305to350 swap - Chevy Impala SS Forum
 
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post #1 of 7 (permalink) Old 12-06-2001, 01:33 AM
nSS 9C1
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Hey everyone,

I am wanting to swap out my stock 305LTZ to a 350LT1, is it a simple swap just basically bolt in no problems? Or must all the wiring and computer be changed? Any information/swap giides would be much appreciated. Thanks.. ~nss9c1
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post #2 of 7 (permalink) Old 12-07-2001, 10:57 PM
94LT1
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you need the whole wiring harness & PCM out of the donor car, plus electronic trans.......it cant be easy
post #3 of 7 (permalink) Old 12-09-2001, 01:19 AM
BBODYLTZN
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dont you mean L03 not LTZ right? [img]6.gif[/img]
 
post #4 of 7 (permalink) Old 12-09-2001, 12:49 PM
LT1Kicker
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I've heard of people trying it, and usually not doing well. It is very expensive and time consuming. You will need an LT1 motor of course, a 4L60E trans(yours is only a 4L60), a Painless wiring harness, and of course all the fuel injection, etc. I would upgrade to an L05 350, good engine, I installed a new one in my 92.
post #5 of 7 (permalink) Old 12-09-2001, 01:40 PM
AdioSS
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If you've got the money for an LT1, I saw screw that! Go with a Ram Jet 383 [img]smile.gif[/img] More power with proven technology and no Opti-Spark problems.
post #6 of 7 (permalink) Old 12-12-2001, 12:05 AM
nSS 9C1
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Thanks for the help.. I am not all that mechanically stable.. (learning) so you figure go 383.. rather than 350lt1.. by the sounds of it a lt1 is just a pain.

And where could I find a L05 350? what cars came with them? and will the L05 work with my stock wiring/computer? [img].gif[/img]
post #7 of 7 (permalink) Old 12-14-2001, 05:43 PM
AdioSS
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The L05 was an option on the 91-93 B-bodies, but you already knew that, right [img]smile.gif[/img] It was also available in the full-size truck, but they didn't get roller lifters. Just flat tappet hydralics. However, the block was machined for the roller lifters so that shouldn't be too big of a deal to adapt.

Try to grab the computer and TBI from the vehicle you get the 350 from. Otherwise, you'll need bigger injectors and custom programming.
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