What gains going to D1SC over P1SC, and F1 over that, at 10 psi/364 cid
01-14-2005, 03:52 PM
#1
What gains going to D1SC over P1SC, and F1 over that, at 10 psi/364 cid Have a truck on the P1SC headunit at 10 psi, 6,000 rpm thru the traps.
traps 115 right now, what kind of gains would you think? Anyone back to back some headunits?
Id like to stick with the stock bracket setup for now, but the F1 headunit will go on that correct? Only problem I can see is clearence with other stuff.
Not looking for anymore low end power
just more power 4500 to 6500. Might have to look into changing crank pulley to get the blower rpm where it needs to be, but no biggy
traps 115 right now, what kind of gains would you think? Anyone back to back some headunits?
Id like to stick with the stock bracket setup for now, but the F1 headunit will go on that correct? Only problem I can see is clearence with other stuff.
Not looking for anymore low end power
just more power 4500 to 6500. Might have to look into changing crank pulley to get the blower rpm where it needs to be, but no biggy 
01-15-2005, 01:06 AM
#5
so with your auto/heads/cam 370 inch motor it made 450 rw, then you put the F1 on it same pulley and made 15 psi and 660? Same everything else? 4 psi only account for 70-95 of that 210 rwhp gained, that impressive. That cam sounds like a sissy in that 370 inch motor does it not? I need to pick out a cam for this truck Im working with, any input is appreciated. What kind of rpm do you turn, shift at
What do you mean transmission is thicker? Like the spacing would remain the same, but if you had something bolted front and back, it would spread out?
This truck is for racing 90%, Im leaning towards stepping right up to the F1 right now and skipping the middle stepping stone.
What do you mean transmission is thicker? Like the spacing would remain the same, but if you had something bolted front and back, it would spread out?
This truck is for racing 90%, Im leaning towards stepping right up to the F1 right now and skipping the middle stepping stone.
01-15-2005, 01:15 AM
#6
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Originally Posted by GrannySShifting
This truck is for racing 90%, Im leaning towards stepping right up to the F1 right now and skipping the middle stepping stone.
Sounds like you need the F1 then...
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01-15-2005, 03:54 PM
#10
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a guy in the turck forums has a f1r on his silvy with a 408 had some brackets made and siad he can easily reproduce them might want to check them out....https://ls1tech.com/forums/showthrea...ght=2toneblown
01-15-2005, 10:29 PM
#11
Originally Posted by bigbadblackws6
buy an f-body
and still haul his busted 4L60E **** to the dump So the cam prolly accounted for 40 hp of that correct? Hows the curve peak, what rpm
09-29-2011, 07:00 AM
#15
I'm bringing this back from the dead because I got the same question as the OP but my question is on a stock LS1. Wanting to make 8-10psi. Basically what is a D1SC going to do over the P1SC in the 8-10psi range? Would the power band "feel" different between the two?
09-29-2011, 09:31 AM
#16
Guys with more experience correct me if I'm wrong, but 10 psi on an engine (assuming iat's and everything else is the same) will make the same power no matter what blower you have on there. actually the smaller blower might make more power because of less parasitic loss.
Reason being is boost is more engine dependent. Meaning 10 psi of air is the same flow no matter what size blower is going on there. However if you modify the engine to accept more airflow, then you will need more air to reach the same 10psi level and that is how you make more power. Thus the larger blowers make more power by either making more psi, or by blowing the same pressure but into an engine that accepts more cfm. Such as a 408 will take a lot more cfm to make 10 psi then a 347 motor would.
The only other way (everything being equal) that a larger blower would make more power is that you spin it much slower and create less heat.
Reason being is boost is more engine dependent. Meaning 10 psi of air is the same flow no matter what size blower is going on there. However if you modify the engine to accept more airflow, then you will need more air to reach the same 10psi level and that is how you make more power. Thus the larger blowers make more power by either making more psi, or by blowing the same pressure but into an engine that accepts more cfm. Such as a 408 will take a lot more cfm to make 10 psi then a 347 motor would.
The only other way (everything being equal) that a larger blower would make more power is that you spin it much slower and create less heat.
09-29-2011, 04:17 PM
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Guys with more experience correct me if I'm wrong, but 10 psi on an engine (assuming iat's and everything else is the same) will make the same power no matter what blower you have on there. actually the smaller blower might make more power because of less parasitic loss.
Reason being is boost is more engine dependent. Meaning 10 psi of air is the same flow no matter what size blower is going on there. However if you modify the engine to accept more airflow, then you will need more air to reach the same 10psi level and that is how you make more power. Thus the larger blowers make more power by either making more psi, or by blowing the same pressure but into an engine that accepts more cfm. Such as a 408 will take a lot more cfm to make 10 psi then a 347 motor would.
The only other way (everything being equal) that a larger blower would make more power is that you spin it much slower and create less heat.
