08-25-2005, 10:49 AM
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#1
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AF Enthusiast
Join Date: Jul 2005
Location: Hamilton, New Jersey
Posts: 788
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305 ---> 427
I've searched, but haven't really found anything. Anybody ever do it? I'm sure someone has..
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-2000 LS1 Z28-1979 Berlinetta*sold*-1992 RS 25th Anniv. 350*sold*-
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08-25-2005, 10:55 AM
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#2
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AF Regular
Join Date: Dec 2003
Location: Hialeah, Florida
Posts: 100
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I do it from time to time... why the curosity?
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08-25-2005, 11:04 AM
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#3
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Backstabbing AF Moderator
Join Date: Mar 2005
Location: Glen Ellyn, Illinois
Posts: 7,556
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Re: 305 ---> 427
Beavis: errr, umm, hey Butthead, she said do it!
Butthead: huh, huhhu, do it.
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08-25-2005, 11:07 AM
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#4
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Backstabbing AF Moderator
Join Date: Mar 2005
Location: Glen Ellyn, Illinois
Posts: 7,556
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Re: 305 ---> 427
On a serious note, there some folks over on TGO that have done some 383 swaps even one working on putting a 502 in a 3rd gen over there.
big problem I can see is losing the daily usage of it 'cause it probobly won't pass inspections where applicable.
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08-25-2005, 11:08 AM
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#5
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AF Enthusiast
Join Date: Jan 2005
Location: Dorchester, Massachusetts
Posts: 2,168
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Re: 305 ---> 427
Damn, throw that new LS7 (it's a 427 i believe) in there and you'll be all set. I don't know. How big of cubes has anyone put in a 3rd gen?
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87 IROC - R.I.P, and she will never be forgotten 
90 RS - The beginning of a new era... I hope.
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08-25-2005, 11:12 AM
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#6
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AF Regular
Join Date: Dec 2003
Location: Hialeah, Florida
Posts: 100
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However I charge quite a few bucks for the quality of the tune.
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08-25-2005, 11:14 AM
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#7
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AF Enthusiast
Join Date: Jul 2005
Location: Hamilton, New Jersey
Posts: 788
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Re: 305 ---> 427
Yeah I'd like to know how they did it. My friend's got a 427 in his '79, but that's a little different haha
__________________
-2000 LS1 Z28-1979 Berlinetta*sold*-1992 RS 25th Anniv. 350*sold*-
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08-25-2005, 11:16 AM
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#8
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AF Enthusiast
Join Date: Jan 2005
Location: Dorchester, Massachusetts
Posts: 2,168
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Re: 305 ---> 427
I figure the bay would be big enough to throw a bigblock in there, with some modifications. Would definitely need to beef up chassis and frame (samething, right?), i believe a motor that big would twist the car in two.
__________________
87 IROC - R.I.P, and she will never be forgotten
90 RS - The beginning of a new era... I hope.
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08-25-2005, 11:21 AM
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#9
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AF Enthusiast
Join Date: Jul 2005
Location: Orlando, Florida
Posts: 1,364
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Re: 305 ---> 427
More Power!!!!
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92 z28 camaro 5.7 TPI
current - slp intake runners and base-BBK 52mm throttle body-MSD 8.5mm wires, blaster coil, and 6AL Box-edelbrock headers-160 degree stat.-hotchkis strut tower brace
waiting in the garage - LQ4, milled heads 317 casting (10.5 to 1), hardened pushrods, ported LS6 oil pump, manley dual spings with titanium retainers, MTI X1 cam, hawks longtube headers
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08-25-2005, 11:23 AM
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#10
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AF Enthusiast
Join Date: Jan 2005
Location: Dorchester, Massachusetts
Posts: 2,168
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Re: 305 ---> 427
Yeah!!! What he said.
__________________
87 IROC - R.I.P, and she will never be forgotten
90 RS - The beginning of a new era... I hope.
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08-25-2005, 11:24 AM
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#11
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AF Enthusiast
Join Date: Aug 2004
Location: Trenton, New Jersey
Posts: 2,354
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Re: Re: 305 ---> 427
Quote:
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Originally Posted by Link85x
chassis and frame (samething, right?)
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yea, same thing.
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All Throttle, No Bottle!
Torque Makes You Go... FAST!
Horsepower Is For Braggin Rights.
Money talks, But all mine ever says is Goodbye
~Viper 
"twospirts" / "TS" - Definition: Obsolete
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08-25-2005, 12:22 PM
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#12
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AF Enthusiast
Join Date: Feb 2005
Location: New Berlin, Wisconsin
Posts: 642
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Re: Re: 305 ---> 427
Quote:
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Originally Posted by Link85x
I figure the bay would be big enough to throw a bigblock in there, with some modifications. Would definitely need to beef up chassis and frame (samething, right?), i believe a motor that big would twist the car in two.
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A buddy of mine swapped a 396 for the 305 in his '85 IROC. He didn't have sub-frame connectors at the time, and then he put in a 427 and added sfc's. After he ran it a few times it seemed to be tracking funny, and he found a huge crack in part of the rear sub-frame.
It could have happened while he ran the 396 without the sfc's but he doesn't think so.
You'd probably need a roll cage to stabilize the uni-body structure.
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08-25-2005, 01:39 PM
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#13
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Is eating.
Join Date: Feb 2005
Location: Richland Hills, Texas
Posts: 10,100
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Would need a new rear, probably transmission. New/better suspension too.. too big of a project, just go with like a 383 or an LS1.
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08-25-2005, 02:22 PM
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#14
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Banned
Join Date: Jan 2004
Location: Vancouver
Posts: 620
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Re: 305 ---> 427
Are you gonna run fuel injection or carb? Because it will screw your mlg comletely.Say 383 plus a double pumper,uh? Not worth it as an everyday driver even i there are tricks do emissions. Stick a turbo on it its better.
Anything will fit 454-572.
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08-25-2005, 02:24 PM
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#15
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AF Enthusiast
Join Date: Feb 2005
Location: New Berlin, Wisconsin
Posts: 642
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Re: 305 ---> 427
Quote:
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Originally Posted by Rally Sport 92
Would need a new rear, probably transmission. New/better suspension too.. too big of a project, just go with like a 383 or an LS1.
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Depends on how strong you build the 383, you might have the same problems.)
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