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Old 08-25-2005, 10:49 AM
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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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Old 08-25-2005, 10:55 AM
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I do it from time to time... why the curosity?
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Old 08-25-2005, 11:04 AM
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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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Old 08-25-2005, 11:07 AM
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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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Old 08-25-2005, 11:08 AM
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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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Old 08-25-2005, 11:12 AM
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However I charge quite a few bucks for the quality of the tune.
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Old 08-25-2005, 11:14 AM
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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
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Old 08-25-2005, 11:16 AM
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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.
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Old 08-25-2005, 11:21 AM
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Re: 305 ---> 427

More Power!!!!
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Old 08-25-2005, 11:23 AM
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Re: 305 ---> 427

Yeah!!! What he said.
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Old 08-25-2005, 11:24 AM
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Re: Re: 305 ---> 427

Quote:
Originally Posted by Link85x
chassis and frame (samething, right?)
yea, same thing.
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Old 08-25-2005, 12:22 PM
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Re: Re: 305 ---> 427

Quote:
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.
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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Old 08-25-2005, 01:39 PM
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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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Old 08-25-2005, 02:22 PM
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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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Old 08-25-2005, 02:24 PM
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Re: 305 ---> 427

Quote:
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.
Depends on how strong you build the 383, you might have the same problems.)
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