305....High or Low output???????
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
Some wise guy is going to say all 305's are low output...
A little more info like year, induction type (carb, TBI, TPI) would be helpful, but, to answer your question: Check the eighth digit of your VIN - "H" = LG4, which should mean it has a single snorkle air cleaner and small exhaust, earlier versions also had lower compression; "G" - L69, which is the high-output carb version with dual-snorkle air cleaner and larger exhaust; "F" = TPI 305, which is higher power than a TBI - Manual transmission models had a better cam than auto versions, so also had more power. The VIN code for the TBI LO3 escapes me right now.
If the eighth character is an "8", you have a 350.
If I understand this correctly, only the L69 was called a "high output" engine.
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82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R. 2.93 limited slip. Cat-back from '91 GTA, Accel HEI SuperCoil. AMSOIL syn lubes bumper-to-bumper. Daily driver, work-in-progress (LG4 w/LB9 block, ZZ3 cam and intake, TBD heads, Hooker headers & y-pipe, 3" Catco cat).
57 Bel Air, my 1st car. 0.030 over 396, Weiand Action+, Edelbrock 1901 Q-Jet, Jacobs Omnipack, 1-3/4" headers, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, 3.08 8.2" 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Best 15.1 @ 5800' Bandimere. Daily driver while Camaro was being put together.
A little more info like year, induction type (carb, TBI, TPI) would be helpful, but, to answer your question: Check the eighth digit of your VIN - "H" = LG4, which should mean it has a single snorkle air cleaner and small exhaust, earlier versions also had lower compression; "G" - L69, which is the high-output carb version with dual-snorkle air cleaner and larger exhaust; "F" = TPI 305, which is higher power than a TBI - Manual transmission models had a better cam than auto versions, so also had more power. The VIN code for the TBI LO3 escapes me right now.
If the eighth character is an "8", you have a 350.
If I understand this correctly, only the L69 was called a "high output" engine.
------------------
82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R. 2.93 limited slip. Cat-back from '91 GTA, Accel HEI SuperCoil. AMSOIL syn lubes bumper-to-bumper. Daily driver, work-in-progress (LG4 w/LB9 block, ZZ3 cam and intake, TBD heads, Hooker headers & y-pipe, 3" Catco cat).
57 Bel Air, my 1st car. 0.030 over 396, Weiand Action+, Edelbrock 1901 Q-Jet, Jacobs Omnipack, 1-3/4" headers, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, 3.08 8.2" 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Best 15.1 @ 5800' Bandimere. Daily driver while Camaro was being put together.
Supreme Member
Joined: Jul 1999
Posts: 18,457
Likes: 16
From: Loveland, OH, US
Car: 4
Engine: 6
Transmission: 5
TBI... say no more...
It's low output. There's no such thing as a high output one, it's not even like some are lower output than others. All the TBI 305s are the same, auto or manusl, very minor variations if any from year to year.
There were 2 versions of TPI 305s, and also of carbed 305s that were used in these cars. For those, the terms high and low output have meaning.
------------------
"So many Mustangs, so little time..."
ICON Motorsports
It's low output. There's no such thing as a high output one, it's not even like some are lower output than others. All the TBI 305s are the same, auto or manusl, very minor variations if any from year to year.
There were 2 versions of TPI 305s, and also of carbed 305s that were used in these cars. For those, the terms high and low output have meaning.
------------------
"So many Mustangs, so little time..."
ICON Motorsports
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