POTRTING HEADS
Junior Member
Joined: Mar 2006
Posts: 79
Likes: 0
From: Center Valley, PA
Car: 88 Monte Carlo
Engine: 305
Transmission: Auto
Axle/Gears: Really Tall ones. Probably 2.73's
Re: POTRTING HEADS
not much, but if you do it right (which isnt hard) you will see a boost in throttle response and "seat-of-pants" power for sure.
Supreme Member
Joined: Sep 2001
Posts: 6,111
Likes: 53
From: Ontario, Canada
Car: 1988 Firebird S/E
Engine: 406Ci Vortec SBC
Transmission: TH-350/3500stall
Axle/Gears: 7.5" Auburn 4.10 Posi-Traction
Re: POTRTING HEADS
If you were to port the heads on a stock LG4 305 you'd gain about 10-15hp.
if you were to port the heads on a LG4 that has other performance upgrades,
you could see as much as 60 additional hp over the stock head.
the more radical the rest of the motor is, the more a ported head will help make power.
if you were to port the heads on a LG4 that has other performance upgrades,
you could see as much as 60 additional hp over the stock head.
the more radical the rest of the motor is, the more a ported head will help make power.
Supreme Member
iTrader: (1)
Joined: Jul 2004
Posts: 10,763
Likes: 4
From: Calgary, AB, Canada
Car: 1982 Trans-Am
Engine: 355 w/ ported 416s
Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73
Re: POTRTING HEADS
After exhaust, camshaft, and air cleaner upgrades - porting heads give you the 50-60HP gain F-bird is talking about. For under $1500 or so grand total i'd hope.
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