Have any boardmembers swapped in a 5.3?

[longorange68]

I'm looking to talk to someone who has completed a 5.3/4L60E swap in a 2WD. Can anybody help me out? Thanks again,

Josh

[KevsClassics]

Member jmuck put one in his Blazer

[killer71]

been there, done that...http://67-72chevytrucks.com/vboard/s...d.php?t=244448

[jmuck]

I have actually done a few of these. What do you want to know?

[killer71]

and here's another...http://67-72chevytrucks.com/vboard/s...d.php?t=195643

[longorange68]

Just looking for some advice right now. I have just got all my money set aside, and I am looking to gather parts in preparation for the swap. I have a 250 I-6/SM465 combo now, and am looking forward to not having to shift.

Here are my Q's

-Who did your harness and ECU work? Where did you end up putting the ECU? (This one is important to me, I live south of Seattle and all it does is rain...)
-Where did you get your motor mounts?
-Do you recommend any particular headers?

Knowing what you know now, is there anything you would do differently if you had to do it over again?

[Sicmaro]

link in sig....... \/

[jmuck]

Originally Posted by longorange68

Just looking for some advice right now. I have just got all my money set aside, and I am looking to gather parts in preparation for the swap. I have a 250 I-6/SM465 combo now, and am looking forward to not having to shift.

Here are my Q's

-Who did your harness and ECU work? Where did you end up putting the ECU? (This one is important to me, I live south of Seattle and all it does is rain...)
-Where did you get your motor mounts?
-Do you recommend any particular headers?

Knowing what you know now, is there anything you would do differently if you had to do it over again?

I have used a couple of different wiring harnesses but I would suggest painless. Street & Performance makes a real nice harness but it is more expensive. I sent my ecu to pcm4less.com and they did my computer work for $250.00 and if you would like to make any changes it will only cost you $50.00. They usually send out the new pcm that day and you just send yours in for the core charge. I put my PCM/ECU in the glove box (see pic) It is behind the fuse block. For my ls1 swap I used motor mounts from street & performance b/c they were the only ones that made them then but on my blazer I used summit racings motor mounts. They are basically the same but S&P's are aluminum and 2x$$$. Summits are steel and around $50.00. Will not be able to run factory a/c unless you use some custom weld in motor mounts or buy a different pulley system(very expensive). Again street and performance make a very good header for an LS motor but over $500.00 and summit sells hooker shorty headers for $209.95 & ceramic coating for $389.95. The S&P are made of bigger pipe and flow better but they cost alot more.
I would definately reccomend this swap it is awesome to just turn the key and a 72 start up like a new truck. No choking or giving it gas before it starts.
GOOD LUCK!

[Ackattack]

Originally Posted by longorange68

Just looking for some advice right now. I have just got all my money set aside, and I am looking to gather parts in preparation for the swap. I have a 250 I-6/SM465 combo now, and am looking forward to not having to shift.

Here are my Q's

-Who did your harness and ECU work? Where did you end up putting the ECU? (This one is important to me, I live south of Seattle and all it does is rain...)
-Where did you get your motor mounts?
-Do you recommend any particular headers?

Knowing what you know now, is there anything you would do differently if you had to do it over again?

For $500 you can buy your own copy of HPtuner and do all the tuning yourself (plus 3 other engines)

I got some tubular motor mounts for a 73+ and then made adapter plates to mount up to the block.

I used some stainless steel camaro headers i found on ebay.

[ap2002]

can someone send me the link for the motor mounts from summit? i am also getting ready to do my 5.3 L33 aluminum swap...

by the way i come for a forum where it is 99+trucks, I have found a guy that does the whole wiring harness and programs your ECM for $300, but you have to supply a factory wiring harness and ecm, which a wiring harness you can get at a salvage yard for $50-100?

just giving yall an heads up,

here is the guys info.... www.wait4meperformance.com

[jmuck]

Here are the motor mounts I used on my blazer from Summit.
http://store.summitracing.com/partde...5&autoview=sku

[longorange68]

http://www.classicperform.com/Store/...cks/CPLS1K.htm

Do you think that this one would work for the swap? The link to Summit shows a piece of flat stock, but no mounts.

Is this a good deal? http://www.painlessperformance.com/ECMProgram/login.php

Also, going from a manual pedal setup in my 68 to an automatic, any problems I need to be aware of there, or do I just get rid of the clutch pedal?

[Kid]

Originally Posted by longorange68

Just looking for some advice right now. I have just got all my money set aside, and I am looking to gather parts in preparation for the swap. I have a 250 I-6/SM465 combo now, and am looking forward to not having to shift.

Here are my Q's

-Who did your harness and ECU work? Where did you end up putting the ECU? (This one is important to me, I live south of Seattle and all it does is rain...)
-Where did you get your motor mounts?
-Do you recommend any particular headers?

Knowing what you know now, is there anything you would do differently if you had to do it over again?

Another option you could compare is Speartech. I had "Speartech" build a custom harness to my exact requirements for $850.00. All new hi temp wire with hi temp. wire loom & heat shield where required. Real quality! I put the ECU under the seat, then measured the distance & they made a new harness to my measurements. They also reworked the ECU. It was plug & play, running in 20 minutes after opening the box. (body off the chassis at the time). John at Speartech is willing to answer questions after the sale also.
As for Painless, they wont build a custom length harness.

I built the motor mounts after positioning the motor where I wanted it, so I can't help ya there.

Stock LS1 manifolds from a 98 camaro cost alot less than headers (40.00 to 50.00) & are nice & quiet.
Go to LS1tech.com for alot of good info. on the LSX motors.

[jmuck]

The motor mounts at classic performance are the same plate summit has. They just include motormounts with them. I don't know how much they cost but you can get motor mounts at NAPA or Oriellys pretty cheap. So they will work. As for the painless wiring harness with the free ECM flash that is a good deal.

[jkade]

You won't beat
www.wait4meperformance.com for a computer or the tune. I think he only charges around $150 for the computer and the custom tune. The guys name is Jesse and he knows his stuff.