Alright folks, I'm just a little curious as to what other people may think as to what kind of power I might be putting down. I honestly have no ideas...

(After a complete tear down and rebuild, no old parts were used)

L98 TPI

Comp Cams (.500/.510 Lift) Performance Roller Camshaft (Duration Unknown)
Comp Cams (1.6) Pro-Magnum Full Roller Rockers
Edelbrock High-Flo Intake Manifold
SLP Tuned Port Injection Runners
Edelbrock Shorty Headers
Block bored .30 Over
Flat-Top Pistons
MSD Ignition Box
MSD Blaster Coil
Accel 8.8 Spark Plug Wires
Ported, Matched, Polished, (Shaved?) Heads
K&N Air Filter
Extensive porting to TPI Plenum and SLP Runners
Throttle Body Coolant Bypass
Removed Catalytic Converter
Homemade Air Intake
Custom Burned Chip Based Off Car's Modifications
Shift Kit (Brand unknown)
Aftermarket Torque Converter (Brand Name Unknown)
160' Thermostat
Flowmaster 3' Single inlet-dual outlet muffler

All i'm wanting is some ballpark numbers...

 

250-275hp

 

One key component that needs to be known to have an idea. If its a basic hyd roller with those lifts, it looks like a low duration cam. I believe comp has several with lifts inthat range, i believe a 210/220 type cam with that lift which is a good TPI based cam. They may have a 220/230 cam with that lift but I cant remember. It was in their computer controlled lineup i believe.

If its anything in the 210-220 range I would say depending on port work to the heads and tune, it could be anywhere from 240-280 whp. Just a guess. SLP runners give you some more top end compared to other long tube runners which is good idea for the cam. Let it rev up alittle, that cam will go to 5500.

I figured a full bolt on car can be in the 240's range with stock heads/stock cam. Mild cam and some head work on a fresh bottom end with abit more compression than stock should easily get you another 20-40 hp depending on the work to the heads. Maybe even more. Its not uncommon to see mild port L98 heads and a hotcam make 300-320 whp with a full aftermarket TPI. So you may be up that high as well

 

oohh orr89rocz this makes we wanna dyno my car.... i would love that 300whp number.. i have that exact combo u mentioned.... the only reason i havent done it is because im afraid i will blow up my engine like i did with my old l98 engine...

 

Alright, So what's holding this engine back??

I've put so much money into this motor and all that gets me is another 50 HP over stock???

 

50 aint bad for a cam/intake swap on a TPI car with minor head work.

More power will be made with better intake like a short runner design... miniram/stealth ram/even superam with ported base. Those will give you much better gains in power for not much more cost (well miniram is expensive unless find used, hsr is more competitive with aftermarket TPI pricing, and superram is discontinued and rarer now, so finding one may bring more money these days)

 

In Owensboro, KY http://www.speedydyno.com/dyno.cgi
In Bowling Green, KY 502-745-9569 Holley Performance Products

That is the only way to know your horsepower. I did a quick Google search and found these two.