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Test a TBSS intake vs stock truck intake from idle to 3500 rpm. I'll like yo see if the stock truck intake can keep up until that specific intake. People sell the intakes for 50 to 80 dollars on eBay.
I'm interested to see how that turns out for you. Do you plan on keeping the factory cam or going aftermarket ?
It's already put together. It has the 385hp LS6 cam. I know not ideal but I had the whole thing put together with things that the builder had already so the price was too good to pass up. Heads are milled 15 and some bowl work was done. I have a 3,200rpm torque converter and 4.88 gears so I'm not overly concerned about the cam. Plus the bump in compression should help. I haven't towed since putting the stall in. I have an external trans cooler but will probably end up putting a bigger one in.
383 (4.00" Stroke), stock 243s, TBSS Stock, ~9.5:1 Comp (regular gas)
212/218 .600/.600 112+3, 1 3/4" LTS
VS
372" (3.625" Stroke) stock L92s or LS3s,212 Intake/ .600" / whatever exhaust
& LSA you want to run same compression any stock intake, same size TB
Test is avg Torque from 1500-3500 Wheel or engine Dyno,
BSFC #s and mileage tow/cruise test.
People were really shaking their heads when the Cathedral TBSS LS2 was putting the hurt on the Rectangle L76/96/Y6...all 6.0's. About 20hp and tq. depending on the rating. Of course a bigger bore helps all
It's already put together. It has the 385hp LS6 cam. I know not ideal but I had the whole thing put together with things that the builder had already so the price was too good to pass up. Heads are milled 15 and some bowl work was done. I have a 3,200rpm torque converter and 4.88 gears so I'm not overly concerned about the cam. Plus the bump in compression should help. I haven't towed since putting the stall in. I have an external trans cooler but will probably end up putting a bigger one in.
Keep me updated on how this turns out.....
Look at this setup guys. It doesn't get any sweeter than this.....
This has turned out to be a really cool thread. I'll throw this out there for general discussion:
Take the standard bore 5.3 and add 4" stroke, using 64cc 243 heads, and 12cc dish, I get 9.6CR, so I'm guessing that's pretty close to what WS6Store is thinking. That's 359 CI, so real close to a 6.0 displacement.
TBSS intake for sure.
212/220-110+4 cam with some 1.8 rockers. Could even go 210/216-110+4, which would be even torquier, but would run out of steam early. Probably making peak power at 4000 RPM.
1-5/8 headers with 36" primary length
Be a torquey little bugger. Wish I hadn't blown what I was gonna spend on the suburban on other crap...
I have a spare 3 bolt truck manifold and an 92 but not a nnbs. Gotta keep costs down on the pet projects so to speak. I also have a "test" rolling chassis to work with. So all of that is good.
If i can get a tbss manifold i can do the test with it, otherwise its the 3 bolt truck.
I have a spare 5.3 block and an ls2 thats been bored to a 4.030 so those will have to suffice so to speak.
Ill start gathering more parts.
This has turned out to be a really cool thread. I'll throw this out there for general discussion:
Take the standard bore 5.3 and add 4" stroke, using 64cc 243 heads, and 12cc dish, I get 9.6CR, so I'm guessing that's pretty close to what WS6Store is thinking. That's 359 CI, so real close to a 6.0 displacement.
TBSS intake for sure.
212/220-110+4 cam with some 1.8 rockers. Could even go 210/216-110+4, which would be even torquier, but would run out of steam early. Probably making peak power at 4000 RPM.
1-5/8 headers with 36" primary length
Be a torquey little bugger. Wish I hadn't blown what I was gonna spend on the suburban on other crap...
So all stroke and keep factory bore ?
On the 1.8 rockers which ones would you use for a build this type ?
Last question... do you think a engine like this would benefit using titanium retainers vs steel retainers?
On the 1.8 rockers which ones would you use for a build this type ?
Last question... do you think a engine like this would benefit using titanium retainers vs steel retainers?
Steel all the way.
You wanted a better budget so steel saved roughly $70 on one part.
These 2 builds im looking at will both use the pac1218s and same cam. Alot better budget there.
Adding guideplates to ls engines for rockers was an easy way out and likely cost some power also.
Still the avg power gained was good also with 0 drawback.
That was on a stock cam also and weak springs. .509 lift is nothing gained but good power for basic "bolt on"
Where else can you gain basically 10/10 and a nice average for $400 with no drawback? Even underdrives have drawbacks.
Last edited by tech@WS6store; 10-11-2017 at 02:13 PM.
Adding guideplates to ls engines for rockers was an easy way out and likely cost some power also.
Still the avg power gained was good also with 0 drawback.
That was on a stock cam also and weak springs. .509 lift is nothing gained but good power for basic "bolt on"
Where else can you gain basically 10/10 and a nice average for $400 with no drawback? Even underdrives have drawbacks.
That would not be. A real dedicated tow pig would be xcab or crew and def 4x4 and not lifted like that. Thats a show truck not a tow rig.
You want to tow alot, you dont want a light truck or high center of gravity for your load to toss around and make even more blind spots with.
The 03-07 nbs are the best IMO.
Or this if you want an hd lifted show and tow truck.
10-11-2017, 06:50 AM
