PRC H/C numbers and E-85 question
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PRC H/C numbers and E-85 question
My car is an 08 LS3 vette A6 auto
Mods are
PRC 250cc aftermarket casting heads milled to 11.25 to 1 compression
TSP 225/230 114LSA cam
vararam
ported fast 102 NW 102 TB
slp underdrive pulley
LG superpros 1 3/4 no cats and LG GT4 catback
the car was tuned by IPS motorsports on a dynojet and put down
484rwhp and 446rwtq
Im curious how much more power i could gain by switching to E-85. I know it does more for boosted cars then for N/A, but i still think it would gain something. The car is not a dd so i dont care about mpg.
Does anyone have any expierence with E-85 on a heads cam car and how much power it added. I would really like to cross the 500rwhp mark. Is this possible
Thanks for any help
Mods are
PRC 250cc aftermarket casting heads milled to 11.25 to 1 compression
TSP 225/230 114LSA cam
vararam
ported fast 102 NW 102 TB
slp underdrive pulley
LG superpros 1 3/4 no cats and LG GT4 catback
the car was tuned by IPS motorsports on a dynojet and put down
484rwhp and 446rwtq
Im curious how much more power i could gain by switching to E-85. I know it does more for boosted cars then for N/A, but i still think it would gain something. The car is not a dd so i dont care about mpg.
Does anyone have any expierence with E-85 on a heads cam car and how much power it added. I would really like to cross the 500rwhp mark. Is this possible
Thanks for any help
Last edited by AdamC5; 05-31-2012 at 05:03 PM.
#2
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THat's healthy through that A6, for sure. Switch to 1 7/8 ARH or Kooks and you'll pick up 5-10 right there. Port that FAST intake to put you over the top. You could also go with a slightly larger cam, something like Spinmonster's, or have PatG spec you one and get to the same place. Do all of the above and you are well over. I have no personal experience with E85. It will get you there with the proper tune but may limit you down the road. Nice build, regardless! Post some pics and graph!
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the only real gain of E85 is with anything over 12.0.1 compres. you may gain some. I run E85 but have 12.3.1. If it was me i would play more with cam shafts to find the power you want.
Rob
Rob
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i picked the cam because it was small and not everyone can tell it is in there, the same reason my numbers arent posted on my local forum. I dont want a bigger cam. I forgot the fast is ported. I dont have a scanner so i cant put up a graph.
Here is a vid of the car on the dyno
Here is a vid of the car on the dyno
#6
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You need to look into your tune and see how much timing you are running now, and if that is as high as you can go.
When I switched on my current car I was able to go from 24* to 31* which is when it stopped making power, overall it netted me around 15hp but considerably more tq in the midrange as I can run as much timing as I want anywhere on the map without worry of knock
When I switched on my current car I was able to go from 24* to 31* which is when it stopped making power, overall it netted me around 15hp but considerably more tq in the midrange as I can run as much timing as I want anywhere on the map without worry of knock
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I gained 32hp/31tq from E-85 on a cam only LS1. Here is my thread with side by side graphs, Both STD correction, first tuned on 91 then tuned on E-85/injectors:
https://ls1tech.com/forums/dynamomet...415-398-a.html
https://ls1tech.com/forums/dynamomet...415-398-a.html
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Since then I have stepped up to 60# injectors/90mm intake/ and did a 9" rear. My current numbers are in my sig after that but up 7hp down 10 torque from those graphs.
Also no before or after dyno sheet for my friends dads 2007 C6-Z06 but he is just Kooks headers/X-pipe/corsa/blackwing intake, still stock intake manifold and throttlebody did 468/457 on 91 octane with no tuning. After ID-1000 injectors and tuning did 532/470 on E-85
Also no before or after dyno sheet for my friends dads 2007 C6-Z06 but he is just Kooks headers/X-pipe/corsa/blackwing intake, still stock intake manifold and throttlebody did 468/457 on 91 octane with no tuning. After ID-1000 injectors and tuning did 532/470 on E-85