5.3L owners inside.
yah, im wondering if the stock truck intake manifold will fit under my hood....what do you think since you know what it would look like/ how it would sit....im basically just trying to picture everything visually that I have never seen before...
I got mine (4.8) in a rolling chassis for 600 bucks. sold some of the stuff off the truck and basically have zero dollars in the drivetrain/electronics/interior. see the link in my sig.
even with a car, this gets whatever vehicle you have ready for an ls1. run the "worthless" truck motor for awhile and piece together the engine that YOU want. For my conversion, i needed all the truck stuff anyhow, so getting what I did made it that much easier.
even with a car, this gets whatever vehicle you have ready for an ls1. run the "worthless" truck motor for awhile and piece together the engine that YOU want. For my conversion, i needed all the truck stuff anyhow, so getting what I did made it that much easier.
The iron blocks are better for FI applications.
Kidcamaro - I did another check tonight on that intake and theres no way its going to work without serious modifications. The upper intake peice hits off the cowling. Ill take a picture later, i checked it when i got off the bus from school.
Sheldon
Sheldon
I got a 5.3L complete for $500. Threw 15lbs of boost at it and its holding up fine. What is 21 cubic inches?? .....nothing! Im making over 600rwhp with it. Still a stock shortblock too. Not to mention its iron and stronger.
LS1 is just a hyped up name that cost about $2000 more than it should. 5.3 has plenty of potential.
LS1 is just a hyped up name that cost about $2000 more than it should. 5.3 has plenty of potential.
Last edited by 5.3 racer; Mar 7, 2008 at 04:33 PM.
5.3 swap I have done the swap with the six speed. There is a ground that has to be moved on the pass side, real simple, A bolt on the alt bracket that has no hole. The only thing the bolt was good for was to hold the bracket in place with the alt removed. I drilled and tapped the outer upper hole. It has the flat boss there it just dosent have a hole, atleast not on the 2004 5.3. The flywheel works perfect alone with the pilot bushing. The oil pan along with the pickup and windage tray is a easy swap. The Intake and all the accessories swap off of the 5.7. The valve covers need to be swaped to match the pcv system. With the 5.7 tune it only lost a 10th in the eighth. I am boring a 5.3 now to a 5.7. Want be putting any spray or boost on it. Just a cheep way to get a 5.7 in a PU. The motor does not seem to have as much noise as the aluminum block does.
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I just finished my 90 Mustang coupe with a 5.3/4L60E and am very pleased with the power per dollar spent ratio. The motor is a stock 04 silverado 5.3 with milled heads, longtube headers, exhaust(no cats), 98 LS1 intake manifold and a cam. Put down 356rwhp and 333rwtq thru the auto in 113 degree Phoenix heat. Car feels great! Have a 3500 stall converter in it and it is a riot to drive - plenty of power for a hooligan car.
Gonna take it to the track this weekend and see how it does.
Gonna take it to the track this weekend and see how it does.
Comp Cams grind done for Xtreme Motorsports don't have the cam card within reach but if I recall correctly I think the specs are:
Lift 591int/600exh, Duration 232int/236exh, 112lsa on a 109 center.
Pulls clean all the way to 7k and no dead spots with my auto. Sounds great as well. Prolly a touch large for a 5.3 but I plan on building up from here and have 150shot as well so....not really.
Lift 591int/600exh, Duration 232int/236exh, 112lsa on a 109 center.
Pulls clean all the way to 7k and no dead spots with my auto. Sounds great as well. Prolly a touch large for a 5.3 but I plan on building up from here and have 150shot as well so....not really.
I have just under 1k in my 6.0 after cam, springs, tune, missing accessories, witing harness & pcm.
around here none of the podunk junk yards know a 5.3 or 6.0 is even close to an ls1. I bought my motor (longblock plus intake, flywheel and partial accessories) for 450 bucks with 36k miles. same place wanted 1500 for an ls1 longblock with over 100k miles.
around here none of the podunk junk yards know a 5.3 or 6.0 is even close to an ls1. I bought my motor (longblock plus intake, flywheel and partial accessories) for 450 bucks with 36k miles. same place wanted 1500 for an ls1 longblock with over 100k miles.
i picked up my 5.3 for $350 with 30k on it for just the motor, but by the time i got engine, tranny, pcm, harness, and whatnot, im still WAAAAY cheaper then what an LS1 would cost. ( i do the shop around part, and find stuff cheap here local)
But i probaly dont even have $1000 in everything?
But im having an issue with wiring for tranny, its staying in limp mode...
Itll shift quickly afte start up and stay in limp mode the rest of the drive.
But i probaly dont even have $1000 in everything?
But im having an issue with wiring for tranny, its staying in limp mode...
Itll shift quickly afte start up and stay in limp mode the rest of the drive.
as stated for FI iron block all the way
for N/A you can find the aluminum block cheap too
guess I got a decent price on my ls1 (2k with accessories, harness, ecm) but I wanted aluminum
and as was stated most yards don't know any difference except engine size and what the hollander interchange tells them it fits (lucky for my company they have me lol)
for N/A you can find the aluminum block cheap too
guess I got a decent price on my ls1 (2k with accessories, harness, ecm) but I wanted aluminum
and as was stated most yards don't know any difference except engine size and what the hollander interchange tells them it fits (lucky for my company they have me lol)
Just from what I've gathered from this site, you can choose between iron vs aluminum, standard valvetrain versus displacement on demand valvetrain, and gen III vs gen IV blocks.
You'll have to do research to see which one of those is best for you. Personally, I'm going for the aluminum for weight and standard valvetrain for reduced complexity. I don't know all of the differences between GenIII and GenIV to know if there is a reason to pay a premium for the newer GenIV blocks?
Here's a good explanation of some of the difference truck engines: http://en.wikipedia.org/wiki/GM_Vortec_engine#5300
awesome numbers, my engine puts out similar #s. How much does your stang weigh?
Last edited by Brismo7; Jul 10, 2008 at 07:34 PM.