The big Horsepower question!!
Member
Posts like a V-Tak
Joined: Oct 2003
Posts: 45
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From: Las Vegas, NV
Sol, that is perfect!! 
Are we talking HP to the wheels or HP at the crank?
I will say around the 300'* on his and possibly around the high 300'* to low 400'* on yours. (At the wheels)
Are we talking HP to the wheels or HP at the crank?
I will say around the 300'* on his and possibly around the high 300'* to low 400'* on yours. (At the wheels)
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Posts: n/a
ok, i have been patient lol.
here is my theory on air flow.
no matter how much you port and polish the heads, lower intake ect. you are still limited to what HP you can produce due to the size of the throttle plate.
for example: a winston cup car makes aprox 700 HP. now they take that same motor to daytona and add a restictor plate under the carb, and now its working to get 450HP out of the same motor.
so just remember, the engine in the sig. still has a 58mm TB(stock 93) and the example motor has a 70mm TB and a 70mm SC inlet.
and yes, the motor we are looking at has colder plugs too.(3 heat ranges)
here is my theory on air flow.
no matter how much you port and polish the heads, lower intake ect. you are still limited to what HP you can produce due to the size of the throttle plate.
for example: a winston cup car makes aprox 700 HP. now they take that same motor to daytona and add a restictor plate under the carb, and now its working to get 450HP out of the same motor.
so just remember, the engine in the sig. still has a 58mm TB(stock 93) and the example motor has a 70mm TB and a 70mm SC inlet.
and yes, the motor we are looking at has colder plugs too.(3 heat ranges)
Senior Member
True Car Nut
Joined: May 2003
Posts: 3,022
Likes: 1
From: Holt, MI & Lima, OH
I wasn't going to reply to this, mostly because I have exams at school this week and I don't have time, but I recieved a PM requesting nicely for me to give my thoughts, so here are my thoughts.
I don't know if you want power estimates without nitrous, or with nitrous, so I will just give you my estimates without nitrous and you can add it in since that should be a fairly simple thing to do. I do not feel that I am familiar enough with the Series I L67 to be confident on my estimates. I am going to assume that it is just like a Series II, only with a blower that doesn't move quite as much air.
Going through all of your mods, I would have to guess that without the nitrous it is making right around 310-320 horsepower and 360 ft.lbs torque at the crank. I am sure that with some work here and there (especially ported exhaust manifolds or headers) and some tuning you could probably get it up to 350hp or so, but because of the small supercharger, and the pushrod 3.8L, it would be difficult to make much more power than that because the blower and engine combination just simply wouldn't flow enough air for it. That is my opinion on it.
Shawn
I don't know if you want power estimates without nitrous, or with nitrous, so I will just give you my estimates without nitrous and you can add it in since that should be a fairly simple thing to do. I do not feel that I am familiar enough with the Series I L67 to be confident on my estimates. I am going to assume that it is just like a Series II, only with a blower that doesn't move quite as much air.
Going through all of your mods, I would have to guess that without the nitrous it is making right around 310-320 horsepower and 360 ft.lbs torque at the crank. I am sure that with some work here and there (especially ported exhaust manifolds or headers) and some tuning you could probably get it up to 350hp or so, but because of the small supercharger, and the pushrod 3.8L, it would be difficult to make much more power than that because the blower and engine combination just simply wouldn't flow enough air for it. That is my opinion on it.
Shawn
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