Here is another article that outlines 10 parts you should consider when building up your L98 (LB9 too) for maximum power.
Enjoy!
Posts Tagged ‘Exhaust
Here is a quick article on recommended parts for your TPI powered thirdgen.
Enjoy!
Here is a GMHTP Project Magnum article (1988 L98 Formula) – focused on exhaust. The article highlights the change from stock parts to SLP headers, new cats, and a SLP cat-back exhaust. Total cost was $1286 and the car picked up12 hp on the dyno. They also changed the stock ignition module and coil to Accel parts and picked up another 4 hp and 4 lb-ft. There is a lot of detail on the install process for you home gamers out there. Enjoy!
Here is a good article on how to stage your performance mods to an F-Body with an L98 (also LT1) motor. Keep in mind that this article is 15 years old and a good portion of the parts listed are no longer available new. Enjoy!
This article is a who’s who of aftermarket parts and accessories to make your Third Gen perform better. Too bad some of these products are no longer available today.
Enjoy!
03
Apr
11
Clean & Mean – All Chevy
This article, published in an unknown issue of All Chevy highlighted a buildup of a 1991 5 speed TPI Z28. They added a Paxton supercharger, Edelbrock TPI runners, MSD ignition, Borla exhaust, SLP headers, and some other items. Car went from low 15’s to mid 13’s with the changes outlined above.
Enjoy!
03
Apr
11
Backdraft – Car Craft April 1993
Here is a quick writeup of the effect of an after cat exhaust system change on a 1988 350 Formula. No dyno results were given, but the change in exhaust netted a 0.18s decrease in 1/4 mile time and a 0.36mph increase in trap speed.
Enjoy!
This article was published in the July 1987 issue of Car Craft magazine. It details the effect of two different exhaust systems on the Third Gen LG4 engines and what performance gains they experienced. The Edelbrock TES dropped 0.7s off the car’s 0 to 60mph time, the Banks system added 22 RWHP uing a butchered stock cat (dropped 0 to 70mph by 0.93s).
Enjoy!
31
Mar
11
Budget Bird – PHR June 1987
This article is from the June 1987 Popular Hot Rodding that shows a bolt-on parts impact on a (new) 1987 LG4 Firebird Formula. The article shows the impact in both power (RWHP) and also the 1/4 mile performance of Edelbrock tubular headers, 3″ cat, stock TPI exhaust, Performer 3701 EGR intake manifold, and a custom cold air kit. The car picked up 48 hp at 4500rpm and gave a 1/4 mile performance of -1.28s and added 8.4mph!
Enjoy!
Popular Hot Rodding had an article in June 1990 highlighting Turbo City’s TPI performance system. The kit included a new y-pipe, cat back flowmaster exhaust, K&N air filters, underdrive pulleys, spark plug wires, PROM, and a TPI air foil. While they did not give specifics, the test car, a 1989 5.0TPI convertible with a T5 ran low 14’s with the kit, apparently over a 1 second reduction in ET.
Enjoy!
thirdgenfbody 