What did you do to your lq4 ?
09-03-2012, 10:37 PM
#1
What did you do to your lq4 ? Im new to this fi stuff and Im working on putting a 6.0 in my 79 malibu. I have both an 5.3 and 6.0 that I could use for my swap.Im just wanting to know whay tpe of mods if any did you do to your bottomend.This will be a mostly track car but still streetable with ported 317s and a custom cam.looking to do atleast 15#s on pumpgas and meth.This is something I want to do right the first time and hopefuly get it to last for awhile.Any sugestions will br appreicated.sorry if you cant read this im doing this from my phone
09-03-2012, 10:59 PM
#2
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I used a stock crank, compstar h beams, wiesco flat top pistons with ls3 valve reliefs, upgraded wrist pins, block bored 30 over, patrick g 222/226 custom turbo cam, head studs, ls9 head gaskets and LSA heads. Compression is 10 to 1 and I plan on running 15-17 psi with a Alky control methonal injection set up. Should make 780-800 whp through a t56 and 9".
09-04-2012, 08:35 PM
#5
im about to do twin ebay gt35's on an lq4 for this winter. blew a head gasket in my t76 5.3 s10 and got a good price on an lq4 so decided to keep bottom end stock, tu2 cam, new style timing chain, ls9 headgaskets, ported 317's, comp pushrods, and patriot gold duals. hoping for 500-600whp on low boost then cranking it up later once my fuel system improves.
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09-04-2012, 10:12 PM
#9
On the lq4? Starting out and 8 and however much it takes to reach ATLEAST 9's lol. So 15lbs max. That seems to be the safe spot for stock bottom end. Not going to rev past 6500 cause i don't want rod bolts. My 5.3 i only wanted to run 15lbs but the modified wastegate spring wanted more lol. Let off at 18lbs and that's when it killed gasket. A good 2 bar sd tune will keep it safe at 15lbs.
09-05-2012, 03:41 PM
#17
Mine is a 2003 LQ4 and I am currently running 11.5psi. It made 660rwhp through a 6 speed at that boost level. The only things changed from stock are the cam (225/225), springs (Patriot Golds), pushrods and intake (LS6). As many have proven, not much is necessary to make 600-700rwhp on a factory engine. Things like rod bolts I would argue are unnecessary for most. They only add additional rpm capabilities with the added risk of losing a bearing.
What year is your 6.0? That will make a big difference in how far you can go with it. If it came from a 2005 and up truck, it has the larger LS2 style rods which are more capable.
What year is your 6.0? That will make a big difference in how far you can go with it. If it came from a 2005 and up truck, it has the larger LS2 style rods which are more capable.
09-05-2012, 03:50 PM
#18
Yeah Iam going to do ls9 head gaskets,ls6 intake 60#jectors,and headstuds. Are you saying dont worry to much about doing rod bolts ? I was also worried about ring gaps but if its not a must I will just run them asis. Thanks for the imput fellas im just here tring to learn what works and dont work
