Which of those two will make more power and will be faster? Assuming both with the exact same kit, same boost...

My guess is the B16a would have slighty more hp but the torque of the LS would make the diference in a race....what do u think?

I know now the times of a boosted LS with the search i've made. But didn't really find anything interesting for SI's....what are the times/hp/torque for the SI's under boost?

 

Both motors in the same chassis, with the same turbo setup at the same boost levels, I say B18B wins but closley..

 

gearing becomes a big part of the race....SI's gearing is going to run throughh sooo FAST!!!! and the LS is just going to be more powerful! i've seen a buncha LS's with 220hp and 200lb torque at 8psi...

if the SI can get a good launch it can win....(its hard because of the short gearing and power of the turbo)

all the 1/4 mile times are similiar to all the cars.....with a t4/t3 it'll get 13's at low psi...

true that the Si would get more hp, just cause its a better flowing head.
from.....clubriceI.com
Drag3 kit
Peak HP: 234.3
Peak TQ: 170.9



not too much torque

 

back when i had a manual boost controller I raced a rev hard SI when I was at 8psi on the freeway. I didn't take him down bad, but i definatly had more power then he did. I asked him how much boost he had and he said "i dont know, i only know bar and my car is 2 bar". obviously he wasnt running nearly 30psi so I have no idea how much he was pushing, but whatever it was it wasn't enough to pass me. you can check my bio for my mods.

 

The Si will make a few extra peak horsepower but the LS will have an extra 30 lbs of torque. Considering gearing and drivability LS will probably win.. but you have to remember you can always run more boost on an LS then an Si.. So stock for stock LS gets a nice advantage..

 

Pretty hard to get a good launch on a SI tho...with that short of gearing you get nothing but wheelspin.

 

i'd say the LS would win. The LS has longer gearing which allows it to stay in boost longer whereas the Si is peaky with it's short gears.

 

Chalk up another vote for the LS.

 

Ls's are cool.....ls is my vote

 

LS of course... why ask?

 

ls have longer ratio gears yeah!! but rev 7krpm so the si rev 8 k but has shorter gearing
i woul say ls win in 0'60 but si will win on highway
pretty sure on this

 

mikvtec: i think the 1.8 of displacement will win over the 1.6 of the si.

Even with the longer gears, i think the boost would be fine with the long gears so the ls would still be faster than the si on the highway.....right?


[Modified by xxplosif1, 5:03 AM 12/31/2001]

 

LS, more displacement = more torque = better launch.

The turbo will also respond better to higher displacement.

 

hey xxplosif wazzup
well i think that 1.6doch has a bit more hp then the ls but 1.8 is more thorquy
true on this?
i bet the si win on trap speep but ls will win on 1/4
but there will be very close

 

just to throw this in,

put an LS tranny on the Si and the Si will win everytime

 

....yeah but put a gsr or sir tranny on a N/A LS and you know what happen. But thanks guys, i've had good answers!

 

My bet is my past experience on beating both a turbo gsr and a boosted LS...we were all on 8psi...all very very close runs ...w/ in a couple of tenths 13.8 to 14.0 13.6 13.8 stuff like that..only like 1-2 mph difference in the b18b as opposed to gsr and si..not much difference at all..

 

what i seem to understand, is the more you boost on the LS the more the tranny will like it....and will be more effective. But with regular boost (6-10 psi), the gsr and sir tranny can do the work...very well.

I bet the LS had a better 60' then the two others though. But like you said, there is probably a difference but not much.

 

Si will win!
same boost etc.

 

13.00 and up si will work well
12.00 and up gsr work well
ls is good for heavy fi
but dont put si or gsr gears on ls when fi this is only good for n/a
does number are my experience
i have a b18c5 fi,had the ls and the gsr whit nos i know what im saying
maybe a guru can tell his experience