The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1969 - 1972 Blazers and Jimmys Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 02-07-2013, 09:09 AM   #1
JMac11
Registered User
 
JMac11's Avatar
 
Join Date: May 2005
Location: Tallahassee Fl
Posts: 773
Satisfaction with the LS swaps????

You guys that have made the swap into the Blazers, How are the results? I finally worked out from under an LT1 I had started and have picked up a low mileage 5.3. Plan on DBC, aftermarket harness, stock manifolds and using the factory mout compressor.
JMac11 is offline   Reply With Quote
Old 02-07-2013, 11:59 AM   #2
SamMargritz00
Registered User
 
SamMargritz00's Avatar
 
Join Date: May 2011
Location: Hershey, Nebraska
Posts: 319
Re: Satisfaction with the LS swaps????

Quote:
Originally Posted by JMac11 View Post
You guys that have made the swap into the Blazers, How are the results? I finally worked out from under an LT1 I had started and have picked up a low mileage 5.3. Plan on DBC, aftermarket harness, stock manifolds and using the factory mout compressor.
I love my LS swap. I wish the 5.3 had more power but it does well just cruising around. Someday I'll build it up. On a side note, I had to swap the stock truck manifolds out for a set of stock ones off of a camaro because the width was too wide for the frame. I sent the computer to a guy in South Dakota and had him delete the stuff I didn't need, made a custom harness that was pre-labeled, and had a performance tune on it.

Good luck with the swap!!
__________________
Blazer Build Thread: http://67-72chevytrucks.com/vboard/s...d.php?t=483399
SamMargritz00 is offline   Reply With Quote
Old 02-07-2013, 02:06 PM   #3
Firebirdjones
Registered User
 
Join Date: Oct 2009
Location: Prescott, Arizona
Posts: 2,396
Re: Satisfaction with the LS swaps????

Love mine, used a 6.0 and a 4L60E behind it. 3.73's with 33" tires and a custom SD tune. I get 22 mpg highway and 17 mpg city. Ran 14.40's at 95 mph. Plenty of power for a high centered 4x4
Firebirdjones is offline   Reply With Quote
Old 02-12-2013, 09:58 PM   #4
JMac11
Registered User
 
JMac11's Avatar
 
Join Date: May 2005
Location: Tallahassee Fl
Posts: 773
Re: Satisfaction with the LS swaps????

got the 5.3 (I hope) to the house, will check the crank this week end.... looking to keep it simple.
JMac11 is offline   Reply With Quote
Old 02-12-2013, 10:05 PM   #5
OldCreek
Registered User
 
OldCreek's Avatar
 
Join Date: Jan 2007
Location: Central Coast California
Posts: 1,026
Re: Satisfaction with the LS swaps????

Very happy here. However, I get nowhere near what FirebirdJones gets.... the last I checked I get 11mpg on average. But, that's with 4" lift, 35" tires and no top... I do have a bit of a heavy foot because it sounds and feels so good.
__________________
1972 K20 Suburban 5.7/700r4/NP205 Dana 44/H052 Sold
1972 C10 5.3L/4L60E 12bolt 5Lug - Sold
1971 K5 Blazer 6.0L LQ9 4L60E NP205 Dana 44/H052!!!
1970 K3500 1ton CrewCab 8.1L/Allison1000/NP205 Dana 60/14B!!!! - Sold
1984 K10 SWB 7.4L/4L80e/NP208 Corp 10/12 bolt Sold
1988 V30 CCLB 7.4L/TH400/NP205/Dana 60/Dana 70/3.73!!! (Sold)
2003 K2500HD 8.1/Allison1000/NP263
OldCreek is offline   Reply With Quote
Old 02-13-2013, 01:10 PM   #6
Firebirdjones
Registered User
 
Join Date: Oct 2009
Location: Prescott, Arizona
Posts: 2,396
Re: Satisfaction with the LS swaps????

