Low Boost 416 Single Turbo Selection
Low Boost 416 Single Turbo Selection Hey guys I’m building a 77 C10 and I’ve got a 416 short block with LS3 heads that I was originally planning on slapping a TVS2300 onto but my brother is enjoying the blower so I want to do another turbo build. I only plan to make 650-700whp on E85 so it won't take much on a 416. I’d like to use a KB or Trick T4 manifold and I’d actually also like to use my blower cam as well with the following specs. Any thoughts? Not going for forum winning dyno numbers just a tire spinning street truck. Most will think my numbers are sorry for a 416 but I’m fine with that.
227/243, .612/595, 117 LSA
227/243, .612/595, 117 LSA
S484/96 1.25 T4 would probably do you fine. The 84 billet wheel works as it has a very broad compressor map at higher airflow rates at lower pressure ratios (where larger 4" stroke based engines will operate in a street driven application).
The cam is eh.. assuming it's a 117+5, the 63.5 exhaust valve opening is close to what I'd aim for a 416 street driven vehicle... probably around 61-62 degrees. Intake close will be a little earlier than I'd like with the 4" stroke, but it could work. Add 10 degrees of duration on the intake and it'd be a pretty good cam for that motor/turbo.
The cam is eh.. assuming it's a 117+5, the 63.5 exhaust valve opening is close to what I'd aim for a 416 street driven vehicle... probably around 61-62 degrees. Intake close will be a little earlier than I'd like with the 4" stroke, but it could work. Add 10 degrees of duration on the intake and it'd be a pretty good cam for that motor/turbo.
S484/96 1.25 T4 would probably do you fine. The 84 billet wheel works as it has a very broad compressor map at higher airflow rates at lower pressure ratios (where larger 4" stroke based engines will operate in a street driven application).
The cam is eh.. assuming it's a 117+5, the 63.5 exhaust valve opening is close to what I'd aim for a 416 street driven vehicle... probably around 61-62 degrees. Intake close will be a little earlier than I'd like with the 4" stroke, but it could work. Add 10 degrees of duration on the intake and it'd be a pretty good cam for that motor/turbo.
The cam is eh.. assuming it's a 117+5, the 63.5 exhaust valve opening is close to what I'd aim for a 416 street driven vehicle... probably around 61-62 degrees. Intake close will be a little earlier than I'd like with the 4" stroke, but it could work. Add 10 degrees of duration on the intake and it'd be a pretty good cam for that motor/turbo.
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I would still be using a T6 turbo and manifolds on 416 cubes even at low boost.
S480 T6 1.10 would be smallest I would go. on 416 cubes it will make your desired power at around 10PSI with no back pressure and nothing working hard. also leaves plenty of room to turn it up
S480 T6 1.10 would be smallest I would go. on 416 cubes it will make your desired power at around 10PSI with no back pressure and nothing working hard. also leaves plenty of room to turn it up
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Hey guys I’m building a 77 C10 and I’ve got a 416 short block with LS3 heads that I was originally planning on slapping a TVS2300 onto but my brother is enjoying the blower so I want to do another turbo build. I only plan to make 650-700whp on E85 so it won't take much on a 416. I’d like to use a KB or Trick T4 manifold and I’d actually also like to use my blower cam as well with the following specs. Any thoughts? Not going for forum winning dyno numbers just a tire spinning street truck. Most will think my numbers are sorry for a 416 but I’m fine with that.
227/243, .612/595, 117 LSA
227/243, .612/595, 117 LSA
for turbo selection, I think the Bog Warner S475/96, or S480/96 will work very well, and those are the best bang for the buck quality turbos available, but you will have to spend money on a T4 turbine housing to make it fit nice on that KB manifold you want to use( 1.1a/r, or 1.25a/r would be good)
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Don't over turbo it for such lowly goals. Any reasonably sized turbo will make that power at low boost. If you're honest with yourself that 650 doesn't become 850, go smaller on the turbo and increase your area under the curve power. I also didn't see a max rpm which will also play into the turbo choice.
Last edited by ddnspider; Dec 29, 2018 at 04:29 PM.
Don't over turbo it for such lowly goals. Any reasonably sized turbo will make that power at low boost. If you're honest with yourself that 650 doesn't become 850, go smaller on the turbo and increase your area under the curve power. I also didn't see a real which will also play into the turbo choice.
Don't over turbo it for such lowly goals. Any reasonably sized turbo will make that power at low boost. If you're honest with yourself that 650 doesn't become 850, go smaller on the turbo and increase your area under the curve power. I also didn't see a max rpm which will also play into the turbo choice.
Finally somebody gets it. You could hit his power goals N/A. The only reason for a turbo is to make the same power with a much more streetable combo. A smaller turbo is also easier to package. A 416 could do 650 while being smooth as glass at idle and very quiet overall. The only issue would be managing all that low rpm torque.
I agree about not going wild with stuff,
And the OP can most definitely make use of his existing cam, and an S475/96 or s480/96.
416 ci will be very happy with those parts, even at a low boost to make 650whp. Which will likely be about 8psi, maybe less
And the OP can most definitely make use of his existing cam, and an S475/96 or s480/96.
416 ci will be very happy with those parts, even at a low boost to make 650whp. Which will likely be about 8psi, maybe less
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From: Norn Iron
Since I started DDing an electric Leaf, my concept of smooth and quiet has been a bit skewed. My Mercedes E seems loud by comparison. When I finish redoing the GTO I may need earmuffs just to look at it, LOL.
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From: Norn Iron
Aint no 1000 anything in a Leaf though !! Not even 100...miles !! lol
9 Second Club
Joined: Nov 2003
Posts: 13,616
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From: Norn Iron
But electric really does have some appeal for a daily, even more so if charge points are free which would mean almost free motoring.