engines
05-23-2012, 05:54 PM
#21
Lots of people run the T-56 in their trucks (and I hope to soon). And with the 4:56 gears that make it work best, it should tow just fine. A T-56 Magnum, or Viper/modified box will probably work better if you're towing really heavy, but most anything that you would normally tow with a 1/2T truck should be fine (boat, medium car on trailer, small camping trailer, 3-4 quads).
06-05-2012, 09:54 PM
#24
Staging Lane
Join Date: Jun 2011
Posts: 71
Likes: 0
Received 0 Likes
on
0 Posts
07-23-2012, 10:12 PM
#25
Teching In
Thread Starter
Join Date: Feb 2010
Posts: 45
Likes: 0
Received 0 Likes
on
0 Posts
so i found a couple 5.3 for fairly pretty cheap but all the 6.0 i've looked at were 3x the price of the 5.3's so i have a few questions for you guys.
my goals for this motor is high 300's low 400's for hp numbers with say 80 to 90% of torque available in the 2000 to 2500 rpm range.
first question- i did a pretty decent job at porting and polishing my jeep's stroker motor(4.6L straight 6) so how big of a difference will gasket matching and clean up do on these ls motors? jeep motor are notorious for not breathing very well so anything helps them but from what i understand ls motors were designed around good flow. the 5.3's i've been looking at all have 706's and was wondering if it was worth it to get a set of 6.0 heads and pnp them instead of the 706's?
i see most people are swapping in tbss intakes or nnbs intakes. what would be the best intake for a truck that gets used for alot of towing? the 5.3 i'm looking at has a cracked intake so it has to get replaced anyways
does anybody have any desktop dyno 5 flow files for intake and heads?
still debating on what tranny to use but if i stay with the auto what would be a good stall speed for what i want to do?
stock injectors are what 26lb? i'm guessing for what i'm wanting i'll need somewhere in the 30lb range?
my goals for this motor is high 300's low 400's for hp numbers with say 80 to 90% of torque available in the 2000 to 2500 rpm range.
first question- i did a pretty decent job at porting and polishing my jeep's stroker motor(4.6L straight 6) so how big of a difference will gasket matching and clean up do on these ls motors? jeep motor are notorious for not breathing very well so anything helps them but from what i understand ls motors were designed around good flow. the 5.3's i've been looking at all have 706's and was wondering if it was worth it to get a set of 6.0 heads and pnp them instead of the 706's?
i see most people are swapping in tbss intakes or nnbs intakes. what would be the best intake for a truck that gets used for alot of towing? the 5.3 i'm looking at has a cracked intake so it has to get replaced anyways
does anybody have any desktop dyno 5 flow files for intake and heads?
still debating on what tranny to use but if i stay with the auto what would be a good stall speed for what i want to do?
stock injectors are what 26lb? i'm guessing for what i'm wanting i'll need somewhere in the 30lb range?
07-30-2012, 10:33 AM
#26
Go with a 6.2l. Better milage and more power. Afm is a joke. You wont get better milage unless you live were its all flat and it burns oil in the down cylinders if it stays in 4 mode more the a second.
07-30-2012, 12:12 PM
#27
Man Motor club
Join Date: Jun 2007
Location: Sunniest city on Earth
Posts: 2,623
Likes: 0
Received 1 Like
on
1 Post
If the price of the 6.0 scares him off, I really don't see him coughing up the money for the 6.2. I also don't see him utilizing AFM on a 5.3 retrofit, so that's a moot point.
07-30-2012, 01:49 PM
#28
Go with (what I think is) the best of both worlds. Buy the 5.3 and put a 4" stroker crank in it. If you bore it out to 3.905 (LS1 bore) you end up with a 383. With a mild cam (220-224) and good heads youre easily into the hi 400s in both torque and HP and still get pretty good mileage. Oh and its 6.2L too...
07-30-2012, 02:15 PM
#30
so i found a couple 5.3 for fairly pretty cheap but all the 6.0 i've looked at were 3x the price of the 5.3's so i have a few questions for you guys.
my goals for this motor is high 300's low 400's for hp numbers with say 80 to 90% of torque available in the 2000 to 2500 rpm range.
first question- i did a pretty decent job at porting and polishing my jeep's stroker motor(4.6L straight 6) so how big of a difference will gasket matching and clean up do on these ls motors? jeep motor are notorious for not breathing very well so anything helps them but from what i understand ls motors were designed around good flow. the 5.3's i've been looking at all have 706's and was wondering if it was worth it to get a set of 6.0 heads and pnp them instead of the 706's?
i see most people are swapping in tbss intakes or nnbs intakes. what would be the best intake for a truck that gets used for alot of towing? the 5.3 i'm looking at has a cracked intake so it has to get replaced anyways
does anybody have any desktop dyno 5 flow files for intake and heads?
still debating on what tranny to use but if i stay with the auto what would be a good stall speed for what i want to do?
stock injectors are what 26lb? i'm guessing for what i'm wanting i'll need somewhere in the 30lb range?
my goals for this motor is high 300's low 400's for hp numbers with say 80 to 90% of torque available in the 2000 to 2500 rpm range.
first question- i did a pretty decent job at porting and polishing my jeep's stroker motor(4.6L straight 6) so how big of a difference will gasket matching and clean up do on these ls motors? jeep motor are notorious for not breathing very well so anything helps them but from what i understand ls motors were designed around good flow. the 5.3's i've been looking at all have 706's and was wondering if it was worth it to get a set of 6.0 heads and pnp them instead of the 706's?
i see most people are swapping in tbss intakes or nnbs intakes. what would be the best intake for a truck that gets used for alot of towing? the 5.3 i'm looking at has a cracked intake so it has to get replaced anyways
does anybody have any desktop dyno 5 flow files for intake and heads?
still debating on what tranny to use but if i stay with the auto what would be a good stall speed for what i want to do?
stock injectors are what 26lb? i'm guessing for what i'm wanting i'll need somewhere in the 30lb range?
I've read a few threads where the nnbs/tbss intake hurt low end on a LM7 with stock heads.
Imo, a fbo, stock cammed lq4 is going to give you what you want. And would be cheaper than camming a LM7. Even though they are half the price of a lq4.
If I was going to tow with a higher stall converter; I'd run around a 2800 triple disk.
Go with (what I think is) the best of both worlds. Buy the 5.3 and put a 4" stroker crank in it. If you bore it out to 3.905 (LS1 bore) you end up with a 383. With a mild cam (220-224) and good heads youre easily into the hi 400s in both torque and HP and still get pretty good mileage. Oh and its 6.2L too...
Edit: https://www.performancetrucks.net/fo...calade-505456/
^that would a nice swap