Cam/ Header/ E85 Dyno Results!
Race Director
Joined: Oct 2004
Posts: 12,864
Likes: 4,667
NOTE!!!! IDK if Yank still lists the 'stall ratio' spec, but they did back when I bought mine. Anyway, they advertised stall speeds with different stall ratios. They advertised that the higher the stall ratio, the "tighter" the converter felt. So I bought the 3,200 stall with the highest stall ratio. I don't pretend to know Jack about stall ratio, but I'm sure Yank could explain it. Also, I put the converter in while I still had my 3.15 diff in place. Amazing how much more like stock it felt when I went to the 3.42 gear. The Yank has lived behind 2 different 427 engines, so it's life hasn't been gravy, to say the least......
Last edited by grinder11; Apr 9, 2022 at 04:41 PM.
Le Mans Master
Joined: Dec 2005
Posts: 6,999
Likes: 1,685
From: Southeast TX
In an LS3 on E85, that itty bitty Ghost cam would be another magnitude of good if it was combined with some head milling and a thinner head gasket. You may miss a little hp above 5500 rpm that a bigger cam gives, but it would KILL it everywhere else. Then there's the near perfect driving manners, great efficiency......but, but, but, you don't get that hard lope that some crave. I'll leave that to the kids that don't know better. The cam I'm running is just slightly bigger than that. Very pleased.
Instructor
Joined: Jun 2019
Posts: 189
Likes: 22
30+ HP sounds about right.
I have been doing a lot of reading about using E85, it has a lot of benefits.
The flame speed is greater for E85 so there is more expansion while the piston is on its way down from TDC which results in more power and this is without increasing timing.
E85 contains 30% more oxygen than gasoline so you get more oxygen in the cylinder for the same amount of air. Better burn, more power.
The latent heat of evaporation (how much heat is absorbed when the E85 evaporates) of E85 is 385 BTU/lb. Gasoline is 171 BTU/lb. This results in 40 to 50 degrees of cooling of the charge air which makes it more dense. More charge air for the same cylinder size results in more power. E85 likes to evaporate in the cylinder. Gasoline must be well atomized to change to vapor in time.
I have been doing a lot of reading about using E85, it has a lot of benefits.
The flame speed is greater for E85 so there is more expansion while the piston is on its way down from TDC which results in more power and this is without increasing timing.
E85 contains 30% more oxygen than gasoline so you get more oxygen in the cylinder for the same amount of air. Better burn, more power.
The latent heat of evaporation (how much heat is absorbed when the E85 evaporates) of E85 is 385 BTU/lb. Gasoline is 171 BTU/lb. This results in 40 to 50 degrees of cooling of the charge air which makes it more dense. More charge air for the same cylinder size results in more power. E85 likes to evaporate in the cylinder. Gasoline must be well atomized to change to vapor in time.
Thread Starter
Melting Slicks
Joined: Nov 2006
Posts: 2,001
Likes: 42
From: Ventura, California
In an LS3 on E85, that itty bitty Ghost cam would be another magnitude of good if it was combined with some head milling and a thinner head gasket. You may miss a little hp above 5500 rpm that a bigger cam gives, but it would KILL it everywhere else. Then there's the near perfect driving manners, great efficiency......but, but, but, you don't get that hard lope that some crave. I'll leave that to the kids that don't know better. The cam I'm running is just slightly bigger than that. Very pleased.
Thread Starter
Melting Slicks
Joined: Nov 2006
Posts: 2,001
Likes: 42
From: Ventura, California
Instructor
Joined: Aug 2006
Posts: 193
Likes: 11
From: SoCal
Factory Injectors: nope. Take a look at the GM L9H flex fuel injectors (12609749).
You may get away with the stock pump, but it's marginal. My LS2 (mostly factory) E85 tune started running out of pump at WOT above ~4500 RPM. So for now I'm stuck running a 50/50 mix... a Racetronics 450lph module is on my bench awaiting install .
DSX flex fuel sensor kit install was a breeze.
