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12-08-2013, 07:25 PM
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#1 |
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Registered User
Join Date: Oct 2013
Location: Dresden, Ontario
Posts: 647
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LS Engine location
Put the 5.3 in the truck today to check fitment / location then set the cab back on to see what I had for clearance. Looks pretty good where i got it now. I want to keep it back as far as possible. I still have to machine up the SBC to LS adapters for the mounts but this gives me a good idea what I need for mounts. Here are the pics what don you think?
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1970 Short Wide 5.3 4L60E BlackBear tune 3:73 gears, Boyd's Tank 2.5 / 4 drop 5 lug disc brakes Vintage Air 18x8 Ridlers 255/55 frt. 18x9.5 275/60 rear |
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12-08-2013, 07:29 PM
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#2 |
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Registered User
Join Date: Oct 2013
Location: Dresden, Ontario
Posts: 647
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Re: LS Engine location
I got the POL Motor mounts and CPP Trans crossmember from Blazerboy72 on here and he included the SBC mounts so I just need to fab up an LS adapter.
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1970 Short Wide 5.3 4L60E BlackBear tune 3:73 gears, Boyd's Tank 2.5 / 4 drop 5 lug disc brakes Vintage Air 18x8 Ridlers 255/55 frt. 18x9.5 275/60 rear |
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12-08-2013, 07:34 PM
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#3 |
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Registered User
Join Date: Oct 2013
Location: Dresden, Ontario
Posts: 647
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Re: LS Engine location
More pics.
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1970 Short Wide 5.3 4L60E BlackBear tune 3:73 gears, Boyd's Tank 2.5 / 4 drop 5 lug disc brakes Vintage Air 18x8 Ridlers 255/55 frt. 18x9.5 275/60 rear |
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12-09-2013, 01:16 AM
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#4 |
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the boat guy
Join Date: Jul 2007
Location: springfield mo
Posts: 2,339
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Re: LS Engine location
Looks pretty close to the position of my 5.3
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67, swb, fleet, tach, throttle, 5.3, 4l60e, 3.73's, fuel cell, 5 lug, p.d.b., 4-6 drop. great little truck 66, stevens drag/ski 18' silouette, 350, 2.02 doublehump heads. comp extreme marine 278 cam, vette 7 fin valve covers, old polished edelbrock intake, velvetdrive, casale v-drive, adj cavitation plate. 28, model a rpu project, |
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12-09-2013, 09:25 AM
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#5 |
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Registered User
Join Date: Mar 2005
Location: 10-Uh-See
Posts: 5,609
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Re: LS Engine location
That's exactly how mine is positioned with the same POL stands.
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12-10-2013, 12:31 AM
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#6 |
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Registered User
Join Date: Mar 2013
Location: Marquette michigan
Posts: 828
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Re: LS Engine location
Hi Kennuck, If you plan to use the factory ac compressor (as i am going to do) you may run into clearance issues between compressor and mounts using aftermarket brackets,etc. The way i did mine probably isn't the most popular here but this is my take on it: i didn't want to use 40 year old mounts that may separate and allow the motor to move around, i wanted to use newer technology mounts that address noise , vibration, harshness, etc, so i used the organ donor (2001 5.3) and made my own perches from 1/4" plate. Removed all the old frame brackets and started from scratch. By using the 2001 mounts my perches don't hit the a/c compressor, my mounts don't interfere with my headers like fancy tubular mount brackets do. I didn't want to use 73 and newer poly mounts as i've heard that they are rock hard. Does late model gm trucks with 4.8,5.3,6.0 have motor mount issues like rock hard, or separate? Not that i know of. If i was to do it over again i would consider trailblazer/ss mounts that look like hockey puck biscuits. Use the factory cast iron brackets to engine and fab it to the crossmember. Oh also the trailblazer a/c compressor fittings are inline front to back. Some guys use a different compressor and notch the frame for one line. I can't bring myself to do that when the trailblazer has everything i need. Good luck, Brian F.
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