Re: 5.7 vortec intake
Chevrolet 262-400 Small-Block V8
PERFORMER EPS VORTEC (idle-5500 rpm)
Now available for small-block Chevys with Vortec or Edelbrock E-Tec cylinder heads, the Performer EPS dual-plane manifold is optimized to deliver superior performance with Edelbrock square-bore Performer Series or Thunder Series AVS carburetors. The runner design is "tuned" for peak torque around 3500 rpm on a 350-inch engine and it?s ideal for power from off- idle to 5500 rpm. Dyno tests showed gains averaging 5+ ft/lbs. of torque from 3000 to 4500 rpm for more performance where you need it most. Match with a dependable Edelbrock square-bore carburetor for maximum performance gains. Will not fit under stock Corvette hood.
Performer EPS manifold for Small-Block Chevy Vortec (non-EGR) #2716
Performer EPS manifold for Small-Block Chevy Vortec w/ Polished finish (non-EGR) #27161
Performer EPS manifold for Small-Block Chevy Vortec w/ EnduraShine finish (non-EGR) #27164
Carburetor Recommendations: Edelbrock Thunder Series AVS or Performer Series carb, 500-650 cfm (see Carbs & Accessories),use bracket #8031 or #8036 for 1972-78
Installation Notes: Recommended intake gasket: Edelbrock #7535. Manifold ht: A-3.96", B-5.08"; Carb pad height: 4.52". Port exit is 2.05" tall with slanted side walls. A/B Measurements
Chevrolet 262-400 Small-Block V8
PERFORMER RPM VORTEC (1500-6500 rpm)
Based on the highly successful and powerful Edelbrock #7101, this single four-barrel intake is designed for the street rod, marine and engine swap market utilizing 262-400 c.i.d. Chevy V8s with 1996 and later Vortec (L31) cast iron or the Edelbrock E-Tec aluminum heads. An external water bypass boss is machined into the front of the water crossover for use on 1996 and later Vortec production engines. Manifold accepts square-bore carbs only. For street and marine engines operating from idle-5500 rpm, see the Performer Vortec manifold. Available with standard finish or polished.
Performer RPM Vortec #7116*
Performer RPM Vortec w/ EnduraShine finish #71164*
Polished Performer RPM Vortec #71161*
Carburetor Recommendations: Edelbrock Thunder Series AVS or Performer Series carb, 650-800 cfm (see Carbs & Accessories), use bracket #8032 for 1972-78
Installation Notes: Recommended intake gasket: Edelbrock #7235 or GM #89017465.
Manifold height: A-4.20", B-5.25" see A/B Measurements. Port exit dimensions: 2.05" tall (odd shaped width). Stock brackets will require modification to fit the upright manifold bolt holes. Use Edelbrock Vortec throttle bracket #8032, see Throttle Brackets and Hardware.
You need to measure, because the stock low-profile 4 brl manifold on standard heads, is shorter than one on vortec heads. This is because the vortecs have taller intake runners.
