Which exhaust manifold is best for Vortec heads? - Third Generation F-Body Message Boards

MatthewH · 05-23-2001, 08:38 PM

I know, I know, stock exhaust manifolds bad, headers good! But since I'm doing an engine swap I'm not taking a chance on buying headers that may or may not fit. I am dropping a TBI 305 into a Volvo 740 sedan and I have a choice of either the stock manifolds or Corvette rams horn manifolds (these have been used in countless other swaps). Should bother to go out and find the rams horn manifolds, or is the increase in flow so negligable that it's not worth the trouble?

Thanks,

Matthew C. Hall

Kevin91Z · 05-24-2001, 02:10 AM

Yah the Corvette exhaust manifolds are somewhat better than stock f-body ones. Its up to you.

------------------
1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.23 @ 107.62 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Webmaster: SoCal F-Bodies
-=ICON Motorsports=-

Jza · 05-25-2001, 04:01 PM

The ram-style manifold on the driver's side may interfere with the steering shaft, but I'm not totally sure about that so take it with a grain of salt.
If it came to it though, you could use the "log" style manifolds from a TPI, they flow a bit better than the TBI manifolds.