Does anyone know if the upper intake from this 85-86 Camaro/Firebird 2.8L MPFI engine flows any better than our stock Fiero version? I mean is it less restricted through the neck, similar to a Dawg modification? Of course one would have to change the direction of the cold air plumbing and throttle cable, etc.

That is the LB8 engine; 135 hp and 165 lbs torque.

Don't know about flow, but those numbers are lower than the Fiero L44 engine, which was rated at 140 hp and 170 lbs.

The beauty of it (once you switch to DIS) is that you can then port the neck to up to 60mm easily without the "surgery" required (See DAWG intake mod).
Stock though it's got an even smaller TB than the Fiero. So I created an adapter to use a larger throttle body. Don't forget to shave it down where it meets the middle manifold. This allows you to polish and port much deeper into the plenum and makes the ports much larger. Same would have to be done to middle manifold where it too can be shaved down about 0.3"

quote That is the LB8 engine; 135 hp and 165 lbs torque. Don't know about flow, but those numbers are lower than the Fiero L44 engine, which was rated at 140 hp and 170 lbs.

Hmmmmn, curious. What accounts for the lower HP I wonder?

quote Originally posted by lou_dias: The beauty of it (once you switch to DIS) is that you can then port the neck to up to 60mm easily without the "surgery" required (See DAWG intake mod). Stock though it's got an even smaller TB than the Fiero. So I created an adapter to use a larger throttle body. Don't forget to shave it down where it meets the middle manifold. This allows you to polish and port much deeper into the plenum and makes the ports much larger. Same would have to be done to middle manifold where it too can be shaved down about 0.3"

So this is the intake you are using on your 3400 with 3.4TDC pistons. What 60mm throttle body are you using?