HP guesstament

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Weester

Well-Known Member
Joined
Nov 4, 2006
Messages
17,693
How much HP do you think this motor is producing, the guy says 800HP

87 Buick GN T-Top
Fast XFI Stand Alone w/Wideband O2
1000cc RC Injectors
GN1 Sheet Metal Intake
80mm TB
GN1 CNC Ported Aluminum Heads
T&D Rockers
Crane Hydraulic Roller Cam
Turbonetics T70 Ball Bearing Turbo
Tial 44mm Wastegate
Cotton Performance Front Mount Intercooler
ATR Headers
3” Dual Exhaust
Continental 3500 stall converter w/lockup
Shift Kit
Walbro fuel pump hard wired
Bilstein Shocks valved for GN
Mickey Thompson street slicks
23 – 24psi on E85
30+ on C16
 
Around 500 hp with the convertor unlocked, i doubt the convertor would last very long locked up at those power levels.

Should run bottom 10s in a full weight t-top Gn, i assume its a 109 block?

BW
 
Not even gonna pretend I know enough about these cars so I won't make a guess. I would think more info is needed though to get an accurate guesstimate.

Cam specs?
Cubic inches?
Compression ratio?
T&D's rocker ratio?
You just running the one fuel pump???

Should be a rowdy combo.
 
It's not going too run long with one Walbro at 24psi with E85 on a T70.
You'd be best advised to get a twin pumper for either gas or E85 on your build.

I don't think any 109 block has made 800RWHP on a dyno so your engine builder is stroking your ego or his work.

30psi on C16 with an efficient converter can put you around the 650RWHP and 800RWTQ, maybe that's what he meant.

This sounds like a 400 trans with the Continental.
 
Its not my car! My son works with the guy and I think he's pulling my kids leg.
He told him that the tranny is a 200r4 with 700r4 parts! And yes its a 109 block. I tried to explain to my son that a 109 wouldnt stay together with that much hp, was I wrong?? Everyone I know running that much hp is using a stage 2 motor.
 
You said 800 hp, not rwhp, which is quite possible. As was mentioned, one pump isn't going to get it done. Don't think the injectors are going to be big enough either. My brothers TSM car maxed out the 85 lb injectors, and he's running 96 lb injectors now. I think those 1000cc injectors equate to 96lb could be wrong though but with e85 he's going to need bigger stuff. He just about has a TSM setup, and it takes about 800hp to run 9.40s-9.60s. Plug 9.5 seconds, 140 mph and 3550 lbs into any hp calculator and you'll get about 800hp at the flywheel as your answer.
 
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