Turbo or Supercharger?
TECH Addict
Joined: Oct 2016
Posts: 2,513
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From: PDX-OR-USA
Do you have the offset rear pumpkin and transfer case? I know you'll find some engineering limits with them eventually.. 
Are you running a Redline/Amsoil/Royal purple lube in the transfer case? Because it needs it for high HP, has too much side load on the thrust surfaces and gets hot otherwise..
Are you running a Redline/Amsoil/Royal purple lube in the transfer case? Because it needs it for high HP, has too much side load on the thrust surfaces and gets hot otherwise.. The freaking OP cares about lowend torque.....hence the comments of "towing" and "offroading". Turbo isn't the answer for EVERYTHING....and I'm a turbo guy.
What do you guys think? Should I grab this if it will clear my hood?
Thread Starter
Teching In
Joined: Jun 2017
Posts: 38
Likes: 4
Do you have the offset rear pumpkin and transfer case? I know you'll find some engineering limits with them eventually.. Are you running a Redline/Amsoil/Royal purple lube in the transfer case? Because it needs it for high HP, has too much side load on the thrust surfaces and gets hot otherwise..
Are you running a Redline/Amsoil/Royal purple lube in the transfer case? Because it needs it for high HP, has too much side load on the thrust surfaces and gets hot otherwise.. I am surprised as well. With the weight, 33” tires, 9.5” rear end, transfer case, and the 4L80 I have excessive power train loss. The cam probably isn’t helping either. It made 150lbs of torque at 2000 rpm and over 300lbs at 3k. Max torque was at 3750, putting down 365 tq. It’s been on the dyno twice now. Just a dog out of the hole, kinda depressing.
With a nicely done LQ4 and a stall of 3200, maybe a proper cam selection will wake up that low end, as others have stated, the Blower route is a great choice and will certainly wake up that low end for towing and trail use offload! Just seems very odd that you cannot spin those rear tires at will having a stall converter already...
Gearing could be hurting, with 33 inch tall tires, what's your rpm at 60mph?
That Blower looks like a nice choice!
TECH Addict
Joined: Oct 2016
Posts: 2,513
Likes: 480
From: PDX-OR-USA
One other thing you might double check, make sure your Case is actually an all bearing supported unit and isn't using center bushings, Not 100% sure But I recall Toyota and others back in the day using bushings in the front drive side instead of bearings and there was a lot of drag under load, yours should be new enough to have avoided that but worth a look if you happen to have the cover off it..
I am surprised it doesn't light the tires on demand,, all the ones I've rode in with a V8 (Even a 302) would light up the tires on demand, with a manual trans.. The one I drove with a TH350 was a tire evaporator.. It only had a 2400 stall.. And a transformation shift kit.
Those old side mount kits are crap in factory form. Once you ditch the Whipple piggyback computer and injectors in favor of a full tune and all 8 stock injectors replaced with higher flowing ones, you still have an unintercooled pd blower. My solution was to fab a way to run an A/A intercooler, but it is not even remotely as simple as I just made it sound. However, I was able to put back in 6* of extra timing under load after intercooling it. I am in no way trying to say that kit would be a bad deal, but if he expects it to work well in unaltered form, he would be massively disappointed.
Thread Starter
Teching In
Joined: Jun 2017
Posts: 38
Likes: 4
Those old side mount kits are crap in factory form. Once you ditch the Whipple piggyback computer and injectors in favor of a full tune and all 8 stock injectors replaced with higher flowing ones, you still have an unintercooled pd blower. My solution was to fab a way to run an A/A intercooler, but it is not even remotely as simple as I just made it sound. However, I was able to put back in 6* of extra timing under load after intercooling it. I am in no way trying to say that kit would be a bad deal, but if he expects it to work well in unaltered form, he would be massively disappointed.
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Verdad Gallardo Those old side mount kits are crap in factory form. Once you ditch the Whipple piggyback computer and injectors in favor of a full tune and all 8 stock injectors replaced with higher flowing ones, you still have an unintercooled pd blower. My solution was to fab a way to run an A/A intercooler, but it is not even remotely as simple as I just made it sound. However, I was able to put back in 6* of extra timing under load after intercooling it. I am in no way trying to say that kit would be a bad deal, but if he expects it to work well in unaltered form, he would be massively disappointed.
Mine is on a 2002 Silverado I used for towing for about 320k miles, until my dad bought it. The best I did for tuning it without an intercooler barely had the 4.8 making 350rwhp. I saw no point in trying to increase boost, as the uncooled air caused timing to be severely limited.