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Any thoughts about a single S369 on a 5.3, mild cam 212/218, 550/550, 112. Ls6 intake. Car weighs 3,300lbs, th400, 3.08 gear, car is a cruiser, just needs some more power to make it fun again. Fought belt slip and multiple other issues with the vortech s trim all summer and finally ditched it.
550/600 hp and quick spool is the goal. Fuel system was built for boost and E85 in mind.
Will work great. I run a VS racing 67/65 on my fathers turbo 5.3 suburban and it is great. 7psi and ethanol
I dont think you will quite get to 600 with that turbo. Too small.
I dont think you will quite get to 600 with that turbo. Too small.
With the s369? It's got enough compressor, I'll have to dig through my notes for turbine flow rates, but pretty sure it's more than enough for a 600hp mark. If I could fit an s400 I would go that route but they are just too big.
I have one, but haven't been pushing it too hard yet.
Alum 5.3, 10.1:1, Texas Speed CNC Ported 799 heads, Tick Stage II 4.8/5.3 turbo cam: 219/223 .617/.595 LSA114+3, Dorman LS2 intake, LS6 front manifold, 2" crossover, modified truck turbo manifold with the turbo hanging off it. 2920 lb vehicle weight, 6 speed manual, 3.091 final drive. Manual boost controller, wastegate set at 3.5 psi and it starts creeping at 4000 rpm and reaches about 6 psi at 6800 rpm.
If I floor it at 2200 rpm in 3rd, I have 1.5 psi at 2400 rpm 3 psi at 2700 rpm.
I did modify the compressor housing to enlarge the gap in an effort to make the turbo flow more at low pressure ratios. So far I really like it!
Stock:
Member here did in a 280z I believe. Want to say his SN was OldGold or something similar. It ran really well.
Though as pictured the s369 has flow issues at the boost levels most v8's run. Its really made for higher pressure ratios on smaller engines. The S366 has a compressor cover more like the modified one above. I'd call Jose and ask which S3XX is best suited for your goals. A worked S366 from Jose may make more than a box stock S369. Another member on here switched from twin S366 to S369 and lost power. Then went to precision 66's and made like 100+ more whp than the S366's. (on full tilt).
Yup here it is... 11lbs it made 540whp and he ran it at 16lbs. He believed it was 600ish at that level and pretty much tapped.
I've got a S369 rear mounted on an LS1 with T56 manual. Makes roughly 550rwhp and 590ftlbs on 9psi. Comes on boost pretty easily even when bolted at the back of the car. I'd say there's plenty more left in the turbo as we limited it to 550rwhp since I'm running gen3 SBE.
I've posted the dyno charts and other bits on this forum if you do a search.
I have a pair of T3 frame gt3582s on the shelf that I might just use instead.
I have t4 frame twin 3582s on a 5.7 with an m6. Based on that, I'm guessing you would get some lag with anything less than a 3000 stall converter with those on a 5.3. On the bright side, you could go well past your 600hp goal with no problem.
The .68 T3 gt3582s would be better suited response wise and would still be at 1:1 or damn near at 600hp.(mine were) I had PTCs "budget" 10" on my 5.3 with that setup. Stalled to about 3400 and there was still noticeable lag. My 5.3 was lazy though 241 heads drop compression .7 or so. And the Gt3582’s had larger 64mm comp wheels on them. I’d def want the smaller t3’s and the standard 61mm comp wheel if I went that route.
My gt3582s are .63 ar t3, and are the 61mm compressor wheel. I called PTC a while back, /hey said they have a good street strip converter for around $600.
There was a volvo 240 in sweden some years ago.
Stock bottom lm7, 60mm tial wastegate. One single borg warner s369.
It made 727 whp and 1010 wnm (745 ftlb)
1.15 bar/ 16 psi.
So the turbo is quite capable.
Def. a healthier than average LM7 if its putting that down at the wheels on 16lbs. Or a exaggerated dyno.
It was a engine abused on the limiter in various drift sessions before it got a turbo. If i remember correctly.it had around 160.000 km on it.
Dynoed on a dynapack hubdyno. Found the video of it here: Volvo 240 lm7 dyno and drifting. 727whp 1010nm
Dynapack hubs read notoriously high. Esp. with any correction factors that may be involved. That video proves nothing. You aren’t doubling the NA WHP at 16lbs. And a clapped out cam only 5.3 doesn’t make 363whp. Built a dozen of them... not happening.
Dyno’s are a horrible performance marker, the numbers mean very little. Its just a tuning tool. If we had the cars race weight and trap speed you can get an accurate power estimate.
Several guys have run around that boost level on a 5.3 S36X frame turbo. Its a fun little setup.
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S369 on a mild 5.3 
