how big is to big?
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Junior Member
Joined: Oct 2002
Posts: 49
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From: Mississauga,ontario Canda
Car: 85 iroc-z
Engine: 350-headers,cam,3"catback
how big is to big?
hey sup was just wondering wat the biggest size of headers u can but on a LG4 engine(is 1 5/8 good enough or is 1 3/4 better
thx
thx
Senior Member
iTrader: (1)
Joined: Oct 2003
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From: Montgomery, AL
Car: 1985 Trans Am
1 5/8 is big enough for a 305, i ran them on my 350 and 383 also, my biggest restriction was my y-pipe. i didn't even get 1 3/4 until i got the 406. generally, 1 3/4 is good for 350# CID
Supreme Member
Joined: Jul 2001
Posts: 1,766
Likes: 2
From: New Palestine, IN (Just East of Indy)
Car: '85 Z28
Engine: 305
Transmission: WC T5, 3.23 posi
I'd say stick to 1 5/8". You don't need anything more, especially for a 305. I wouldn't reccomend 1 3/4" unless you're pushing over 450-500 ponies.
Member
Joined: Dec 2002
Posts: 148
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From: fort walton beach florida
Car: 1989 rs camaro, 1990 jeep wrangler, 1995 eagle talon tsi awd
Engine: nothing right now
Transmission: j.w. performance th350 3500 10" stall... soon to be t56
too big is when you can stick your fist in it and its only a 305
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