You may get away with the stock pump, but it's marginal. My LS2 (mostly factory) E85 tune started running out of pump at WOT above ~4500 RPM. So for now I'm stuck running a 50/50 mix... a Racetronics 450lph module is on my bench awaiting install .
DSX flex fuel sensor kit install was a breeze.
Thread Starter
Melting Slicks
Joined: Nov 2006
Posts: 2,001
Likes: 42
From: Ventura, California
Factory Injectors: nope. Take a look at the GM L9H flex fuel injectors (12609749).
You may get away with the stock pump, but it's marginal. My LS2 (mostly factory) E85 tune started running out of pump at WOT above ~4500 RPM. So for now I'm stuck running a 50/50 mix... a Racetronics 450lph module is on my bench awaiting install .
DSX flex fuel sensor kit install was a breeze.
You may get away with the stock pump, but it's marginal. My LS2 (mostly factory) E85 tune started running out of pump at WOT above ~4500 RPM. So for now I'm stuck running a 50/50 mix... a Racetronics 450lph module is on my bench awaiting install .
DSX flex fuel sensor kit install was a breeze.
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Instructor
Joined: Aug 2006
Posts: 193
Likes: 11
From: SoCal
There are several different options with racetronix. The complete module replaces the filter and regulator. Is meant as a complete drop-in.
https://www.racetronix.biz/k/fuel-pu...-e85/tu475-450
https://www.racetronix.biz/k/fuel-pu...-e85/tu475-450
Le Mans Master
Joined: Jul 2010
Posts: 6,012
Likes: 726
You'll never regret that Yank converter! I put in a 3,200 stall Yank in 2004, 65,000 miles ago. Still there, still Yankin'!!
NOTE!!!! IDK if Yank still lists the 'stall ratio' spec, but they did back when I bought mine. Anyway, they advertised stall speeds with different stall ratios. They advertised that the higher the stall ratio, the "tighter" the converter felt. So I bought the 3,200 stall with the highest stall ratio. I don't pretend to know Jack about stall ratio, but I'm sure Yank could explain it. Also, I put the converter in while I still had my 3.15 diff in place. Amazing how much more like stock it felt when I went to the 3.42 gear. The Yank has lived behind 2 different 427 engines, so it's life hasn't been gravy, to say the least......
NOTE!!!! IDK if Yank still lists the 'stall ratio' spec, but they did back when I bought mine. Anyway, they advertised stall speeds with different stall ratios. They advertised that the higher the stall ratio, the "tighter" the converter felt. So I bought the 3,200 stall with the highest stall ratio. I don't pretend to know Jack about stall ratio, but I'm sure Yank could explain it. Also, I put the converter in while I still had my 3.15 diff in place. Amazing how much more like stock it felt when I went to the 3.42 gear. The Yank has lived behind 2 different 427 engines, so it's life hasn't been gravy, to say the least......
" 
. Crying again.
1st Gear
Joined: May 2022
Posts: 1
Likes: 0
Nice numbers! I was curious on the E85 conversion, many increase the fueling across the RPM range 30% to account for the E85.
Is it possible to simply install 30% larger injectors and not having to mess with the fuel maps?
As far as Closed loop of stock 14.7:1 and WOT of 12-13:1 is this having to be turned for? Supposedly E85 has stoicheometry at 9.85:1 instead of 14.7:1 for gasoline.
Is it possible to simply install 30% larger injectors and not having to mess with the fuel maps?
As far as Closed loop of stock 14.7:1 and WOT of 12-13:1 is this having to be turned for? Supposedly E85 has stoicheometry at 9.85:1 instead of 14.7:1 for gasoline.
Pro
Joined: May 2005
Posts: 633
Likes: 19
From: Richmond VA
St. Jude Donor '11, '14,’19
Has anybody tried this $700 product for E85.
https://eflexfuel.com/us/compatibili...e85-conversion
They make it sound easy to install.
Thanks
https://eflexfuel.com/us/compatibili...e85-conversion
They make it sound easy to install.
Thanks