[Camaro1973]

Originally Posted by CW3SF

Sorry, I didn’t think to ask that. He does all their runs in SAE. My last run before these mods was 650 SAE on same dyno so 64 whp gain.

Good gains. Dynojets do a very good job with correction. So your much closer to what it would actually make if dynoed at sea level then you think.

Uncorrected would of given you actual power at your elevation and weather.

[KamZL1]

So i know you don't want to do a pulley because of primarily track usage, but lets just say you did, and drop e content to e60, is it really possible to have a car making more than 715 without a lowside fuel system? (I'm assuming the JMS is on the absolute limit currently with your build)

[CW3SF]

Originally Posted by KingLT1

Nice numbers!

Sans my reasoning behind pushing to upgrade the high side. +50whp for 3600.00 to upgrade the high side is still less then a cam kit installed for similar but more consistent gains. Upgrading the high side is also fairly straightforward so the average car guy can install. Installing a cam is not... so most will farm that work out.

Thx, Good points. The injectors were very easy to do also, since everything that’s in the way is already removed.

[KamZL1]

Originally Posted by KingLT1

Nice numbers!

Sans my reasoning behind pushing to upgrade the high side. +50whp for 3600.00 to upgrade the high side is still less then a cam kit installed for similar but more consistent gains. Upgrading the high side is also fairly straightforward so the average car guy can install. Installing a cam is not... so most will farm that work out.

3600? for big bore and 30's? since when

[KingLT1]

Originally Posted by KamZL1

3600? for big bore and 30's? since when

Since knowing where to shop.

I bought my XDI +30's for 1900.00

Bought my LPE HPFP for 1550.00

Fuel lines were about 150.00

Originally Posted by KamZL1

So i know you don't want to do a pulley because of primarily track usage, but lets just say you did, and drop e content to e60, is it really possible to have a car making more than 715 without a lowside fuel system? (I'm assuming the JMS is on the absolute limit currently with your build)

This is kind of hard to predict because he is in high elevation so the correction factor is predicting what the car would make @ sea level. The dyno does not factor in increased fuel demand.

That being said my guess is he should still be able to run E70+ @ sea level since we are running E60 with plenty of headroom on my brothers ZL1 @ 13.5psi of boost in 55 degree weather @ 1000 DA.

Pretty much same mods as OP but Kong standard port with a 2.17 pulley.

https://www.camaro6.com/forums/showp...3&postcount=34

[CW3SF]

Originally Posted by KamZL1

3600? for big bore and 30's? since when

XDI sells both as a pkg for $4299

[JSH]

LPE BB $1875+
XDI +30 $2500+

[CW3SF]

Originally Posted by KamZL1

So i know you don't want to do a pulley because of primarily track usage, but lets just say you did, and drop e content to e60, is it really possible to have a car making more than 715 without a lowside fuel system? (I'm assuming the JMS is on the absolute limit currently with your build)

My tuner said that my low side is good and my limiting factor is still the high side. He recommends a cam with fuel lobe next for the high side. You can see in my graph the HP was still climbing at or flat at the top.

[KamZL1]

Originally Posted by KingLT1

Since knowing where to shop.

I bought my XDI +30's for 1900.00

Bought my LPE HPFP for 1550.00

Fuel lines were about 150.00




This is kind of hard to predict because he is in high elevation so the correction factor is predicting what the car would make @ sea level. The dyno does not factor in increased fuel demand.

That being said my guess is he should still be able to run E70+ @ sea level since we are running E60 with plenty of headroom on my brothers ZL1 @ 13.5psi of boost in 55 degree weather @ 1000 DA.

Pretty much same mods as OP but Kong standard port with a 2.17 pulley.

https://www.camaro6.com/forums/showp...3&postcount=34

I guess what im asking is are you going to see more from coming down a little bit on content and making more boost rather than full e in the same setup he has now

[KamZL1]

Originally Posted by CW3SF

My tuner said that my low side is good and my limiting factor is still the high side. He recommends a cam with fuel lobe next for the high side. You can see in my graph the HP was still climbing at or flat at the top.

Jesus really?! the booster that could

[KingLT1]

Originally Posted by CW3SF

My tuner said that my low side is good and my limiting factor is still the high side. He recommends a cam with fuel lobe next for the high side. You can see in my graph the HP was still climbing at or flat at the top.

That is what I see as well. LT4 pump with JMS booster actually will go a long ways when running LT1 rail pressure instead of LT4. The 2900+ psi LT4 rail pressure is what really puts strain on the low side.

[JSH]

Originally Posted by KingLT1

This is kind of hard to predict because he is in high elevation so the correction factor is predicting what the car would make @ sea level. The dyno does not factor in increased fuel demand.

Do your dyno charts show the CF? I know you can see it on Dyno Jet's PowerCore or WinPEP config or calibration.

Here's the built-in formula (although this one has been updated to 2011, I believe):



I used 90F IAT and 24.02 pressure yesterday

[KingLT1]

Originally Posted by KamZL1

I guess what im asking is are you going to see more from coming down a little bit on content and making more boost rather than full e in the same setup he has now

On a stock compression LT4 E60 is all the octane that is needed for 99% of the builds. You would make more power on E60 with more boost vs less boost and more E in this situation.

My car for example was faster on E40 with 10psi vs 8 psi and E65.

The OP could easily increase boost and drop E with the X port and make a bit more power efficiently imo.

[CW3SF]

Originally Posted by KingLT1

On a stock compression LT4 E60 is all the octane that is needed for 99% of the builds. You would make more power on E60 with more boost vs less boost and more E in this situation.

My car for example was faster on E40 with 10psi vs 8 psi and E65.

The OP could easily increase boost and drop E with the X port and make a bit more power efficiently imo.

Interesting. That’s good to know. The rub will be not increasing heat too much.