Reason being is boost is more engine dependent. Meaning 10 psi of air is the same flow no matter what size blower is going on there. However if you modify the engine to accept more airflow, then you will need more air to reach the same 10psi level and that is how you make more power. Thus the larger blowers make more power by either making more psi, or by blowing the same pressure but into an engine that accepts more cfm. Such as a 408 will take a lot more cfm to make 10 psi then a 347 motor would.
The only other way (everything being equal) that a larger blower would make more power is that you spin it much slower and create less heat.
09-29-2011, 08:41 PM
#18
Guys with more experience correct me if I'm wrong, but 10 psi on an engine (assuming iat's and everything else is the same) will make the same power no matter what blower you have on there. actually the smaller blower might make more power because of less parasitic loss.
Reason being is boost is more engine dependent. Meaning 10 psi of air is the same flow no matter what size blower is going on there. However if you modify the engine to accept more airflow, then you will need more air to reach the same 10psi level and that is how you make more power. Thus the larger blowers make more power by either making more psi, or by blowing the same pressure but into an engine that accepts more cfm. Such as a 408 will take a lot more cfm to make 10 psi then a 347 motor would.
The only other way (everything being equal) that a larger blower would make more power is that you spin it much slower and create less heat.
Reason being is boost is more engine dependent. Meaning 10 psi of air is the same flow no matter what size blower is going on there. However if you modify the engine to accept more airflow, then you will need more air to reach the same 10psi level and that is how you make more power. Thus the larger blowers make more power by either making more psi, or by blowing the same pressure but into an engine that accepts more cfm. Such as a 408 will take a lot more cfm to make 10 psi then a 347 motor would.
The only other way (everything being equal) that a larger blower would make more power is that you spin it much slower and create less heat.
09-29-2011, 09:11 PM
#19
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Guys with more experience correct me if I'm wrong, but 10 psi on an engine (assuming iat's and everything else is the same) will make the same power no matter what blower you have on there. actually the smaller blower might make more power because of less parasitic loss.
Reason being is boost is more engine dependent. Meaning 10 psi of air is the same flow no matter what size blower is going on there. However if you modify the engine to accept more airflow, then you will need more air to reach the same 10psi level and that is how you make more power. Thus the larger blowers make more power by either making more psi, or by blowing the same pressure but into an engine that accepts more cfm. Such as a 408 will take a lot more cfm to make 10 psi then a 347 motor would.
The only other way (everything being equal) that a larger blower would make more power is that you spin it much slower and create less heat.
Reason being is boost is more engine dependent. Meaning 10 psi of air is the same flow no matter what size blower is going on there. However if you modify the engine to accept more airflow, then you will need more air to reach the same 10psi level and that is how you make more power. Thus the larger blowers make more power by either making more psi, or by blowing the same pressure but into an engine that accepts more cfm. Such as a 408 will take a lot more cfm to make 10 psi then a 347 motor would.
The only other way (everything being equal) that a larger blower would make more power is that you spin it much slower and create less heat.
WAYYY OFF!
You have the correct thought process but you are absolutely wrong about the 10psi is 10psi...
Think about it this way... My buddy has a Turbo Civic that made 403fwhp at 16psi on a GT3071R Turbo...
He decided to upgrade, he didnt change ANYTHING ELSE, literally, but the turbo and of course got it re-tuned with a GT42R, and made 542fwhp at 14psi... So on 2 LESS psi of boost it made 139 more whp at the front wheels.
Pressure is RESTRICTION.
CFM is FLOW.
There is also a Turbo 03/04 Cobra running around that made something absolutely STUPID insane whp number on 3-4 psi of boost.
I forgot the motor/turbo combo but it was like 750rwhp at 3-4psi boost. Yes... 3-4psi!!!
His OLD kennebell set-up made 550whp at like 13-15psi of boost.
I can keep going on and on with examples but im sure you get the idea...
Boost pressure DOES NOT equal flow.
CFM is flow.
If boost pressure equaled flow why wouldn't there be just 1 "universally sized" turbo for ALL cars and engines... think about it...
09-29-2011, 09:40 PM
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WTF? Um no.
WAYYY OFF!
You have the correct thought process but you are absolutely wrong about the 10psi is 10psi...
Think about it this way... My buddy has a Turbo Civic that made 403fwhp at 16psi on a GT3071R Turbo...
He decided to upgrade, he didnt change ANYTHING ELSE, literally, but the turbo and of course got it re-tuned with a GT42R, and made 542fwhp at 14psi... So on 2 LESS psi of boost it made 139 more whp at the front wheels.
WAYYY OFF!
You have the correct thought process but you are absolutely wrong about the 10psi is 10psi...
Think about it this way... My buddy has a Turbo Civic that made 403fwhp at 16psi on a GT3071R Turbo...
He decided to upgrade, he didnt change ANYTHING ELSE, literally, but the turbo and of course got it re-tuned with a GT42R, and made 542fwhp at 14psi... So on 2 LESS psi of boost it made 139 more whp at the front wheels.