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08-28-2010, 03:40 PM | #1 |
Junior Member
Join Date: Nov 2006
Location: Brandon, MS
Posts: 134
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Need LS1 Help
I am trying to fit a 1999 LS1 350 with 4L60E into a '72 short frame. This engine came from a Pontiac. I have interference with the frame and the A/C compressor. (The compressor is mounted low on the passenger's side.)
I have another 350 - not LS1 - with a factory serpentine system from about 1993. The A/C compressor on this engine is also on the passenger's side but it is mounted high. There is no interference with this engine. My question is: Will the older serpentine system bolt to the newer LS1? That may be a dumb question, but I've asked dumb questions before. Any input is appreciated. |
08-28-2010, 04:50 PM | #2 |
Registered User
Join Date: Mar 2009
Location: Stockton California
Posts: 42
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Re: Need LS1 Help
I would get CPP motor mounts, I have not done it but have looked up some great info from great guys on this site. I want to swap my 70's engine for a LS1 as well, I am doing a frame off kind of, lol so this would be a gould time for me to do the swap... Ohh back to the topick I also remeber that same post or another saying you can cut a V in your frame so your AC would clear, or you could buy some after market bracket that would put your ac comp on top, thanks !
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08-28-2010, 09:51 PM | #3 |
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Join Date: Jul 2005
Location: Saint Simons Island,Georgia
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Re: Need LS1 Help
http://67-72chevytrucks.com/vboard/f...play.php?f=206
don't forget to search in the Lsx section... LOTS of info over there!
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Harrol 1968 SWB 1968 SWB 4x4 1969 Suburban 1970 LWB 1970 Blazer 2002 Tahoe Inside every older person is a younger person wondering what happened |
08-28-2010, 10:00 PM | #4 | |
Senior Member
Join Date: May 2009
Location: Fort Worth, TX
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Re: Need LS1 Help
Quote:
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08-28-2010, 10:52 PM | #5 |
Old Skool Club
Join Date: Jun 2001
Location: Benton, AR "The Heart of Arkansas"
Posts: 10,880
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Re: Need LS1 Help
Check out www.hotrodlane.cc (Street and Performance) in Mena, AR. One of their projects was an LS into a 67-72.
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Member Nr. 2770 '96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed. '69 C-10 SWB; 350/TH400 - in limbo The older I get, the better I was. |
08-29-2010, 12:58 PM | #6 |
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Join Date: Aug 2010
Location: Alta Loma, CA
Posts: 610
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Re: Need LS1 Help
I am afraid that I am going to have the same issue with my 5.3. I will find out soon when I drop it in the frame. I had to notch my S10 frame when I put an LT1 in it, so I will probably just do the same thing.
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08-29-2010, 02:03 PM | #7 |
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Location: Pensacola, FL
Posts: 17,858
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Re: Need LS1 Help
I used ECE motor mounts and did not have to cut the frame. You can see pictures in my crewcab or sububan build thread.
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Rob - https://www.instagram.com/hart_rod_c10 As Iron Sharpens Iron, So One Man Sharpens Another. Proverbs 27:17 FOR SALE: DBW pedal bracket - http://67-72chevytrucks.com/vboard/s...d.php?t=651123 FOR SALE: Hood Brackets http://67-72chevytrucks.com/vboard/s...d.php?t=679945 1987 Silverado SWB - 34.5K original miles http://67-72chevytrucks.com/vboard/s...d.php?t=801834 1969 SuperBurb - http://67-72chevytrucks.com/vboard/s...d.php?t=200387 1968 Farm truck - http://67-72chevytrucks.com/vboard/s...d.php?t=358692 1968 SWB - http://67-72chevytrucks.com/vboard/s...d.php?t=551258 1948 Chevy - http://67-72chevytrucks.com/vboard/s...=122164&page=3 |
08-29-2010, 02:28 PM | #8 |
Parts and more parts
Join Date: Nov 2003
Location: Lebo, Kansas (middle of nowhere
Posts: 6,821
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Re: Need LS1 Help
The Gen III and IV motors that have the alternator and A/C mounted low is not a real issue. You can purchase aftermarket stuff to move them out of the way. The attached pictures if of the first truck that Street and Performance created. This is the platform that they used to make their headers and brackets for the support items. This install was in a 1968 Chevy C-10.
