Want advice, please.

[popo8]

So as many of you know I wrecked my Camaro which was a procharged stroker LT1 car.

The ProCharger was a p1sc which is a rather small ProCharger and I had it maxed out on the Camaro only able to make about 10 pounds of boost. Entire drivetrain motor and transmission are most probably going to go into my Impala , and the plan is to upgrade a procharger for more boost for that setup.

With that being said, we come to my 2002 Cadillac Escalade.

Since I have a p1sc that I will not be reusing on the new project I thought why not get the brackets fuel injection fuel pump excetera get it tuned on the Escalade. Here's my concern. People are telling me that when I tell a proximately once a year that towing with a boosted gasoline motor will be hell on the truck. I'm having a hard time believing this seeing as how people are racing stock bottom end 6.0 within sayings amount of boost and I'm only looking to spin about 5 to 10 pounds of boost maximum.

Keep in mind the Cadillac is my daily driver except for when the weather is nice I'll drive my Trans Am or my Impala. I have no concerns about driving a boosted Escalade with no trailer on it my only concern is my one trip annually from Pennsylvania to Kentucky and back with a enclosed car trailer.

Any insight would be greatly appreciated from anybody who's done it to people who just know because this is new to me the idea of boosting a tow rig that's gas powered.

Thank u in advance!!!

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[popo8]

Also wanted to add that the caddy does have a trans cooler on it and has never run hot... motor or trans... even when towing the loaded 24' trailer.

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[bottomline2000]

The only feedback I can give you is i bought my 6ltr from a guy that had an avalanche with a centrifugal supercharger that he used for towing. He was not happy with how it towed and felt it would have been better with a positive displacement blower like Whipple or Magnuson. He had got the 6ltr with plans to swap the motor in the avalanche and then decided to just buy an ecoboost truck.

Not sure if that helps but prochargers seem to be better fitted for lighter cars or all out race trucks. It wouldn't be any worse but not sure it would be appreciated towing.

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[popo8]

The only feedback I can give you is i bought my 6ltr from a guy that had an avalanche with a centrifugal supercharger that he used for towing. He was not happy with how it towed and felt it would have been better with a positive displacement blower like Whipple or Magnuson. He had got the 6ltr with plans to swap the motor in the avalanche and then decided to just buy an ecoboost truck.

Not sure if that helps but prochargers seem to be better fitted for lighter cars or all out race trucks. It wouldn't be any worse but not sure it would be appreciated towing.

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Ok... thanku. Its definitely helpful.

Any chance he explained why he didnt like it?

Anyone else?

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[bottomline2000]

Ok... thanku. Its definitely helpful.

Any chance he explained why he didnt like it?

Anyone else?

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We didn't get into details but more than likely the lack of torque down low which is where the PD blowers excel.

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[popo8]

Gotcha... thanku again.



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[95escahoe]

I forget where I read it but the LQ9 isn't the best for boosting due to the high compression the regular 6.0 is better due to the lower compression seen a few of these boosted tho


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[popo8]

I forget where I read it but the LQ9 isn't the best for boosting due to the high compression the regular 6.0 is better due to the lower compression seen a few of these boosted tho


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Is mine an lq9 or the 6.0? I thought the lq9 was the 6.0.

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[95escahoe]

Is mine an lq9 or the 6.0? I thought the lq9 was the 6.0.

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The LQ9 is the 6.0 in this generation Escalade it's the same as the LQ4 that's in the other 6.0 NBS trucks has higher compression 10:01 and a few other tweaks which is why it's rated at 345hp, was reading on some site the non LQ9 motors were better for boost since there lower compression, seen a bunch of these boosted tho


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[bottomline2000]

The LQ9 is the 6.0 in this generation Escalade it's the same as the LQ4 that's in the other 6.0 NBS trucks has higher compression 10:01 and a few other tweaks which is why it's rated at 345hp, was reading on some site the non LQ9 motors were better for boost since there lower compression, seen a bunch of these boosted tho


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Lq4 and lq9 are both 6.0. The big difference is the dished pistons in the lq4 and the lq9 has flat top pistons (higher compression) with floating rods like the ls2 which are considered to be stronger. Both engines seem to handle boost well although the lq4 may be better suited since the compression is lower. I have a lq4 in my tahoe from an 02 2500 suburban. Escalade and the premium trucks like the SSS seem to get the lq9 and people charge a premium for them but power level is close.

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[iamdub]

For the towing aspect, I don't see how boosting it would have any downsides. It tows your trailer just as it is, at it's current power level. Boosting it would only increase power. Sure, it won't be a whole lot of extra power, especially at lower RPM. But, mo powa is mo powa. The real problem is your motor being an LQ9. This limits the amount of boost you can put on it. People throw 10+ PSI on LQ9s all the time, but they're in purpose-built lightweight street/race cars and their tunes have to be on-point. Mashing the throttle on your heavy SUV while pulling a trailer adds a whole world of dangerous variables when you're already on the ragged edge. You stand on the pedal, the trans downshifts and the RPMs climb, so the SC starts making it's boost. But, instead of the truck being light enough to move in conjunction with the RPM from this additional power, it responds much more slowly because it's pulling a big trailer. This is the equivalent to severely lugging an engine. With a boosted high-compression engine, you'll probably get detonation first. Best case is that the PCM retards the timing and saves the motor. But you lose power, countering the point of the SC.

You could run lower boost, but then it's not worth the hassle. You're better off going with a cam and maybe even higher compression for the extra low-end snappiness. At least tuning for this would more reliable due to the more consistent variables. Or, go with the SC and have separate tunes for towing and not towing. This would be a whole hell of a lot of work to get it safe yet effective, though. You'd basically have to have someone (someone very experienced) live tune it while you drive around with your trailer.

In short, it's just too risky. Sell the P1 to someone with a more appropriate use and put the funds toward a roots blower or NA mods. Or, if you're rarely ever gonna tow, do what you want with it. For those rare occasions when you do tow, drive like a grandma and don't ever give it lots of throttle and keep the RPMs "low". Ease up to highway speeds and know that you'll never be able to floor it to pass.