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#1
12-01-2003, 11:56 PM
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I have a 1976 Pontiac Catalina Safari with a 455... I want to lose the factory exhaust manifolds and their noisy heat riser valve. Are there any earlier exhaust manifolds or headers that will fit this vehicle.
Cheers, Dep
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Cheers, Dep |
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#2
12-01-2003, 11:56 PM
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I have a 1976 Pontiac Catalina Safari with a 455... I want to lose the factory exhaust manifolds and their noisy heat riser valve. Are there any earlier exhaust manifolds or headers that will fit this vehicle.
Cheers, Dep
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Cheers, Dep |
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#3
12-02-2003, 06:20 PM
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I have manifolds off a '76 455 engine. I used the engine in a '73 and kept its manifolds. The '73 didn't have the heat riser feature. Instead, it had passages that are swept into a "Y" a little better at the outlet. That would probably improve flow a little bid. That might be a good way to go for your car. Probably has the outlet in the same location even.
Mike |
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#4
12-02-2003, 06:39 PM
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Get a set of hedmann shorty hedders thats what i am running and love them!!
Grandville 464 14.26@ 95.84 mph in 4860pds!!
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Darby 74 Grandville 2Dr 455 c.i 4550# 2011 1.60 60 ft,7.33@94.55-11.502@117.74  2017, 74 firebird -3600 lbs (all bests) 1.33 60 ft, 6.314@108.39 9.950@134.32 M/T 275/60 ET SS Drag Radial 2023,(Pontiac 505) 1.27 60 ft, 5.97@112.86, 9.48@139.31.... 275/60 Radial Pro's |
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