383 -V- Turbo
Thread Starter
Drifting
Joined: Sep 2004
Posts: 1,307
Likes: 1
From: Milford Haven Pembrokeshire
383 -V- Turbo
Just a thought to mull over.
Would a stock or close to stock 1981 350 fitted with a Turbo - and any necessary helping aids, eg cam, headers, or cat in the trashcan,
run with or better a hopped up 383 ??????
And if they are close, who's gonna get the gas milage cup ??
And which would win financially ??
If not a turbo, maybe a procharger...........
Would a stock or close to stock 1981 350 fitted with a Turbo - and any necessary helping aids, eg cam, headers, or cat in the trashcan,
run with or better a hopped up 383 ??????
And if they are close, who's gonna get the gas milage cup ??
And which would win financially ??
If not a turbo, maybe a procharger...........
Drifting
Joined: Sep 2004
Posts: 1,959
Likes: 1
From: North Bend Ohio
The 383 would still have the advantage simply because the bottom end of the 350 can't take too much power unless it is built for it. That said, the turbo motor is going to be much easier to live with on the street and will get better gas mileage. Depending on how it is built it can be a much more refined power plant.
BigBlockk
Later.....
BigBlockk
Later.....
Drifting
Joined: Sep 2004
Posts: 1,959
Likes: 1
From: North Bend Ohio
Originally Posted by Twin_Turbo
I disagree, the SBC can take quite a beating, what it can't take is revs..and like any engine detonation.
BigBlockk
Later.....
Racer
Joined: Sep 2004
Posts: 424
Likes: 2
The down side of turbo's is that they need time to spool up, so they are great for horsepower but don't do much for low end torque. The benefit you get from a 383 is the stroke, even more then cubic inchs. Think of crankshaft throw as a lever, the longer the lever the greater the torque. That is why the LS1 is such a torquey motor,even though it has less cubic inches (346 vs 350) it has a smaller bore diameter and a longer stroke. A 383 gives you a torque advatage through out it's operating range. Try running a Dyno Sim on a 327,350 & 377, all have the same bore diameter but different strokes (3.25, 3.48, 3.75) built the same way they will all put out just about the same HP +/- 5, but then look look at the torque,substantial.
Drifting
Joined: Mar 2003
Posts: 1,608
Likes: 3
From: Canberra AUSTRALIA
St. Jude Donor '05-'06
By the time you bought a new crank (81 is cast and will crack if you boost that motor) then you might as well get a 383 stroker kit. Every turbo/supercharger book I have talks about using a forged crank and forged pistons. You would also probably want some Aluminium heads to help with the detonation/heat problem.
How about a 383 turbo? Now all you have to worry about is shredding tires, breaking driveshafts, gearboxes and half shafts.
How about a 383 turbo? Now all you have to worry about is shredding tires, breaking driveshafts, gearboxes and half shafts.
Instructor
Joined: Feb 2004
Posts: 133
Likes: 0
From: Kaysville Utah
The new turbos have less of the turbo lag problems. To quote Gale Banks "We don't have lag issues anymore, we have tire issues." It's all in how you want to run it. Fast is fast whether you have forced induction or naturally aspirated engines. The nice thing about a turbo for me is it makes up for the "bad air" that we have here in utah. A naturally aspirated engine is more susceptible to altitude and air pressure. An intercooled turbo-charged engine will have the capacity to keep the intake pressure the same thus making the engine consistently strong even at high altitudes.
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