5.3 + obs = good times

[mroelike1985]

Hello guys, i've been lurking around these forums and finally registered.
I have an '89 reg. cab stepside that I'm going to flop (little more complex than that I know) this 5.3 into.
I know there is a template for the adapter mounts somewhere on this site, but i haven't been able to find it.
If someone could link me that would be great.
The harness will be sent off to speartech I imagine. Is it as simple as splicing in four wires as I have read?
I don't mind a little wiring, but i don't know about a total rewiring.
The PCM also needs the VATS disabled to my understanding. what is the cheapest route on that (speartech?)
I will be going without the A/C for a while as i'm not going to notch the frame.
I know I should be going with the 5.7 or 6.0, but after having driven my father's '04 CC with a 5.3 I won't complain.

hopefully obs = old body style
just assumed that by reading it in context

[RedHeartbeat]

Well, now that we've made an honest person out of you... http://www.ls1truck.com/jeff/template.jpg for the motor mounts.

[mroelike1985]

Thanks for the link. Won't I have to weld some additional brackets to those adapters for them to bolt to the old mounts?

Anyone have any intimate knowledge of Speartech and their "signature 4 wire setup" i keep reading about?

[kwkenuf]

<div class='quotetop'>QUOTE(MroeLike &#064; Mar 27 2006, 05&#58;17 PM) [snapback]48448[/snapback]</div>

Thanks for the link. Won&#39;t I have to weld some additional brackets to those adapters for them to bolt to the old mounts?
[/b]

No, those adapter brackets bolt to your LSx block and give you a traditonal small block chevy (Gen 1/2) bolt pattern to which you then attach your old mounts.

[Tim Z]

welcome&#33; I had speartech streamline a harness for a swap i did 2 years ago(97 LT1 into a 86 IROC Z camaro) and he did a great job. The 4 wires to hook up if i remember correctly were fuel pump relay, power ground and i think accesory power, but i cant rember. My next harness im going to get will be from NELSON PERFORMANCE, (5.3 into 95 S-10 Zr-2) He knows his stuff and his service is great too.

[mroelike1985]

Alright thanks. I guess I was just kinda going by pics that I have seen. Sometimes I can&#39;t really make out what I&#39;m looking at.

[rubrhammer]

<div class='quotetop'>QUOTE(MroeLike &#064; Mar 28 2006, 12&#58;42 AM) [snapback]48480[/snapback]</div>

Alright thanks. I guess I was just kinda going by pics that I have seen. Sometimes I can&#39;t really make out what I&#39;m looking at.
[/b]

Thanks for posting the link. One question though, what diameter are the holes?

[RedHeartbeat]

<div class='quotetop'>QUOTE(rubrhammer &#064; Mar 28 2006, 08&#58;16 PM) [snapback]48577[/snapback]</div>

Thanks for posting the link. One question though, what diameter are the holes?
[/b]

Hell, I can&#39;t remember, just drill them 1/32 larger than the bolts in the block. I think they&#39;re 8mm or close to 5/16 but they may be 10mm or 13/32 for clearance. Just measure them.

[mroelike1985]

Thanks for the comments guys...i need to start making it a routine to check my threads. I&#39;ll try to post some pics of the truck. I&#39;ll check into how to do that(host pics) pretty soon. There is this street scene air dam that, when mated to a smoothie bumper, looks sick. I don&#39;t who makes it, but i will try to get a pic of a truck with that as well. It will prolly be a week or so before we rip the 350tbi out(prolly gonna use a bobcat for that hahaha). I&#39;ll try to keep you posted.