D1 408 questions
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From: Pittsburgh!!!!!!!! Pa
D1 408 questions how many are running 402/408 setups with a D1? what heads are you running, what size exhaust are you running, what numbers are you putting down, mpg your getting, gearing, and times if possible
im trying to get an idea if a D1 is right for me.
im trying to get an idea if a D1 is right for me.
I have a 408 with a D1SC. Made 757 RWHP on a 3.85 pulley, 13-14 psi. Dart heads (ported), 3" true dual exhaust with long tubes, 3.73 rear end.
Mileage? Terrible, but I drive 99% in town and have a tendency to get into boost every so often.
My car weighs 3900 with me in it, made one very soft pass at 10.42@135. I didn't go WOT until late 2nd gear (though it would spin). Traction on the street is non-existent, and I run 325/50/15 MT DR's all the time. They break lose at 6-8 lbs of boost, which might take just over half throttle.
Some guys will tell you a D1 is too small for a 408, its not. An F1 will make more power, but the D1 will work just fine.
Mileage? Terrible, but I drive 99% in town and have a tendency to get into boost every so often.
My car weighs 3900 with me in it, made one very soft pass at 10.42@135. I didn't go WOT until late 2nd gear (though it would spin). Traction on the street is non-existent, and I run 325/50/15 MT DR's all the time. They break lose at 6-8 lbs of boost, which might take just over half throttle.
Some guys will tell you a D1 is too small for a 408, its not. An F1 will make more power, but the D1 will work just fine.
Thread Starter
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iTrader: (7)
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From: Pittsburgh!!!!!!!! Pa
Originally Posted by TS6
I have a 408 with a D1SC. Made 757 RWHP on a 3.85 pulley, 13-14 psi. Dart heads (ported), 3" true dual exhaust with long tubes, 3.73 rear end.
Mileage? Terrible, but I drive 99% in town and have a tendency to get into boost every so often.
My car weighs 3900 with me in it, made one very soft pass at 10.42@135. I didn't go WOT until late 2nd gear (though it would spin). Traction on the street is non-existent, and I run 325/50/15 MT DR's all the time. They break lose at 6-8 lbs of boost, which might take just over half throttle.
Some guys will tell you a D1 is too small for a 408, its not. An F1 will make more power, but the D1 will work just fine.
Mileage? Terrible, but I drive 99% in town and have a tendency to get into boost every so often.
My car weighs 3900 with me in it, made one very soft pass at 10.42@135. I didn't go WOT until late 2nd gear (though it would spin). Traction on the street is non-existent, and I run 325/50/15 MT DR's all the time. They break lose at 6-8 lbs of boost, which might take just over half throttle.
Some guys will tell you a D1 is too small for a 408, its not. An F1 will make more power, but the D1 will work just fine.
I jsut picked up a 408 and will be putting my D1 on it. The guy before me said he had a 408 running ported LS6 heads and intake at first and made 630rwhp on only 7.5psi, it was a turbo but get the point. He also said when he upgraded to AFR heads he got about 18 miles per gallon, and said he got about 4-5 better with the LS6's. All depends on how you drive. He also said it was his daily driver and didn't change a thing with cooling and it never had a problem. I can't wait 
8.2-1 comp
ET 225 heads
234/238 Cam
Carb intake
D1 at 14lbs made 760hp/725tq through a M-6.
This engine was built for twin turbo's but we used the old D1 instead.Compression should really be 9.5-1 for a D1 which should put it well past 800rwhp.
We really like ET heads for FI.
ET 225 heads
234/238 Cam
Carb intake
D1 at 14lbs made 760hp/725tq through a M-6.
This engine was built for twin turbo's but we used the old D1 instead.Compression should really be 9.5-1 for a D1 which should put it well past 800rwhp.
We really like ET heads for FI.
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I have just a few hundred miles on mine, I don't DD it or anything. I could drive it every day if I wanted, the only bad thing is the mileage and I took out the A/C. Otherwise its totally streetable and tame.
When I made 757 RWHP it was through an A4, 12 bolt, and with big MT's on back. 93 octane, no meth.
When I made 757 RWHP it was through an A4, 12 bolt, and with big MT's on back. 93 octane, no meth.
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I would be interested in your guys fuel setup also. I will be doing this setup with a 402 and the small afr's but Im hoping for at least 650-700 on a low boost.
Sorry I wasnt trying to steal a thread.
Sorry I wasnt trying to steal a thread.
Big magnafuel pump, -8 lines, magnafuel regulator, aeromotive rails, 65 or 75 lb injectors (can't remember), sheet metal fuel cell from Behind Bars race cars.
I plan to put some spray on this at some point......
I plan to put some spray on this at some point......
