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Old 08-05-2009, 12:20 AM   #1
1moretoy
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Unhappy ls1 swap clearance problems help

i have a 70 short step and trying to swap in a 01 ls1 f body motor using s&p motor plates and the stock sbc rubber mounts,and im having some clearance problems. first, the point on the s&p plate hits the ac comp brkt. so i had to take that off just so i could mount the plate to the block. second, the oil pan hits the crossmember and i only need to move the motor back about an 1" to 1.5" to clear it. can i unbolt the factory perch's wich are mounted in the front holes, move them back and drill new holes?any issues doing that, if i do that will my nice new thorley headders still work? thanks in advance.
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Old 08-05-2009, 01:35 AM   #2
BAGNDRAGIT
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Re: ls1 swap clearance problems help

i dont see why not....someone will chime in who has done it...
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Old 08-05-2009, 01:46 AM   #3
slosteve
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Re: ls1 swap clearance problems help

Check out the Post "Time to ask the experts" by Mikeys68. It might answer 1 of your questions.
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Old 08-05-2009, 08:28 AM   #4
1moretoy
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Re: ls1 swap clearance problems help

thanks any 1 else
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Old 08-05-2009, 11:55 AM   #5
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Re: ls1 swap clearance problems help

Which mounts/plates did you get from them?
I am using the trans dapt plates with stock stands and Poly bushings and everything clears just fine. I would guess you need the other style plates they have.
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Old 08-05-2009, 01:21 PM   #6
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Re: ls1 swap clearance problems help

sorry to hi-jack the thread, but what is the part # for the those trans dapt plates shon? and 1moretoy if you cant find a good answer on here (which i know i've read about this somewhere on here.) try either searching for ls1's in a thread or try ls1tech.com
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Old 08-05-2009, 01:28 PM   #7
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Re: ls1 swap clearance problems help

4572
$60 shipped from Herron Performance
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Old 08-05-2009, 01:56 PM   #8
Rogue Willie
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Re: ls1 swap clearance problems help

That is about the same setup I have. I slid the motor back and redrilled the holes. My Thorley headers fit fine. Haven't fired it up yet.
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