MANIFOLDS - Chevrolet - Multiple Carbs - Small Block
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Chevrolet 262-400 Small-Block V8
STREET TUNNEL RAM (3500-7500 rpm)
Designed for 302-327-350-400 c.i.d. small-block Chevy V8s operating below 7500 rpm where low-end torque is not a prime factor. Great for engines with slightly modified heads. Applicable to street machines, street rods, pro street and marine.Will not fit 1987 and later cast iron heads. Use with Torker- Plus camshaft kit #5002 for low-end torque or Performer RPM camshaft kit #7102 for more top-end power.
Applications Part #
Street Tunnel Ram (complete manifold - base and top) #7110*
Street Tunnel Ram (base only) #7067*
Street Tunnel Ram (top only) #7032*
Throttle Linkage for forward mounted carbs #7097
Throttle Linkage for sideways mounted carbs #7071
Gasket (included with base and top) #6999
 
Carburetor Recommendations: Edelbrock Performer Series carbs #1404, 500 cfm, Edelbrock Thunder Series AVS carb #1802, 500 cfm (see Carbs & Accessories) - for forward mount only.
Holley #0-9776 (450 cfm) - for sideways mount only.

Installation Notes: Top has vacuum outlet for power brakes. Manifold will accept forward and sideways mounted carbs. Distance from carb center to carb center: 8.875". H.E.I. ignition will not clear manifold. Recommended intake gasket: Edelbrock #7201. Manifold height (top with bottom): A-9.00", B-9.60" see A/B Measurements. Port exit dimensions: 1.12" x 2.12".
 
Performer RPM Cylinder Heads Torker-Plus Camshaft & Lifters
Performer RPM Camshaft & Lifters Roller Timing Set
Manifold Bolts  

Chevrolet 262-400 Small-Block V8
C-26 DUAL-QUAD (1500-5000 rpm)
Designed for 1955-86 262-400 c.i.d. S/B Chevys, this dual-quad is low profile for hood clearance on most vehicles. Air-conditioning bosses and front oil filler tube boss included. Stock alternator brackets do not fit. C-26 Dual-Quad manifold #5426 is designed for 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. Carb center to carb center: 6-7/16". Use with Performer-Plus cam #2103 for low-end torque or Torker-Plus cam/kit #5002 for top-end power. Accepts Oil Fill Tube and Breather #4803.
Applications Part #
C-26 Manifold (non-EGR) #5425*
Polished C-26 Manifold (non-EGR) #54251*
C-26 Manifold with EnduraShine (non-EGR) #54254*
C-26 Vortec Manifold (non-EGR) #5426*
 
Carburetor Recommendations: Edelbrock Thunder Series AVS carb #1803 and #1804, 500 cfm (see Carbs & Accessories)

Installation Notes: H.E.I. will fit. Recommended intake gasket: Edelbrock #7201 (for #5425); #7235 (for #5426). Manifold height: A-2.95", B-3.30" see A/B Measurements. Port exit dimensions: 1.18" x 1.90".
 
Dual-Quad Braided Fuel Line Kit #8088 or #8091 Dual-Quad Progressive Throttle Kit #7094
Classic Valve Covers #4145 Torker-Plus & Performer RPM Camshaft & Lifters
Pro-Flo Chrome Oval Air Cleaner #1235 Performer Cylinder Heads
Performer-Plus Camshaft & Lifters Roller Timing Set
Chevrolet 262-400 Small-Block V8
C-357-B THREE-DEUCE (idle-5500 rpm)
Designed for 1955-86 262-400 c.i.d. small-block Chevys, this manifold has a balanced 180° firing order port runner arrangement. It contains an exhaust gas heat riser and offers excellent performance potential. #5419 has a machined front oil filler tube pad with boss, $5417 does not. #5418 is machined for 3-bolt carburetors. Carb center-to-center: 5-1/2". Use with Performer-Plus camshaft and lifter kit #2103 for low-end torque or Torker-Plus cam kit #5002 for top-end power. #5418 and #5419 accept Oil Fill Tube and Breather #4803.
Applications Part #
C-357-B Vortec Manifold (non-EGR) #5417*
C-357-B 3x2 Manifold for 3-bolt carbs (non-EGR) #5418*
C-357-B 3x2 Manifold (non-EGR) #5419*
 
Carburetor Recommendations: Rochester 2GC (small 1-7/16" bore) for #5419, Stromberg, Holley, Demon 3-bolt (with 1-1/4" bore) for #5418. Contact www.HotRodCarbs.com.

Installation Notes: H.E.I. will not fit. Recommended intake gasket: Edelbrock #7201 for #5419 and Edelbrock #7235 for #5417. Manifold height: A-3.9", B-4.6" for #5417 and #5419; A-3.77", B-4.88" for #5418 see A/B Measurements. Carb pad height: 4.25" for #5417 and #5419 and 4.235" for #5418. Port exit dimensions: 1.12" x 1.87".
 
