408w high compression low boost - Ford Mustang Forums : Corral.net Mustang Forum
 
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post #1 of 11 Old 09-29-2011, 11:58 AM Thread Starter
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408w high compression low boost

Internals
brc pistons -6cc
crowlers rods 6.250
eagle 4340 crank

valvetrain
AFR 205 heads with 2.05 2.02 valves 72cc
1.6 & 1.7 roller rockers
Xtreme Fuel Injection (XFI) Hydraulic Roller Camshaft
1985-95 5.0L Ford (Stroker)
Lift: .608''
Duration: 304°/314°
RPM Range: 3200-6500

Fuel system
42 lb injectors
aeromotive pressure reg.
255 walboro w/ vortech boot a pump
edelbrock rails

intake
eldelbrock victor jr
elbow
holley 80mm tb


im looking to go single turbo and imma go with a thicker head gasket to bring me down to 9.5 or 10 to 1.

looking to run maybe 8-10 lbs on a single turbo and hoping to get around 650ish, just tring to gather information and thoughts.


88 LX 370 Single 70 Turbo
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post #2 of 11 Old 09-30-2011, 04:10 PM
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Your going to need more injector for sure, 8-10#'s on a 408 is some serious hp with the right size turbo.

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post #3 of 11 Old 10-01-2011, 03:17 PM
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There are a lot of variables involved but higher compression will make signficantly more power if set up properly.

Are you a pump gas guy or are you ok running good fuel?

My car made a lot more power withe the compression a bit higher but I am ok with running race gas.

1989 Saleen 89-425 all original + Baer 6P Brakes
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post #4 of 11 Old 10-01-2011, 04:04 PM
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how much power you making now?

93 lx-a few bolt ons-
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post #5 of 11 Old 10-01-2011, 05:26 PM
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With a 408 your goals of 650hp are underestimated. With a properly tuned setup you'll be looking at much more than that. I'd go big on the fuel

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post #6 of 11 Old 10-05-2011, 09:21 AM
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With 8.8 psi on a 347 I made 650 rwhp (on wastegates) and went 9.52. With 10 psi on a 408 if it is setup right you will be considerably over where I was.

1989 Saleen 89-425 all original + Baer 6P Brakes
1990 Saleen 90-137 heavily modded
1989 Shadow Blue Metallic Hatchback LX
[email protected] -- 94mm T4 True Street Trim
Thanks: Baer, Haltech, UPR, National Parts Depot, Meziere, Weldon, BBRC
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post #7 of 11 Old 10-06-2011, 10:23 AM Thread Starter
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well i understand about the injectors and fuel system, i was gonna order the back half kit from aeromotive. Not sure on what it is making now, havn't had it dyno'd or at the track yet. Still stock rear end, so im playing it safe, just wating for my gear to come in then it will all be set up.

Race gas doesn't bother me b/c only time i wuld run it is when im racing, other wise the car wuld sit in the garage, lets face it its not going to be a daily driven car, just back and forth to the track 20 miles away and a little playing in the streets for running 110 doesn't bother me.

i mean its only 6.50 a gal here.

Just tring to see if anyone has done it and how it held up, im looking for this to be my long haul motor so maybe 2-3 years of occasionally dogging it.

untill i get my 427 built.

88 LX 370 Single 70 Turbo
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post #8 of 11 Old 10-06-2011, 11:53 PM
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Only 6.50 a gallon damn I'm used to paying 2.89 for my "race fuel".


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post #9 of 11 Old 10-07-2011, 02:01 AM
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$6.50? last I checked its $8.50 local and $10 at the track
yeah I need to swap to E85 goat, but injectors, another pump, and bigger lines are slowing me. my car can sit for months at a time and ive heard that isnt good with the corn. Ill go big one day LOL

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post #10 of 11 Old 10-07-2011, 09:05 PM
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The inconsistency of e85 concerns me.

If 110 was really 6.50 I would try to change to that, c16 even in a drum is twice that.


1989 Saleen 89-425 all original + Baer 6P Brakes
1990 Saleen 90-137 heavily modded
1989 Shadow Blue Metallic Hatchback LX
[email protected] -- 94mm T4 True Street Trim
Thanks: Baer, Haltech, UPR, National Parts Depot, Meziere, Weldon, BBRC
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post #11 of 11 Old 10-13-2011, 10:59 PM
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Inconsistency? It changes twice a year. I live in Nebraska so we get the summer and winter blends...big deal.


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