Quote:
Originally Posted by OldCreek View Post
Very happy here. However, I get nowhere near what FirebirdJones gets.... the last I checked I get 11mpg on average. But, that's with 4" lift, 35" tires and no top... I do have a bit of a heavy foot because it sounds and feels so good.
Are you speaking of your K5? Because that's exactly what I did my swap in, a 72 K5 to be exact. I'm stock lift with 33's though.

How do you like your 8.1? I'm looking at buying a suburban (03-06 model) 3/4 ton with the 8.1 if I can find one with decent miles on it. I run a GM crate 502 in my 79 1 ton pickup, love the grunt.
Firebirdjones is offline   Reply With Quote
Old 02-15-2013, 03:00 PM   #7
OldCreek
Registered User
 
OldCreek's Avatar
 
Join Date: Jan 2007
Location: Central Coast California
Posts: 1,026
Re: Satisfaction with the LS swaps????

Yes, I'm referring to the K5...but I haven't checked my mileage in a year or so. Maybe its better.

The 8.1 is not yet running. My other two trucks are driveable. I'm getting close on the 8.1, though....
__________________
1972 K20 Suburban 5.7/700r4/NP205 Dana 44/H052 Sold
1972 C10 5.3L/4L60E 12bolt 5Lug - Sold
1971 K5 Blazer 6.0L LQ9 4L60E NP205 Dana 44/H052!!!
1970 K3500 1ton CrewCab 8.1L/Allison1000/NP205 Dana 60/14B!!!! - Sold
1984 K10 SWB 7.4L/4L80e/NP208 Corp 10/12 bolt Sold
1988 V30 CCLB 7.4L/TH400/NP205/Dana 60/Dana 70/3.73!!! (Sold)
2003 K2500HD 8.1/Allison1000/NP263
OldCreek is offline   Reply With Quote
Old 02-17-2013, 08:11 PM   #8
JMac11
Registered User
 
JMac11's Avatar
 
Join Date: May 2005
Location: Tallahassee Fl
Posts: 773
Re: Satisfaction with the LS swaps????

Checked the crank, a 5.3. Oil Pan area looked great........ Now to get the UPS guy busy
JMac11 is offline   Reply With Quote
Old 03-11-2013, 10:00 AM   #9
k1blazer
Registered User
 
k1blazer's Avatar
 
Join Date: Oct 2012
Location: Louisiana
Posts: 37
Re: Satisfaction with the LS swaps????

I'm late to this thread but what about the stock '72 transfer case. How did you fit it into the 4L60E?
Posted via Mobile Device
k1blazer is offline   Reply With Quote
Old 03-11-2013, 10:37 AM   #10
JMac11
Registered User
 
JMac11's Avatar
 
Join Date: May 2005
Location: Tallahassee Fl
Posts: 773
Re: Satisfaction with the LS swaps????

I am keeping the 700r4 I had just put in it when the 350 went down...... maybe one of the other guys will chime in......

Ordering stuff this week, next week in Destin then time to go to work....
JMac11 is offline   Reply With Quote
Old 03-11-2013, 10:51 AM   #11
k1blazer
Registered User
 
k1blazer's Avatar
 
Join Date: Oct 2012
Location: Louisiana
Posts: 37
Re: Satisfaction with the LS swaps????

Thanks JMac!! I'll be watching the thread.
Posted via Mobile Device
k1blazer is offline   Reply With Quote
Old 03-11-2013, 02:09 PM   #12
Firebirdjones
Registered User
 
Join Date: Oct 2009
Location: Prescott, Arizona
Posts: 2,396
Re: Satisfaction with the LS swaps????

Quote:
Originally Posted by k1blazer View Post
I'm late to this thread but what about the stock '72 transfer case. How did you fit it into the 4L60E?
Posted via Mobile Device
Advance Adapters makes everything you need to make it happen.
Firebirdjones is offline   Reply With Quote
Old 03-11-2013, 02:11 PM   #13
k1blazer
Registered User
 
k1blazer's Avatar
 
Join Date: Oct 2012
Location: Louisiana
Posts: 37
Re: Satisfaction with the LS swaps????

That's awesome!!! Thanks!
Posted via Mobile Device
k1blazer is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 06:59 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com