CUR4VNM

iTrader: (10)

I had a mishap in my all motor 416 last night and might have messed my cam up. If I did and need to replace it I was debating on changing out to a blower cam and purchasing a big blower f1r/f2 maybe a Ysi?!

So here's my question my motor currently has 11.8 comp running on pump gas can I do a high compression blower build and just switch to e85?

How much power can I throw at this block? It's a fresh motor maybe 2,000 miles on it but I just bought a trailer and going much more extreme wouldn't hurt. Trying to keep weight down so not trying to go back to an iron block. Can I make 1,000+ rwhp?

Thanks for any help in advance

Blown06

iTrader: (32)

It's gonna be tough on pump gas/e85, especially if you go the F2 route. To get 1000 to the tire with an F2, you'll have to spin it hard enough that the blower alone is gonna soak up about 250 horsepower. So, if you factor in drivetrain loss you'll probably need around 1200 horsepower at the crank. Then add in the 250 horsepower that you won't see to spin the blower and you're looking at an engine combo that needs to support at least 1450 horsepower. A reliable 1450 horse out of a 4 bolt ls motor is a lot with methanol.......even crazier with race gas......and pretty much down right off the charts using pump gas/e85.

Can it be done, maybe, but your parts and tune up is gonna have to be damn near perfect.

The last engine combo I had in the truck was an iron 408 with an F2 procharger and using C16 fuel and a Precision PT2000 A2W intercooler. It was at or a little over 1000 rwhp and I only got about 40 passes out of it before it completely trashed the head gaskets. It was partly my fault as I was getting greedy with the timing trying to do it at a lower boost level.....the problem was that every time I added another degree of timing it would pick up mph. Upon tear down and reading plugs I never had a detonation issue...it was just simply flexing the heads enough with all that timing in it that it just wasn't happy.

The turbo guys will be along in a minute to talk **** about how easy it is to get there.......but what they don't realize or see is that 250 horsepower it takes to spin the blower.

stevieturbo

The power bit is easy, how long it will live for with high CR is another matter, and are your pistons designed with boost in mind ?
Nor do you specify anything else about that block/engine and how it is put together.

YSi will easily make 1k+ reliably, as will some of the F1 blowers, dont really see any need to for F2

Of course when you say 1000+, does that mean like 1001, or 1999 ?

CUR4VNM

iTrader: (10)

Sorry it's in my sig so I left that info out. It's an Ls3 block with Callie's internals built for NA and 250 shot of nitrous. TFS 245 heads and no the Pistons aren't designed for boost specifically. I'm unsure of the damage to my motor with what happened just trying to get some posts out there and interested in changing it up a bit. I have no clue how much power a ls3 block can hold and this doesn't have to be max effort this second but if any of those 3 blowers listed will work or even the F1x that's what I'd like to get started to get it on the road.

I'd like to get as much power safely on this 416 and maybe in a year or so get a different boost specific motor built. Just looking to buy one blower and change the gas up to allow for the higher comp. I have a fully built 6speed, built rear etc etc suspensions all there with AFCO DA coil over on all 4 corners.

So anywhere between 1001-1999 sounds perfect lol

stevieturbo

Yes but your LS3 block will easily do 1001 without worry...it most certainly will not do 1999.

Hence it is kind of important. And whilst the Ysi will do 1k+ with ease...it will not do 1999.

F1x....might get closer and would be a bit overkill for just 1001.

ie select something in a sensible size for your needs.

And then you need to be able to get a kit that will actually work on your vehicle, with a good belt drive etc. An F1X is huge...would it even fit ? YSi is relatively compact..do Vortech or others make a good bracket/belt system for it ?

Prochargers claims that the F1X does 1300hp max....I think are them telling a few fibs. Some of their smaller F1's would be ideal though. F1C/10.5 ? F1R ?

But find out who makes the best bracket and belt drive system for any blower that might fit your car. For that sort of power, I'd be wanting a 10 or 12 rib and a very good spring tensioner setup.

If they're Nitrous pistons, good chance they'll be ok with boost too.

ajrothm

Way too much compression for pump/meth... MAYBE E85/meth would work assuming everything is perfect, all the time, which in my experience is NEVER the case. Is it possible to make the power? for sure, will it live, not likely. Blown06 is right about the blower parasitics...people always forget to factor that in, especially on the F series blowers. It takes 250hp to run an F1R at max impeller speed at 20+ psi restriction, an F2 is over 300hp.. You better have a damn good crank in it and not some Compstar junk. I think a YSI is your best bet to make 1k and require less HP production to get there.

You are about to go down a very expensive path that always sounds like a good/fun idea in the beginning. Hopefully you have some good jack stands and a fat check book, as you'll be using both, a lot.

In before everyone posts how easy it is to make 1krwhp and live forever with a junkyard 5.3.

tvanlant

iTrader: (4)

I would look into the F1A-94. It will make your desired power when spun to its max, much less drive power vs an F1R, and still a small compact size. This blower guys use in Ultra Street, and has already been 4.70s, so it definitely has the potential!

I like my F1R, but would love to have an F1A-94. The R takes a lot to drive it, and creates quite a bit of heat compared to an A

JoeNova

There is a guy here that ran 12.5:1 and 20+ PSI on E85 on a Frankenstein LS.
I've ran 13:1 and 18 PSI with E85 on a 4-cylinder.

Just make sure you're running E85 and test it often, and add a couple of 100% meth sprayers. You'll be fine.

Bob@BruteSpeed

iTrader: (16)

I agree, an F-1A-94 would work well for this combination. Bob

Bob@BruteSpeed

iTrader: (16)

F-1A-94 = New F-1A w/ 3.70 new design impeller, new 9” volute. Bob

WantSOM

iTrader: (2)

i have an RMCR 50 mm cog and black YSi system for sale.

CUR4VNM

iTrader: (10)

I sent you a pm

CUR4VNM

iTrader: (10)

Thank you tvanlant for the reply that's the kind of help I'm looking for. Not sure what's considered a lot to drive the blower I make 600rwhp. What about YSi's?

Thanks Bob I'll send you a pm and we can talk about it some more as well

Monte4ever

iTrader: (2)

F-1A-94..........enough said.

tvanlant

iTrader: (4)

Ysi has been around a while and has proven to be a good blower. However I think the f1a-94 is on another level.

Bob@BruteSpeed

iTrader: (16)

Thanks, I appreciate it. Bob