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Old August 13th, 2009, 10:50 PM   #41
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Lope of the cam? Did you do head work? On the motor .
Straight 317 aluminum heads.


Lope is what the engine does; with the GMPP "Hot Cam" it has a fairly lumpy idle. Comp Cams has their "Thumper" series with a similar profile. Are you thinking of cam lobes?
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Old August 13th, 2009, 10:57 PM   #42
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No I ve heard some people had to do head work in order to run a cam. upgraded valves and such. Just woundering if it was neccesary or not. What would be a good price for a complete drive line, I've found low mileage 5.3l for 3000.00. But as poste befor I don't want to be disappionted with the power.
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Old August 14th, 2009, 08:10 AM   #43
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No I ve heard some people had to do head work in order to run a cam. upgraded valves and such. Just woundering if it was neccesary or not. What would be a good price for a complete drive line, I've found low mileage 5.3l for 3000.00. But as poste befor I don't want to be disappionted with the power.
valve springs are usually only the required upgrade for a cam because of the higher lift and faster acceleration rates of the valvetrain with the bigger lobes needs more spring to keep it under control. I went with hollow stem sodium something filled valves and .080" wall chromoly push rods to help stiffen my valvetrain up in addition to the springs.

you will only be disappointed with the power if you want a race car. a 5.3L isnt going to pull like a modded diesel, it will move around just fine and on the top end it'll suprize you. a 6.0L can be modded for a couple grand and make your jeep run 120 mph in the quarter mile and to some that's too much power and others that's just right.

you have to find out what you want out of it and tehn make that decision on your own... maybe go for a ride with some people before you make your final decision.

for 3k I'd go with the 6.0L. for 1500 I'd do a 5.3L
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Old August 14th, 2009, 08:49 AM   #44
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I paid $2600 at Schramm's for my 6.0. I heard of someone getting a 5.3+trans+t-case from them for $1600 but it sounds way too low to me.

I had no problem fitting my intake under my jeep hood. I used basically the same motor mount locations as the 2 previous SBC's that were in the jeep but I did have to change the design. This put the stock pan too deep. Sure, it looks good for general clearance but I have scraped my low profile corvette pan on rocks. It basically sits parallel to the trans pan. Both are now covered by a skid plate. Haggar, my C6 pan is basically the same as what was in the GTO.

I had Jim's performance do my wiring harness and reprogram the ECM. While doing that, I had him remove the speed sensor. I didn't care. Now, there is a possible down side to that. There are times where I drop from throttle down to idle really fast and it occasionally stalls. (maybe once per 8 hour day of wheeling) Jim tells me that is because there is no speed sensor and the computer can't monitor a relationship between rpm and speed. Never really been a problem though.

I have dual 2 1/2" exhaust all the way back. Not 2 into one. I didn't want to have to screw with a crossover when pulling trans or t-case.
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Old August 14th, 2009, 08:58 AM   #45
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Dang, this thread got good!!!!

Anyways, give weller truck parts in Grand Rapids a call, they sell complete sets for decent prices. I think they were 1500 for a 5.3 complete. Never priced a 6.0 from them as I am to cheap to pay for the 5.3. I went the part my own vehicle route (bought totaled truck and now parting it out), works for me.

I am going 5.3, unless I find a 6.0 to part out. I enjoy playing in the sand and hp is the fun part there. If no 6.0 comes along I will run a 5.3 till I find one, then put the 5.3 in something else or sell it, no big deal.
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Old August 14th, 2009, 09:12 AM   #46
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Haggar, my C6 pan is basically the same as what was in the GTO.
GTO is a front sump pan, basically a mirror image of the C6 pan front to rear but deeper. the F-body pan is the closest one to a C6 and it's about 1.5" deeper but a similar profile.
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Old August 14th, 2009, 09:21 AM   #47
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Just finished up one in my brother in-laws cj. I wasn't the main builder on it but after seeing it perform I would definitely not run the 3/4 ton trans. That trans makes the thing a dog off the line. We are going to be doing some programming to see about getting the trans to stay in 1st when you lock it down. Once you get rolling there is tons of power. He runs 4:56 and 35's. For the oil pan we just cut a notch and made a new corner for the drive shaft clearance.
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Old August 14th, 2009, 09:29 AM   #48
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What trans is it? 4L80, 4L85? pretty sure first gear ratios are the same as the 4L60's so it's either the converter or torque management that you're noticing.
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Old August 14th, 2009, 09:40 AM   #49
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I'm guessing it's the torque management.
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Old August 14th, 2009, 09:42 AM   #50
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I'm guessing it's the torque management.
Yeah, Its it as much as 50% reduction in torque off the line?

I believe they used a 4L80e on that one.
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Old August 14th, 2009, 10:41 AM   #51
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Awsome...man I love this forum. Hey Tomh you never answered about the headers.

Whiterino, did that price include the trans, harness, ecm, and all the accessories? If so I'm makin' a phone call on Monday

95geo I to like to run the dunes as you can see in my avatar I'm a windage and ellevation kind of guy, So I want power, don't get me wrong I like to crawl but there is somthin about the dunes that makes you want to go fast, plus all my buddies run V8 's and like two race. I think that a LQ9 with a good tune and maybe a 100 shot of the go juice would realy surprise them.

Last edited by somer1; August 14th, 2009 at 10:50 AM.
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Old August 14th, 2009, 11:18 AM   #52
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Pretty simular to what I am thinking. Custom ecm tune (probably black bear performance?) and some nos (should be able to throw 100-150 at it). Only bad thing about nos is you can't have to much timing and use it??
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Old August 14th, 2009, 11:49 AM   #53
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Awsome...man I love this forum. Hey Tomh you never answered about the headers.
The headers are the "Slick Fits" from Advance Adapters. I added the 02 bungs, flanges and then sent them over to Jet Hot for coating.
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Old August 14th, 2009, 12:03 PM   #54
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Depths of Different Oil Pans
LS7 – dry sump - 4.5”

Bat-wing Vette – 4.75” (C5 corvette (with LS1)

Corvette – 5” (non bat-wing)

Camaro/Firebird – 5.5”

GTO – front sump – 6”

Cadillac CTS-V – 6.75”

Hummer H3 5.3L – 7.5”

Truck 8.25”
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Old August 14th, 2009, 12:42 PM   #55
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http://ls1tech.com/forums/conversion...-oil-pans.html
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Old August 14th, 2009, 01:02 PM   #56
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Old August 14th, 2009, 01:05 PM   #57
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If you want to see what the 6.0 is capapble of......

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Old August 14th, 2009, 01:49 PM   #58
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Old August 14th, 2009, 01:56 PM   #59
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must be the rollcage?
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Old August 14th, 2009, 02:00 PM   #60
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Yeah.... and the gears.... and the ....... he didn't hit the nitrous with any of this either..... there's a bunch more when he really wants to go fast......
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