a little turbo info
03-31-2004, 05:42 PM
#1
a little turbo info
got this from seth today, i hope he dont mind me sharing but i told him i share everything so here it is.
----------------------------------------------------------------------------------------------
So, rolled the truck with the new downpipe and cam, converter and stuff to
have the back of the exhaust welded on, didn't get on the gas hard and had
boost set at 8psi. At 69% throttle at 4200 rpm I saw 449gms/sec.
The
new cam should spin to around 6800 or so...whacha think
----------------------------------------------------------------------------------------------
from my calculations that is around 61lb's of air
at 4200rpm on a 5.3
someone corect me if i have some of the numbers wrong, to put this into perspective i have some numbers from my last trip to the dyno.
37.7lb's of air at 6500rpm, rule of thum puts that at 37.7 x 11 = 414 fwhp, the dyno showed 325rwhp.
using his numbers 61'b's at 4200, 61 x 10 = 610fwhp , not sure how much or if the air flow would go up with higher rpms. to me that sounds like a solid 150rwhp over what i am making now and he has a 5.3 , he may not have even been up to full boost yet.
i also got charged for the rest of the kit today so i assume it is really on the way
i have seen rule of thumb numbers of 11hp/lb of air for NA and 10hp/lb for boosted, that is how i came up with those numbers.
----------------------------------------------------------------------------------------------
So, rolled the truck with the new downpipe and cam, converter and stuff to
have the back of the exhaust welded on, didn't get on the gas hard and had
boost set at 8psi. At 69% throttle at 4200 rpm I saw 449gms/sec.
Thenew cam should spin to around 6800 or so...whacha think
----------------------------------------------------------------------------------------------
from my calculations that is around 61lb's of air
at 4200rpm on a 5.3 someone corect me if i have some of the numbers wrong, to put this into perspective i have some numbers from my last trip to the dyno.
37.7lb's of air at 6500rpm, rule of thum puts that at 37.7 x 11 = 414 fwhp, the dyno showed 325rwhp.
using his numbers 61'b's at 4200, 61 x 10 = 610fwhp
, not sure how much or if the air flow would go up with higher rpms. to me that sounds like a solid 150rwhp over what i am making now and he has a 5.3 , he may not have even been up to full boost yet. i also got charged for the rest of the kit today so i assume it is really on the way
i have seen rule of thumb numbers of 11hp/lb of air for NA and 10hp/lb for boosted, that is how i came up with those numbers.
03-31-2004, 06:10 PM
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Originally Posted by parish8
got this from seth today, i hope he dont mind me sharing but i told him i share everything so here it is.
----------------------------------------------------------------------------------------------
So, rolled the truck with the new downpipe and cam, converter and stuff to
have the back of the exhaust welded on, didn't get on the gas hard and had
boost set at 8psi. At 69% throttle at 4200 rpm I saw 449gms/sec. The
new cam should spin to around 6800 or so...whacha think
----------------------------------------------------------------------------------------------
from my calculations that is around 61lb's of air at 4200rpm on a 5.3
someone corect me if i have some of the numbers wrong, to put this into perspective i have some numbers from my last trip to the dyno.
37.7lb's of air at 6500rpm, rule of thum puts that at 37.7 x 11 = 414 fwhp, the dyno showed 325rwhp.
using his numbers 61'b's at 4200, 61 x 10 = 610fwhp , not sure how much or if the air flow would go up with higher rpms. to me that sounds like a solid 150rwhp over what i am making now and he has a 5.3 , he may not have even been up to full boost yet.
i also got charged for the rest of the kit today so i assume it is really on the way
i have seen rule of thumb numbers of 11hp/lb of air for NA and 10hp/lb for boosted, that is how i came up with those numbers.
----------------------------------------------------------------------------------------------
So, rolled the truck with the new downpipe and cam, converter and stuff to
have the back of the exhaust welded on, didn't get on the gas hard and had
boost set at 8psi. At 69% throttle at 4200 rpm I saw 449gms/sec.
Thenew cam should spin to around 6800 or so...whacha think
----------------------------------------------------------------------------------------------
from my calculations that is around 61lb's of air
at 4200rpm on a 5.3 someone corect me if i have some of the numbers wrong, to put this into perspective i have some numbers from my last trip to the dyno.
37.7lb's of air at 6500rpm, rule of thum puts that at 37.7 x 11 = 414 fwhp, the dyno showed 325rwhp.
using his numbers 61'b's at 4200, 61 x 10 = 610fwhp
, not sure how much or if the air flow would go up with higher rpms. to me that sounds like a solid 150rwhp over what i am making now and he has a 5.3 , he may not have even been up to full boost yet. i also got charged for the rest of the kit today so i assume it is really on the way
i have seen rule of thumb numbers of 11hp/lb of air for NA and 10hp/lb for boosted, that is how i came up with those numbers.
Thats alot of air!!!
I wish I had a setup like that at my altitude. Turn up the boost with a **** instead of F-ing with smaller pullies and belt slip!
I can't wait for results.
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