It will be interesting to here what gains you see with with 100% E-85 this year. What fuel pump did you decide to upgrade to?

 

Would an F1A be enough blower to make 1000 rwhp on a lt1? Im assuming that with a decent cubed engine with the 3.4 pulley and no filter would be able to make 25+ psi, but would you be able to hit the mark w/o spray? What do you guys think would be the MINIMUM head flow #'s, cam lift, duration, etc etc...

 

By the looks of it, the F1A wouldn't get you there.

Are you talking M6 or A3 power? You have to make about 300 more hp to get 1000 from an A3 than an M6.

You should probably give up on the supercharger when trying to go over 1000 rwhp. The parasitic losses really pile up and driving the supercharger becomes a real issue.

With a turbocharger, you'd need a PT88 (assuming M6) or PT91 (A3). You can juggle around how much NA versus boost power you want, depending on your personal goals. More power on motor means less boost to reach the goal, but also more money spent. One way to get there would be to decent base motor (383, splayed, all-forged, AFR210 or so, hyd roller cam around 236 intake), which would be good for about 400 rwhp. Then, with a PT88 turbo, you'd need about 23-24 psi boost to make 1000.

Now, say you want to get that on pump gas. You'd build a wicked 396 using 18 deg heads, a single plane intake, and a big solid roller that's 250 duration. If you could manage 500 rwhp on motor then it would only take 16-17 psi to break 1000 rwhp.

Mike

 

damn engineer mike, you really do know your stuff. i wasnt trying to say the LT1 block is weak by any means, so if it came across like that, it wasnt my intention. from my own personal experience, people over bore,get too close to a water jacket and use block fill to fix which just leds to more problems then its worth on a street car as you have mentioned before. kinda a band aid for a broken leg IMO.
my hats off to you dude, its hard to find good info on this type of stuff (aftermarket FI in general) but you usually deliver.

 

Nice to heare.
Fuelpump, i have run 2ext walbro highpressurepumps on 16 volt, this year i will replace one of them widh a aeromotive 11104.

 

I've allways wondered what it would be like to race a 1000+ hp car with a 6 speed.
A nice turbo setup would be ideal, but I just bought the F1A, so im stuck with it

What if I were to go with a 383 like the setup you mentioned, ran 17+ psi from the F1A, then spray it? But I guess I see where you are coming from on the Turbo idea, because spray costs money too..how much N2O? BTW how do you like your blower cam with your turbo setup? Ive got the same one, but with .535 int, .555 exh w/ comp pro magnums (1.6)

 

Give about $25,000 to a good shop.

Rich

 

Way slower than what it could be.

It works well. I swapped it out for a "turbo cam" that was 226/226-114 and lost power so I put the "blower cam" back in it.

Mike

 

25k should do it like rich said.

 

Lisa33-

Been thinking a lot about trying E-85 myself and have a few questions. If I understood you correctly, last year you were using E-85, but not 100%. Wondering what gains you saw when you made the switch? What was the mix of E-85 and gas? When only running E-85, what's the optimum A/F ratio are you looking for when tuning? What size injectors are you using and did they have to be upgraded to larger ones when using 100% E-85? What was the difference in duty cycles? Did you find it necessary to change anything else to be compatible with E-85?

I also race an alcohol injected big block Chevy drag boat and a "old school" roots style blown and alcohol injected big block altered '48 FIAT. Both are making some pretty good power with methanol and I just started thinking the E-85 has some good potential as well. Any information would be appreciated as I would like to try running E-85. Thanks!

This may be one way to get a little closer to the 1000HP mark

 

Ethanol has a lot less hp potential than methanol. The cooling effect is not as pronounced and the energy content of an equivalent mixture is much less. E85 may be one up on gas though, and you can get it at the pump (in certain parts of the country).

Rich

 

We used a 50/50 mix, cant say what the gain was beacuse of a new camshaft and the new chassie also removed the FMIC.
Injectors were 160lbs set to ~135 to compansate for the 50/50 mix, this year i will set the injectos constant to ~115.
Gonna aim for 11-11.4 A/F NOT over 11.5 but im not worried if its gonna drop in mid 10s.
(LM1 set for gasolin)
Have a couple of BMW guys here that claimes that 11.75 gives max power (they are in the 1000hp area) but im not out for the last HP its beter to be "safe".

 

He didnt, it was a customer who bought the kit from them that did it.

 

I remember Jordon Musser built up his 94 Z28 to over the 1000rwhp barrier. I believe it hit 1033rwhp. Don't quote me but I believe it was a single turbo 383, but might have been a 355.

 

isn't xxsaint getting 697rwhp? couldn't he add a 300 shot of spray to that combo & get real close?