Initially I liked the idea of twins a lot. However, the cost is a LOT more, and power is made more efficiently on the single.

Chris, even though I don't own a powerful turbo car, I have been around them, driven them, and are familiar with them and their driving habits. Like I said before, I know I am not going to have traction, and I expect that to an extent. I will for sure end up trying a few different springs with a controller to find what I like.

Lol, I know man. Again, I know my goals are different than most on here. The 1/4 mile it runs is a pure after thought, and what it does it does. Hell, I am content with the lousy 12 second 1/4 mile it runs now with its 118 MPH trap, just for what it is. I just want the power and somewhat reliability for cheap. Like Chris had mentioned, I want a really fun street car that will be taken to the track for fun just a few times a year (not competitively).

The drivetrain will be fine. I already upgraded the M6 this year with all the viper internals and will be beefing up to an aftermarket driveshaft, upgrading the clutch and putting in a very strong rear. I am no stranger to knowing what I need outside of under the hood.

 

I thought the LS6 cam was the best cam for any turbo ls motor?

 

Depends on the twins you go with for cost. A couple of $699 Borg twins will be about the same as a 7675 single. The only additional costs will be extra wastegate and oil lines. You can still use a single intercooler and packaging will be just as easy or easier than trying to fit a monster single downpipe.

 

I went against all odds. I have 6.0 with a cheap 76mm turbo! Spool is instant and it's fun to drive on the street. No idea where it will run out of steam as I haven't pulled it past 5k since the tune isn't finished.

Wish I would have went with a 5.3 instead of the 6.0 though. I was caught up in the whole bigger motor is better/cooler thing. I could have had a 5.3 for half the cost I spent on the 6.0, and used the saved money on a much better turbo.

 

Funny man. The ls6 cam under boost is sufficient to scatter either a 6.0 or 5.3 bottom end with no need for a CUSTOM cam(See my sig)

I see that you are now selling cams(congrats). Now we have thread after thread to look forward to on why everyone needs a custom cam and why a custom cam will make 125 whp over an off the shelf cam

 

I saved $400 on the 6.0 by skipping the custom cam and just leaving the bone stock factory cam in there. It still went faster than the cammed 4.8 and did it on 3 psi less boost.

 

I hear ya there. I would have tossed a different cam in the 5.3 anyway, but a valid point you bring up. Definitely can make power with the stock cam.

A turbo that suits my combo will eventually find it's way to my engine bay. I didn't want anything too crazy for my first turbo build.

 

Cool.

I'll keep selling my cams(off the shelf and custom) and keep having satisfied and happy customers while you keep telling everyone till your blue in the face why you're always right.

 

The pt7675 is a badass turbo. But it would be hard to drop that kind of cash on it since precision has had such bad quality control lately.

 

Tech needs a like button.

 

I hear ya on the precision. I know tons of folks like em, just not had good experience....like customer paying $500 to have one rebuilt that smoked out of the box from day 1 and after the rebuilt with same set up was magically better! Seemed to me he got a bad unit and they just did not want to cover it.

 

I am considering a l33 for my s488 since my stock crank tried to "walk it out" in my lq9.

 

Probably because they give away so many turbos for cars they sponsor that they need to make money somehow lol

 

I picked up a shitload of power changing cams in a TT427. Its not worth it in all setups but in some its critical.

 

https://ls1tech.com/forums/forced-in...l#post16845561

500 hp crank on the engine dyno for a cammed 5.3

Iron 5.3 332ci on E85, ARP head/main studs, custom coated diamond pistons, callies rods, stock crank.
Ported L92 heads, LS3 hollow stem intake valves, LY6 inconel exhausts, PRC EHT springs
LS9 headgaskets
239/243 .625/.625 116lsa Comp Cam
Morel link bar lifters, 3/8 pushrods
9.5:1 Compression Ratio

 

500 hp out of a 5.3 with l92 heads is amazingly cool. awesome. you wont get me to downplay that.

now, pull out your moroso slide rule and help me figure out how much power:

dmizzell was making with his 6.0 when he ran 9.87 at 136.83 at 2700 lbs race weight, with the same l92 heads.

or billyflantos was making with his 6.0 when he ran 9.81 at 134.73 at 2900lbs race weight,

or twinturbo1 is making with his 6.2 and l92 heads when he ran 6.31 at 107.5 in the eighth, at 3050 race weight.
http://www.yellowbullet.com/forum/sh...d.php?t=518809

 

How about Skinnes with his 5.3 when he ran 8.6@167 2600 lb?

 

I do have another 5.3 question; so the 04.5-05+ 5.3's have the stronger LS2 rods, and the L33 motor is lighter as well. This seems to be a good one to look for, but I noticed that they also have the slightly higher CR of 9.9:1 vs the earlier 5.3's that have 9.5:1. Given that the boost will be turned up, would it be wiser to go with the earlier weaker 5.3? Or the newer higher CR 5.3?

I was thinking originally that about a 9:1 or 9.5:1 CR would be about perfect. But perhaps since I will be using an FMIC and E85 the 9.9:1 might be okay? Looking for inputs.

 

those are NA times i posted lol.

with a 6.0 and a correctly sized turbo, skinnies would have achieved the same on less boost. which, imo is easier on the engine. thats what ive been saying all along.

 

I ran a 8.8 @ 157 on my 5.3 @3250lbs but if I can get ahold of a 6.0 you bet Im gonna use it and then there will be some back to back tests using the same combo, turbos, intake, cam, everything. I havent pushed a drop of water on the 5.3, well see if the 6.0 will hold as well.

either would be fine. just find a deal on one and throw it in. I thought you already knew about the 05+ engines having the good rods or I would of told you that earlier