nonnieselman
Posts: 677
Joined: 7/18/2005
From: Crystal Springs, Ms
Status: offline
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quote:
ORIGINAL: sanjac
I dont mean to come off as a jerk but a 5.3 is not in the LS series of motors, its a Generation 3 small block, and physically from the outside they are identical with the exception of oil pan and intake manifold. The 5.3's RPO is actually LM7 for just the regular 5.3, the flex fuel, AFM, and all aluminum 5.3's have different RPO's
quote:
Question:
Is it hard to switch to elec fans? how expensive?
I think that the electric fans are good upgrade IMO. it varies from where you get it, but you can pick them up for like 400 to 500 dollars, and they come with everything you need, you can also run a low temp thermostat and set the fans to come on sooner. I believe that in '04 maybe '05 some Tahoe's and Suburban's came with electric fans so it wont be too bad to switch to them. Idk how far you want to go with your mods but with the electric fans you can run a low profile LS1 or LS6 intake mainfold, the only thing you gotta watch out for is the water cross over lines depeding on the year, and get the throttle body ported. Another mod you can do is run a LS6 cam its not a real radical cam and wont affect it driveability, and if you do the cam, while your there you can also get a higher flow and higher pressure oil pump, and double roller timing chain, and if you want to do somethin with the MAF you could possibly get get an SLP or GMS (I personnally prefer the SLP) which has a larger diameter and is descreened. You can do this if you want idc but it will be a pretty nice setup with all the other mods that have been listed. Im in the process of doin the same thing but ive got an actuall LS1 and I had the heads ported, and Im gonna run a Comp cam tho, Scat rods and Mahle flat top pistons, plus whole lot of other crap thats going into that engine.
My LT1 EFans cost me $80..
No way i would pay 400-500 for Electric fans, thats crazy!
The tahoes and burbs have the 34" radiator... so your goin to need it to run those fans.. most trucks have the smaller 28" radiator like mine.
The Aftermarket MAF is a waste of $$, you could go Speed Density tuned and ditch the MAF, just get a IAT Sensor and wire it in. Weight Reduction is what i call it  . Dont need no silly MAF..
You could just live with the "Tick" and save up for another engine? haha It would be funner!
You can get 5.3s for fairly cheap, and if you wanted to you could do a subtle heads/cam setup before you do the swap?
Just throwing ideas out there.
Did we just have somebody else say "CHIP"?? OH my!!
My 5.3 was ticking extremely loud, i just drove it.. I even tried to blow it up but it didnt work.. It was making some strange noises and throwing all kinds of Knock Retard at strange times.
A 2004 LQ4 sovled alot of problems and created more like rear tires wearing extremely fast, broken transmissions.. ya know the fun stuff?
< Message edited by nonnieselman -- 10/15/2008 2:33:08 AM >
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2005 Red Foreman 4x4 S
-Rubi Rims w/ 26" MST
2000 Silverado ECSB
LQ4 4L80E STS Nitrous
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RE: 5.3 mods? need opinions... - 
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