Can anyone tell me which Rams Horn exhaust works best for an FJ40 SBC conversion? Casting numbers and pictures would be helpful.
Is anyone running a carburated SBC in a 77 or newer FJ40? Did you have to have air-rails and smog pump to pass metro emissions? I understand that the newer 67-72 Chevy Truck Rams Horns can be machined for air rails if needed.
Do I need to provide the smog equipment to match the engine or the year of the FJ40? I've heard it both ways. The donor Blazer is a 78 without smog pump, air-rails and with catalytic converters. The FJ40 has no catalytic converter and has smog pump and air-rails.
Thanks,
Is anyone running a carburated SBC in a 77 or newer FJ40? Did you have to have air-rails and smog pump to pass metro emissions? I understand that the newer 67-72 Chevy Truck Rams Horns can be machined for air rails if needed.
Do I need to provide the smog equipment to match the engine or the year of the FJ40? I've heard it both ways. The donor Blazer is a 78 without smog pump, air-rails and with catalytic converters. The FJ40 has no catalytic converter and has smog pump and air-rails.
Thanks,