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Updated: how much power would this combo make, and what would it turn in the 1/4?

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Old May 28, 2002 | 03:40 PM
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Xenodrgn's Avatar
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From: Bayville NJ and Newark at NJIT.
how much power would this combo make, and what would it turn in the 1/4?

350, .30 over, edlebrock rpm intake, performer cam, edlebrock carb (600 or 650 CFM, owner is not sure), headers, TH350 trans, true dual exhaust, no cats, back to flows...

All sitting in an 85 Monte LS, with interrior.

My guess is 13.5 at 100+ in the 1/4, making about 300 HP at the crank?

And correct me if I'm wrong, but that carb shold be something like a 700 or 750 DP, no?
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Old May 28, 2002 | 03:50 PM
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Car: 99 Formula
Engine: LS1
Transmission: T56
Axle/Gears: 342
Gears and whether it's auto (TC) or manual will need to be known to be accurate. Also, what are the specs on the heads? 600cfm would be fine for that setup.
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Old May 28, 2002 | 04:07 PM
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From: Bayville NJ and Newark at NJIT.
Like I mentioned, he has a Turbo 350 sitting behind the engine. It's an automatic.

The car is a posterchild for edlebrock, and while I believe the heads are stock, they would probably be Performer RPM heads. Performer RPM heads come in 64 and 70 CC versions. I know for a fact that an RPM intake sits above them, and above that sits a Performer carb (either 600 or 650 CFM, as I stated earlier). Inside there is also a cam in there cam. Probable specs are listed below... The owner said they were cheap equal length headers, with temperature tape wrapped around them...

According to Edlebrock, they put a combination together consisting of the RPM heads, intake, cam and 750 CFM carb on a 9.5:1 350 and had it make 420 HP. Quite impressive.

Most likely specs on the cam are: 308 intake/318 exhaust duration, or 278 intake/288 exhaust duration. Both hydraulic.
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Old May 28, 2002 | 04:18 PM
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Car: 99 Formula
Engine: LS1
Transmission: T56
Axle/Gears: 342
Oops, missed the part about the tranny. I would say with some correctly matched gears to the cam, and a higher stall TC than stock mid 13s should be possible.
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Old May 28, 2002 | 04:20 PM
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From: Orygun
If you're aiming for power dont get flow masters
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Old May 28, 2002 | 04:33 PM
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I know, it's not my car, it's the car I'm looking to buy.

I was hoping the combo would be worthy of 12's, but I guess I was hoping for too much. I thought 350's were mid 13's from the factory... guess not.
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Old May 28, 2002 | 04:37 PM
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From: Orygun
haha
no not 13's fromm factory and yea you're hoping a little to much.
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Old May 28, 2002 | 08:02 PM
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From: webster ny usa
yea

thats a little low in the 1/4, but try it out..
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Old May 28, 2002 | 08:18 PM
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now whats wrong with flow masters
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Old May 28, 2002 | 08:49 PM
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Car: 89rs
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the combination you just layed out is no differnt than a standard 350

300 at the crank is max. In a 3600lb mc low to mid 14s at the best.
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Old May 28, 2002 | 08:55 PM
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You guess is pretty off. The performer cam is pathetic. Even with perfect conditions, better heads, and at the crank, the HP numbers Edelcrap advertises are a complete fabrication.

I'm saying high 14's.

BTW, don't waste your money on the RPM heads either, they suck. Get vortecs, Trick Flows, or AFRs.
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Old May 29, 2002 | 01:04 AM
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From: Orygun
If you're going to be like that trick flow isnt' any better.
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Old May 29, 2002 | 02:12 PM
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From: Bayville NJ and Newark at NJIT.
Update:

I talked to the kid today, he said the guy has all the reciepts, and he could find anything out I wanted, but I waved him off cause I'm still very unsure yet.

He did indeed say there were heads on it, but he couldn't remember the names, he said it something like "black racing", he couldn't recall the name... Perhaps Brodix?

I asked him if it was the RPM cam in there, he didn't say yes but he didn't say no, he couldn't recall the specs on it at the time.

So perhaps the car is faster than we all originally though?

How much would you pay for a car with this setup? It's sitting in a white '85 Monte LS, interrior isn't great and the exterrior needs to be painted, there are minor rust spots (bubling under the paint in a few spots, some about a food wide...)

Do you think it would be a steal if I were to pay 1000 for it?
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Old May 29, 2002 | 02:37 PM
  #14  
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Car: 99 Formula
Engine: LS1
Transmission: T56
Axle/Gears: 342
Originally posted by CORKVETTE1
now whats wrong with flow masters
The Hooker Aero-Chamber out flows it. That's why I'm a Hooker man.
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Old May 29, 2002 | 02:50 PM
  #15  
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Car: 87 Formula
Engine: 355
Transmission: TH400
Axle/Gears: 5.00
Are the heads aluminum? Look at all the goodies. Ignition, rearend, stahl converter, Fuel system, gauges, shifter, etc. Then reply with all the info and I am sure we will let you know if it is a dream weaver, street squirrel, POS or a steal.
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Old May 29, 2002 | 02:56 PM
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From: Bayville NJ and Newark at NJIT.
I'm almost positive no-one rebuilds a turbo350 tranny for a built 350 and does not at least select a half decent convertor.

I know it has an MSD 6 series ignition, it has full guages, a Moroso 7 quart oil pan, those mystery heads we can't figure out, a cam of some sorts, not a lethargic stock one. RPM manifold and Performer carb. Headers with true duals back to flowmasters. No idea about the rear-end, I know Monte's were optioned with a 3.73 posi rear...

I'll take a look at it tomorrow and have him call he previous owner and see what the real deal is.

The real update of the post is that the heads were infact, NOT, Edlebrock RPM's.

Last edited by Xenodrgn; May 29, 2002 at 02:58 PM.
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