RPM Air-Gap Dual-Quad (1500-6500 rpm)
Designed for 1955-86 S/B Chevys, this intake stands 1-5/8" taller than the low-profile C-26 intake and offers performance improvements in the 1500-6500 rpm range. The large runners feature our unique Air-Gap design that separates the runners from the hot engine valley for a cooler, denser charge. Will not fit under stock Corvette hood. Also available as a complete carb and manifold kit.
Applications Part #
RPM Air-Gap Dual-Quad manifold (non-EGR) #7525*
RPM Air-Gap Dual-Quad manifold w/ Polished finish (non-EGR) #75251*
RPM Air-Gap Dual-Quad manifold w/ EnduraShine finish (non-EGR) #75254*
 
Carburetor Recommendations: Edelbrock Thunder Series AVS #1803 and #1804, 500 cfm (see Carbs & Accessories).

Installation Notes: H.E.I. will NOT fit. Recommended intake gasket: Edelbrock #7201. Manifold height: A-4.57", B-4.92" see A/B Measurements. Port exit dimensions: 1.16" x 1.92". Carb center-to-center distance: 6-7/16".

RPM Air-Gap Dual Quad Vortec (1500-6500 rpm)
Designed for 262-400 c.i.d S/B Chevys with 1996 and later Vortec cast iron or Edelbrock E-Tec heads, this intake stands 1-5/8" taller than the low-profile C-26 intake and offers performance improvements in the 1500-6500 rpm range. The larger runners feature our unique Air-Gap design that separates the runners from the hot engine valley for a cooler, denser charge. Also available as a complete carb and manifold kit.
Applications Part #
RPM Air-Gap Dual-Quad manifold for Vortec (non-EGR) #7526*
RPM Air-Gap Dual-Quad manifold for Vortec with EnduraShine™ finish (non-EGR) #75264*
 
Carburetor Recommendations: Edelbrock Thunder Series AVS or Performer Series carb, 500 cfm.

Installation Notes: H.E.I. will NOT fit. Recommended intake gasket: Edelbrock #7235. Manifold height: A-4.57", B-4.92" see A/B Measurements. Port exit dimensions: 1.16" x 1.92". Carb center-to-center distance: 6-7/16".
RPM AIR-GAP DUAL-QUAD LS1 (1500-6500 rpm)
Now, hot rodders can have the late-model muscle of the popular Gen III and the classic look of dual-quad carbs. Designed for LS1, LS6, LM7 (5.3L), LR4 (4.8L), and LQ4 (6.0L) engines, the new RPM Air-Gap LS1 Dual-Quad delivers outstanding performance from 1500 to 6500 rpm. Included with the #7518 is an electronic timing module that picks up MAP, crank position, and cam position in order to drive the stock ignition system. Also available, complete carb and manifold kits.
Applications Part #
RPM Air-Gap Dual-Quad manifold for Vortec (non-EGR) #7518*
RPM Air-Gap Dual-Quad LS1 manifold for GM Gen III (non-EGR) w/ EnduraShine finish #75184*
 
Carburetor Recommendations: Edelbrock Thunder Series AVS or Performer Series carb, 500 cfm.

Installation Notes: Uses LS1/LS6 style individual port o-ring seals. Crankshaft sleeve #HP3795 and Flexplate #HP4004 is recommended when using a TH350, TH400 or 700R4 on a LS1; these items are available through Hughes Performance retailers or you can call Hughes at 800-274-RACE.

Manifold height: A-5.05", B-5.64"; Carb pad height: 5.35". see A/B Measurements. Port exit dimensions: .98" x 2.72".

X1 RAM LOG
(2500-7000 RPM)
A reproduction of the original Edelbrock X1 manifold introduced in the 1950's for 283-327 small-block Chevy. This manifold features large free-flowing straight runners for six, 3-bolt carburetors such as our Edelbrock 94. Oval carb opening measures 1.45” x 2.96”. Includes machined oil fill tube provision and period correct casting features for the best vintage look and performance for your small-block Chevy street rod application. Linkage Kit #1031, 6x2 Fuel Log Kit #1287 and Oil Fill Tube and Breather #4803 available separately.
Applications Part #
X1 Ram Log for Edelbrock 94 3-bolt Carburetor (non-EGR) #2150*
Linkage Kit for X1 Ram Log manifold #1031
6x2 Hex Fuel Log Kit #1287
 
Carburetor Recommendations: Edelbrock 94 #1151 3-bolt.

Installation Notes: H.E.I. will not fit. Recommended intake gasket: Edelbrock #7201. Manifold height: A-5.90", B-5.90". Carb pad height: 5.90". Port exit dimensions: 1.20" x 1.94".
* Not legal for sale or use on pollution controlled motor vehicles.
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