Turbo down pipe

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05-10-2020, 10:16 PM

scamaro355

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Car: 92 rs

Engine: 355 stealth ram, dart heads, S480

Transmission: 4L80E

Axle/Gears: 3.42

Turbo down pipe

Running a Bw s480. It’s 5” I’m necking down to 4” I’m curious if anyone else has ran a single 4” all the way out the back. It really curious about 4” between the heater box and engine. Non Ac

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05-12-2020, 09:59 AM

anesthes

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Car: '88 Formula, '94 Corvette, '95 Bird

Engine: LC9, 355" LT1, LT1

Transmission: T5, Zf6, 4L60E

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Re: Turbo down pipe

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Originally Posted by scamaro355

Good luck! I had a 3" in the same spot and it was very tight.

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05-16-2020, 10:49 AM

Badass355ciz28

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Car: 1983 CHEVROLET CAMARO Z28

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Re: Turbo down pipe

Quote:

Originally Posted by scamaro355

When I ran a single 4" down pipe I modified the heater box and had plenty of room. It can be done.

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05-16-2020, 02:06 PM

Street Lethal

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Re: Turbo down pipe

Quote:

Originally Posted by Badass355ciz28

When I ran a single 4" down pipe I modified the heater box and had plenty of room. It can be done.

I did the same thing, ran the downpipe angled straight downward parallel with the box after I made the cut . It barely kissed the number eight primary, but it did clear. Could have made more room by redoing/rerouting the eighth primary on the header, but I wound up switching back to a three inch downpipe because the four inch was overkill....

- Rob