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Frank Last edited by piecesparts; 08-29-2010 at 02:29 PM. |
08-30-2010, 02:42 AM | #9 |
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Join Date: Sep 2009
Location: Houston, Texas
Posts: 7
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Re: Need LS1 Help
I am in the final throws of an ls1 swap in my '72. I am setting on CPP tubular mounts with the vette ls1. My compressor was well into the frame. I am running Vintage Air and needed to use the Sanden compressor so I went with one of the Kwik Performance setups. It is well made and fits great.
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08-31-2010, 12:22 PM | #10 |
Junior Member
Join Date: Nov 2006
Location: Brandon, MS
Posts: 134
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Re: Need LS1 Help
Thanks for the input. I decided not to cut the frame and ordered the relocation parts from Kwik Performance. I am hoping I can use the regular motor mounts now.
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08-31-2010, 03:01 PM | #11 |
1965 Chevy C10, 2005 4.8L/4l60
Join Date: Aug 2004
Location: DFW Texas
Posts: 8,546
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Re: Need LS1 Help
Kwikperformance sells a high mount Sanden ac compressor mount
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08-31-2010, 04:40 PM | #12 |
Junior Member
Join Date: Nov 2006
Location: Brandon, MS
Posts: 134
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Re: Need LS1 Help
Thanks, I ordered one a few minutes ago and already have an email saying it shipped! Fast service. I'm thinking I should also get the power sterring and alternator mounts too.
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08-31-2010, 04:45 PM | #13 |
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Join Date: Sep 2009
Location: Houston, Texas
Posts: 7
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Re: Need LS1 Help
I don't know what you started with, (f-body?), but, other than the AC compressor, I am using all of the stock vette acessory setup. The AC mount and compressor almost mirror the alternator's position. I did have to get a belt that was 2" longer than they recommended.
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08-31-2010, 07:21 PM | #14 |
Next project: 1970 K10
Join Date: Feb 2004
Location: Fort Collins, Colo 80524
Posts: 6,684
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Re: Need LS1 Help
A pair of $20 manifolds would have solved the problem (no notching required with them), unless your compressor was physically hitting the frame. Member "68 short step" has put a couple LS engines into the 67-72 frames and used the adapter manifolds with no notching required.
I used 5/16" adapter plates and kept the LS compressor using the adapter manifolds. One of each: http://www.docsblocks.com/search.asp...=&stype=&scat=
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08-31-2010, 11:27 PM | #15 |
Junior Member
Join Date: Nov 2006
Location: Brandon, MS
Posts: 134
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Re: Need LS1 Help
I started with a "F" body engine and the compressor actually hit the frame destroying the wiring plug for the compressor clutch.
Thanks for all the input. It helps a lot. Oh, and I noticed the manifolds were labeled for 5.3L, mine is a 5.7L (or at least that's what I bought it for). That might make a difference????? Last edited by Roland; 08-31-2010 at 11:29 PM. |
09-01-2010, 10:52 PM | #16 |
Senior Member
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Location: Greenville, SC
Posts: 873
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Re: Need LS1 Help
I got my low mount LS2 AC compressor bolted in last night after great amounts of swearing (65 short fleet). I had to cut an access hole in the bottom of the cross member to tighten the lower rear mounting bolt. I will probably have some frame interference with the block.
TR
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1965 C10 SWB Fleet Two owner LS2 Swap Thread http://67-72chevytrucks.com/vboard/s...d.php?t=413880 |
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