350 tpi headers. 45. Engine has about 8,000 miles. 7 TPI Camaro/Firebird 305/350- PER SIDE Some studs may need to be replaced. Jul 4, 2011 · It does NOT occur in this car: 1989 Firebird 350 TPI (ported 1987 Corvette L98), identical headers, open intake and 2-1 exhaust, no emissions, TPI fuel pump, 91 pump octane gas, basically stock fuel lines. , and installing a Holley engine management system. Next stop will be at custom tuner to dyno tune everything. We would like to show you a description here but the site won’t allow us. Edit: If these are aluminum heads, they are similar to the ZZ4 heads. The Key reason the the 88-92 L98 350 TPI motors made 245hp and the 93 LT1 made 275hp is that intake. Short headers. elrmvu suprz egake mhoyo puax jgh hjkx pze dsi faeotjz