more power

[firehawk]

hi there i got a 87 TA K6 and i want it to put up some more hp
i got about 2500 dollars for this so wat could i do
the engine is a l98 from a 91 corvette and just got overhauled

[Joe 1320]

hi there i got a 87 TA K6 and i want it to put up some more hp
i got about 2500 dollars for this so wat could i do
the engine is a l98 from a 91 corvette and just got overhauled

Never heard of K6..... but the L98 tuned port responds well to mods that increase torque. The upper and lower intake manifolds can be ported to clear up a few obstructions, headers and free flow exhaust, adjustable fuel pressure regulator and chip will get you some serious torque. Porting the MAF will get a few extra ponies too.

[DeWynter]

I must say that porting my MAF may have gained me a few ponies (like less than five) as an l98 wont run into air flow problems until you hit the 4500-5000 RPM range, and it isnt the MAF thats causing the problem, its the intake Base causing flow restriction, though the runners arent far behind. With the L98 doing mods that increase torque is the best bet by far. I did notice quite a bit of power increase when port matching the runners to the base and to the plenum, plus porting the plenum (taking out two walls right behind the throttle body) and cleaning up the radiuses around the tuned portsleaving the plenum. Best way to increace air to that engine is getting a new base intake with a better flow rate. Then later go with higher flowing runners, then better heads. Heads last because you can have great heads but if you got a choke point before the heads you gain nothing. Also a big mistake with tuned port engines is to go with big valves in the heads. Tuned port makes all the power from velosity into the cylinder. You get great velocity from the long runners then dump into a big open intake port and valve then the air slows to much and you lose torque. HP is really only a factor above 5250 RPM and since the TPI intake is limited to under 5000 RPM.... I have a complete mock up of the L98 built in a program called Engine analyzer pro, so if you want to test some different configurations before actually doing it PM me and we can give you a rough estimate of what it will do for you. The engine in the mock up took me about 8 months to fully reserch and build as I needed accurate flow numbers and mesuments for the complet engine. I can also do this for the LT1 for anyone too as I have a stock one built for that two. The program was with in 8% HP and 10% torque on my 383 build, so I was very happy with the program, only thing is you need extreemly acurate mesuments and info for all add-on parts. I also got my L98 out of a 91 vette.