newbie question motor 305or350?
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Junior Member
Joined: Jan 2010
Posts: 19
Likes: 0
From: Tulsa OK
Car: 89 formula firebird
Engine: formula 305 TPI
Transmission: 5 speed
Axle/Gears: 3.45
newbie question motor 305or350?
i have a 89 formula firebird according to vin its a tpi 305 hes says its 350 how do i know?
Senior Member
Joined: May 2006
Posts: 581
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From: NY
Car: 00 SSEi / 94 C4
Engine: 231 / 383
Transmission: 4T65E / ZF 6sp
Axle/Gears: 2.93 / Dana 44 3:45
Re: newbie question motor 305or350?
welcome
Newbie
(1) font passenger side engine block and head Vin stamp
(2) Driver side engine block casting just before the transmission
(3) Driver side engine block casting just below the 3rd spark plug (#5) just before the oil filter
happy findings
Newbie
(1) font passenger side engine block and head Vin stamp
(2) Driver side engine block casting just before the transmission
(3) Driver side engine block casting just below the 3rd spark plug (#5) just before the oil filter
happy findings
Supreme Member
iTrader: (4)
Joined: Mar 2009
Posts: 3,079
Likes: 4
From: Pepperell, MA
Car: 1987 Trans Am
Engine: LQ9/L92
Transmission: 4L60E
Re: newbie question motor 305or350?
88gta's got the right idea with where to find the casting numbers. www.mortec.com is great for determining where your motor came from and size. 350 swaps are very common and visually won't look any different, so casting is your best bet
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