Considering a 6L swap, need a reality check
03-10-2005, 06:04 PM
#11
How many miles on the 5.3??? how does it run? And what year truck is it? big differences from 99-02 in the PCM's.
I drive my truck everyday, and it's my only vehicle. There is just something about boosted vehicles that makes them so nice to drive. I'm hoping for 12's as soon as I can in a street driven truck.
I would not swap the engine. Look into a 4l80e tranny instead(if you can.. not sure if you have 4wd or not), and keep the 5.3. These motors can handle a crap load of power usually. The trannies and stock rear ends can't.
I say get the STS a set of 6.0 heads and ls6 cam and springs. They are Cheaper upgrades and will help the boost on the motor, but you can run alot of boost if you get a meth kit and/or intercooler. Then you need a fuel system. You could even get a shot of NOS on there for the whole shots and take 11's down on an 80e, or even 10's w/o breathing. Either way, you want 12's, your tranny is going to be your biggest concern.
when you blow the motor, swap in the bigger block and go crazy. And the tranny will still be there for you.
I drive my truck everyday, and it's my only vehicle. There is just something about boosted vehicles that makes them so nice to drive. I'm hoping for 12's as soon as I can in a street driven truck.
I would not swap the engine. Look into a 4l80e tranny instead(if you can.. not sure if you have 4wd or not), and keep the 5.3. These motors can handle a crap load of power usually. The trannies and stock rear ends can't.
I say get the STS a set of 6.0 heads and ls6 cam and springs. They are Cheaper upgrades and will help the boost on the motor, but you can run alot of boost if you get a meth kit and/or intercooler. Then you need a fuel system. You could even get a shot of NOS on there for the whole shots and take 11's down on an 80e, or even 10's w/o breathing. Either way, you want 12's, your tranny is going to be your biggest concern.
when you blow the motor, swap in the bigger block and go crazy. And the tranny will still be there for you.
03-10-2005, 06:06 PM
#12
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Originally Posted by thunder550
Doesn't the Autotrac accomplish almost the same thing?
One other thing I forgot to mention about block choice is that I think if I get the LQ4 or LQ9 block I can use the Radix I have right now without changing anything. That would probably save me some big $$. Can the LS2, LQ4, LQ9, and LM7 (I think that's my 5.3 engine code) all share the same intake manifold?
One other thing I forgot to mention about block choice is that I think if I get the LQ4 or LQ9 block I can use the Radix I have right now without changing anything. That would probably save me some big $$. Can the LS2, LQ4, LQ9, and LM7 (I think that's my 5.3 engine code) all share the same intake manifold?
03-10-2005, 11:18 PM
#13
Originally Posted by Faze2183
well ive driven a gmc awd truck, and it didnt grind and chatter in the steering inless that steering shaft was the problem, because any time i have autotrac on it grinds and sounds like crap when i turn and etc....
Originally Posted by BADMOFO
I think you'd be best off asking someone like F8TLZ71, as he has a simillar truck and knocks off low 12's.
Originally Posted by chris99gmc
How many miles on the 5.3??? how does it run? And what year truck is it? big differences from 99-02 in the PCM's.
There is just something about boosted vehicles that makes them so nice to drive.
I would not swap the engine. Look into a 4l80e tranny instead(if you can.. not sure if you have 4wd or not), and keep the 5.3. These motors can handle a crap load of power usually. The trannies and stock rear ends can't.
I say get the STS a set of 6.0 heads and ls6 cam and springs. They are Cheaper upgrades and will help the boost on the motor, but you can run alot of boost if you get a meth kit and/or intercooler. Then you need a fuel system. You could even get a shot of NOS on there for the whole shots and take 11's down on an 80e, or even 10's w/o breathing. Either way, you want 12's, your tranny is going to be your biggest concern.
Anyone know what the limit for boost is on an LQ9 on 91 octane?
03-11-2005, 09:07 AM
#15
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You already have a Radix so there is no reason to get rid of it! All your gonna need is a shortblock and keep the rest the same! You will want to do a new valvetrain obviously and headers. I didnt see what cam you were running at this time but Im sure youll want to go bigger!
03-11-2005, 03:51 PM
#16
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you might want to look into a 402 or 408. i believe it's scoggin dickey that has a great deal on the 402's. that should tow a boat well.
as for boosting the LQ9, i'd limit it to 9psi on 91 octane.
as for boosting the LQ9, i'd limit it to 9psi on 91 octane.
03-16-2005, 05:24 AM
#19
I've already had my 4L60E rebuilt once....went from 6 to 9 clutch pads, shift kit, etc...the guy at the tranny shop (American Transmission in Scottsdale, AZ) told me that I would want to go to 12 clutch pads, then I would basically have a 4L80E anyway. They do a lot of work for Barrett Jackson, so I trust their judgement. I am prepared to swap out the front and rear diff and transfer case when the time comes.
03-16-2005, 08:43 AM
#20
Originally Posted by thunder550
Which block do they use for the 408?
Overall, what do you guys think? LQ4 or LQ9? I can use the Radix on either one. Or should I say screw it and save for an LS2?
Overall, what do you guys think? LQ4 or LQ9? I can use the Radix on either one. Or should I say screw it and save for an LS2?