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Stu's Turbo 392 Stroker Rebuild

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#501 ·
Gotcha. :thumb:
 
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Discussion starter · #502 ·
Did take the truck for a ten mile drive. Runs good. Can feel more off the line torque, and jumps into boost a little quicker. The engine runs smoother than the 348 with less throttle. :thumb: Had to cut the test drive short. It looked like it was going to rain. :eek::eek::eek: So, drove it back home and put the truck in the garage. Just in time too.......:D
 
#503 ·
Still gun shy about puddles? :lol:
 
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#504 ·
Looks impressive. Well done...
 
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#506 ·
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Discussion starter · #512 · (Edited)
Was able to take the truck on another break in cruise down the highway. And as I expected, the intake manifold has caused some noticeable loss in TQ and HP(pep) at cruising speeds between 50-70mph with lite throttle 1500 to 2700rpm. Haven't taken the engine above 3000rpm due to the needed fuel system mods and tuning. The a/f looks fine and the engine is running ok. What I didn't expect was the loss in how fast the turbo used to boost up. It obvious that the GT45 turbo builds boost much better with the much shorter boost pipe and air to water intercooler. Humm..... But, did have to reduce the turbo outlet pipe to 2 1/2" due to I ran out of 3" hose sleeves. Will be changing it to 3" outlet boost piping from turbo. Other than that, going to leave it as is until the fuel system, engine break in and tuning are done. Wont know how it's going to truly run until all that is done. Just hope the intake manifold makes up for the bottom-end hp/tq loss at the top end rpm range.......
 
#513 ·
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#514 ·
What size a/r on the turbo? It'll definitely take longer to spool but you'll be able to make more power once you get it to at least a 3" exhaust. Mine made a huge difference between the cutout open vs closed. You're pumping way more air through ur exhaust. But once your fuel system is good to go and you can romo on it, I bet it blows your mind with what it does
 
Discussion starter · #516 · (Edited)
Going to put the air to water intercooler back on. The GT45 turbo worked good with it. That might be where I lost some lower rpm hp/tq too. That means the radiator will have to be change out to an 05. At least I'll save a little money by not having to buy some more boost piping, hose couplings and clamps...... :ermm:

When we tune this Keith, lets do it at 14-15psi boost. :thumb:
 
Discussion starter · #517 · (Edited)
Carrolls Ram said:
you'll be able to make more power once you get it to at least a 3" exhaust.
Click to expand...
I'm running a 4" exhaust system Austin. It's the Chinese copy of the GT45 turbo. 800 to 850hp capable turbo. Wanted the Gt45 to help the truck have better street manners and perform great at the track. And the engine can grow into it....... Or, so I would like to think. One of these days, might get a Comp Turbo.
 
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Ghost03hemi
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