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Apr 16, 2008 | 12:43 AM

flynnd_33

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From: West Point NE

So u wanna guess?

So i wanted to see what all of you think my combo with make for hp/tq...and possible times....

Combo is

355
11.2.1 compression
patriot performance CNCd 195's 64cc
performer rpm air gap manifold
eldebrock 750 1407
bracket master cam 230/230 292/292 and 480 lift on I and E
1.6 rockers
stock rods/crank with 100 dome hypers....

and i have a superpower shot layin around....so if not quick enough have a 100/150 shot ready for it.....and its a 1980 L82.....turbo 350...3500 stall....and 3.70's...

so what do u all think?

Apr 20, 2008 | 09:19 PM

korvetkeith

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From: Peoria IL

Quote:

Originally Posted by flynnd_33

What do the heads flow?

Apr 22, 2008 | 10:42 PM

flynnd_33

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From: West Point NE

that should give u the head flow....i think there a very good bang for the buck...and try something new....

Apr 24, 2008 | 01:26 AM

korvetkeith

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From: Peoria IL

Quote:

Originally Posted by flynnd_33

that should give u the head flow....i think there a very good bang for the buck...and try something new....

460hp assuming something like 110 lsa and 1 3/4" full length headers.

Apr 24, 2008 | 06:51 AM

SuperL98

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From: Mass Mass

I ran a quick simulation on your combo, with what you posted.
Used Lunati #00010 230/230 .480/.480 109 LCA Hyd Flat?
Put 1 3/4 headers and a 800cfm exhaust (gave about 1.5 psi backpressure).
Anyway, I'm someplace that I don't have all my passwords, so I can't post you a graph but ... I get

481 hp @ 6000-6250
455 ftlbs @ 4800-5000

Apr 29, 2008 | 12:36 AM

flynnd_33

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From: West Point NE

Quote:

Originally Posted by SuperL98

thanks super 98 for running that quick sim....and yes thats the exact cam that i have.....and i have the hooker headers...with side pipes...so pretty close....but yea thats alot better than i thought....how close are those simulations.....-20+ hp or what....now im just afraid of the rear...heard there quite weak....i hope this doesnt break it....might have to baby it a bit....and neone have guesses on what kinda times i can expect from this hp....off and on the bottle....thanks for the sim tho....

Apr 29, 2008 | 11:49 AM

korvetkeith

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From: Peoria IL

Quote:

Originally Posted by flynnd_33

IMO, with everything optimized you might make that much power. However since most setups never are I geussed low.

Apr 29, 2008 | 03:49 PM

SuperL98

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From: Mass Mass

Quote:

Originally Posted by flynnd_33

....how close are those simulations.....-20+ hp or what....

I've done maybe 60 or 80 Sims of real cases, and if the data you put in is complete and accurate, the match usually is quite good to a real run on an engine dyno. The HP curve and peak is mostly right on, and yes maybe +/- 10HP at the peak. Chassis dyno runs (subtracting 12 to 15%) the Sim typically over estimates the low end power (torque), I have some theories on why that is

I have found the worst matches are with some magazine article, especially when they are trying to sell you something

If you can give me a better intake runner length and dia, and header pipe length and dia (those long side pipes will have an effect), I will run it again sometime and post a graph.

I did one for another forum member here, and it came out pretty OK ..

http://forums.corvetteforum.com/show....php?t=1985396

Quote:

Originally Posted by korvetkeith

IMO, with everything optimized you might make that much power. However since most setups never are I geussed low.

Your guess will probably turn out closer than mine and it didn't cost you $500+ for a program .... experience is worth more than $$$$$