Need help! Building up a FI motor

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Jun 26, 2004 | 06:06 PM

Unusual T/A

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From: ft worth tx

Need help! Building up a FI motor

I may be needing to replace my stock 99ls1 and am wondering if I want to build the motor up what will I need and what prices am i looking at. I want to do a new set of heads(nothing crazy), a new cam, and the forged internals of course. When building a FI motor what parts do I need to look for? Im trying to stay around the same 346 size that I currently have. I know very little on this subject and would like to know more. I want to be able to run 15-20lbs of boost on race gas and want to be safe about it.

Thanks

Jun 26, 2004 | 06:12 PM

NA$TY-TA

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From: San Antonio, TX

Give AP Engineering a call.....

http://www.automotiveperformance.net/engine.htm

Heres a rundown of there Cheap Street 347ci LS6 Shortblock

Polished & Magnafluxed Stock Crank 3.622" stroke crank
Diamond Forged Pistons / Flat Tops or Dish
Diamond 4130 Chromemoly Wrist Pins
Diamond Pro Select Ring Set/ File Fit
Eagle H-Beam Connecting Rods
Federal Mogul 152M Main Bearings
Clevite CB663H Connecting Rod Bearings
Clevite LS1 cam bearings
ARP Main Studs
Shortblock cost - $2799.00
w/cores
$600 block core
$200.00 crank core
Or send in your own....
I would add the thermal coating on the piston also.. its only $150 more
Give them a call they will take care of you
Heres there 6.0L heads
APE 6.0 Liter Stage I Head

2.055 / 1.600 Stainless steel valves
Comp Cams 978 Hyd Roller Valve Springs
Bronze valve guides
Comp Cams Tiantium Retainers
Welded Chambers
Fully assembled and ready to go on
$1999.00 NO CORES NEEDED

FLOW NUMBERS
Flowed on a 3.970" bore @ 28" w/ radius inlet
Exhaust was flowed w/tube

INTAKE CFM EXHAUST CFM
.100" / 69.5 56.6
.200" / 143.3 116.1
.300" / 206.5 201.2
.400" / 261.0 165.1
.500" / 291.5 238.9
.550" / 303.1 250.7
.600" / 313.4 262.2
.650" / 316.5 262.5

Kyle

Jun 26, 2004 | 06:17 PM

Unusual T/A

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From: ft worth tx

thats good info. So with a T76 sized turbo I could expect good power out of that eh?

Jun 27, 2004 | 08:41 PM

MarionT/A

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From: Howell, MI

Quote:

Originally Posted by NA$TY-TA

what would a typical turbo run?

Jun 27, 2004 | 10:13 PM

69firebird

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From: hurst tx

unusualta,

if you dont go with that APE engine, I would talk to automotive machine in ft worth, they built my motor for me and they did a damn good job, if you go tthe part together they woudl do the same for you
talk to steve
thanks
ed
firebird455@onebox.com

Jun 27, 2004 | 10:53 PM

eviltwins

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Quote:

Originally Posted by Unusual T/A

thats good info. So with a T76 sized turbo I could expect good power out of that eh?

A T76 will make good power on anything that it isn't surging on, and anything that isn't too large in CID that it is choking off the exhaust side. A 348" motor is a good size for a T76, you would have no trouble making 800+ RWHP provided all your other parts are up to spec.

Jun 27, 2004 | 11:45 PM

mdhmi

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From: Detroit, MI

Figure a good $3K for a forged 346 CI motor. With the forged bottom end you can strap on either a turbo or a blower and make monster power all day long.

Mark

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Jun 28, 2004 | 12:32 AM

Unusual T/A

Thread Starter

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From: ft worth tx

Quote:

Originally Posted by mdhmi

Figure a good $3K for a forged 346 CI motor. With the forged bottom end you can strap on either a turbo or a blower and make monster power all day long.

Mark

Now for Making monster power like that, would it require the use of a massive heads/cam combo? Or could I do something like stock 6.0 liter heads and a nice turbo grind cam??