Porting dual plane intake
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Car: 1991 firebird
Engine: TBI 305 (built)
Transmission: T5
Axle/Gears: 4.10
Porting dual plane intake
Main ? Is what is The point of the checkered pattern in the bottom of the
Dual plane and factory intakes ? I'm thinking about removing this ? I already removed the center divider . And am working on shortening all of the short side radius and knife edging the runner seperations .. Any tips/tricks/suggestions would be apretiated
Dual plane and factory intakes ? I'm thinking about removing this ? I already removed the center divider . And am working on shortening all of the short side radius and knife edging the runner seperations .. Any tips/tricks/suggestions would be apretiated
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From: Sanctuary state
Car: 67 ******mobile
Engine: 385 Solid roller
Transmission: T-56
Axle/Gears: 4.11
Re: Porting dual plane intake
Air likes smooth rounded edges>sharp
Leave the waffling there
What was the reasoning for cutting the divider out
pm me some pics maybe I can help
Leave the waffling there
What was the reasoning for cutting the divider out
pm me some pics maybe I can help
Last edited by cuisinartvette; May 3, 2013 at 06:08 PM.
Thread Starter
Supreme Member
iTrader: (-3)
Joined: Dec 2012
Posts: 1,184
Likes: 1
Car: 1991 firebird
Engine: TBI 305 (built)
Transmission: T5
Axle/Gears: 4.10
Re: Porting dual plane intake
Too late on the waffleing :-/ .. i removed it closest to the runners and around the divider I'm just gonna leave that part textured from the deburr bit .. What is the purpose of it ? Ill post some pics here .. I haven't removed alot of material just been smoothing out the rough Chinese casting .. This is a summit stage 1 intake (idle -6000)
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Thread Starter
Supreme Member
iTrader: (-3)
Joined: Dec 2012
Posts: 1,184
Likes: 1
Car: 1991 firebird
Engine: TBI 305 (built)
Transmission: T5
Axle/Gears: 4.10
Re: Porting dual plane intake
Alright wrong dang pic .. Moderators delete ? Ima post
2 More n I'm done.. I cannot post multiple pics in one post from my phone .. Moderators y'all can consolidate my pics to fewer posts if neccessary ..
Sorry !
2 More n I'm done.. I cannot post multiple pics in one post from my phone .. Moderators y'all can consolidate my pics to fewer posts if neccessary ..
Sorry !
Thread Starter
Supreme Member
iTrader: (-3)
Joined: Dec 2012
Posts: 1,184
Likes: 1
Car: 1991 firebird
Engine: TBI 305 (built)
Transmission: T5
Axle/Gears: 4.10
Re: Porting dual plane intake
I'm nowhere near done on this intake .. N like I said I really haven't removed any material just been slightly smoothing everything out
Thread Starter
Supreme Member
iTrader: (-3)
Joined: Dec 2012
Posts: 1,184
Likes: 1
Car: 1991 firebird
Engine: TBI 305 (built)
Transmission: T5
Axle/Gears: 4.10
Re: Porting dual plane intake
I cut the divider down because its TBI ans so both banks can be fed air from Both throttle body bores
Thread Starter
Supreme Member
iTrader: (-3)
Joined: Dec 2012
Posts: 1,184
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Car: 1991 firebird
Engine: TBI 305 (built)
Transmission: T5
Axle/Gears: 4.10
Re: Porting dual plane intake
No comments ? Ill admit Idk what I'm Doin lol .. First intake I've attempted to port .. Only thing I've done port Work to is 3/5&7 HP Briggs&stratton flatheads .. I had a 5hp I built that made 12hp @ 11k rpm At 12 years old .. And stayed together for about a year racing dirt track .. And ran 71mph in 1/8th mile haha .. Been wanting to build another one just for the heck of it
Thread Starter
Supreme Member
iTrader: (-3)
Joined: Dec 2012
Posts: 1,184
Likes: 1
Car: 1991 firebird
Engine: TBI 305 (built)
Transmission: T5
Axle/Gears: 4.10
Re: Porting dual plane intake
Anyone got a fel pro intake manifold gasket # for these TBI heads that would work well ? I want good gaskets not cheapo .. Heads will be Milled .010-.015
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