined: Feb 2000
Posts: 7,964
Likes: 4
From: Norfolk, VA. USA
Car: 86 Trans Am, 88 Formula
Engine: 95LT4, 305TPI
Transmission: T56, T5
Originally posted by zippy
there is too much to list. you should start by saying how much you'd like to spend and what your willing to do. btw zepher, 14.94 isn't exactly fast especially for a non-emissions legal car.
there is too much to list. you should start by saying how much you'd like to spend and what your willing to do. btw zepher, 14.94 isn't exactly fast especially for a non-emissions legal car.
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