SBC Chevy 327 350 Corvette-Style 2-1/2 Inch Ram Horn Exhaust Manifolds, Pair

Description

2 1/2" outlets, Has provision to accept original generator and water tank type brackets on passenger side, Driver side includes OEM boss for expansion tank
Corvette-Style 2-1/2 Inch Ram Horn Exhaust Manifolds, Pair
Sku # 9300328
Mfr. Part # 9300328
Condition
New
Brand
Speedway Motors
Sold
Pair
Details
Info
These "rams horn" cast iron exhaust manifolds were patterned off the 1962-63 327 Corvette but are not OEM remanufactured manifolds (no casting numbers). They feature the big 2-1/2" diameter outlets and have provisions to accept original alternator type brackets. They are the perfect addition to a retro 327 style build: 365hp L76, 375hp L84, or 350hp L79 (all came with 2-1/2" outlets).
These Chevy ram horn manifolds are copies of the original1962-63 Corvette manifolds and can be used on almost any small block engine up to 1999. The cast in brackets are for the water tank on the drivers side and generator bracket on the passenger side. These can be cut off and smoothed per customers preference. These are a square port configuration with 1-5/16” top to bottom and also side to side. Compare to your head port size for compatibility.
Modeled after 1962-63 327 Corvette manifolds
Works on most small blocks up to 1999
2-1/2" diameter outlets
1-5/16" square ports
Use with 3 bolt header reducer/collector
Includes (1) left and (1) right side manifold
Gaskets included (manifold to cylinder head and outlet collector gaskets)
Manifold to cylinder head bolts/hardware and collector stud/hardware are included
Specs
9300327-L
Header Dimension A: 4.00"  (GIF)
Overall Length: 20.25"
Overall Height: 6.50"
Center to Center: 3.50"
Collector Diameter: 2.50"
Notes: Center of head mounting bolt to bottom of collector flange is 4-3/16", to highest point of manifold is 2-3/4"
9300327-R
Header Dimension A: 4.0313"  (GIF)
Overall Length: 21.00"
Center to Center: 4.50"
Collector Diameter: 2.50"
Inlet Size: 1.3125"
Notes: Distance from head mounting bolt to collector flange bottom is 4.1875". Center of head mount to highest point is 2.75".
Charts
(JPG)
Installation Tips
Both the left and right sides include a mounting boss on the front of the manifold. If it is not required or needed, it can be machined off if necessary by the end user / installer.
Ports measure 1-5/16” side to side and top to bottom Has sufficient material for porting/matching to your head.
If using on original '62-'63 Corvette:
Generator mounts on passenger side (right side, 4.5" bolt centers)
Water tank mounts on drivers side (left side, 3.5" bolt centers)
These manifolds will bolt onto the Chevy small block engines up until the advent of the LS series engines in 1999. They are copy of the stock 62-63 Corvettes where the passenger side manifold is cast with the boss for the generator and the drivers side is cast with the mounting boss for the water tank. This is reverse of the later years and the possibility of adapting to different accessories such as the A/C compressor would be up to the installer. These are specific to the 62-63 Corvette for accessory mounting.  No issues with high compression engines have been noted.
These manifolds will work with the standard port small block Chevy engines. Fit to your application can be verified by some basic measurements as follows: * A” dimension from the head to outer edge of the collector flange is 4-1/32” * Center of head mounting bolt to bottom of collector flange is 4-3/16” * Center of head mounting bolt to highest point of manifold is 2-3/4” * Right Manifold: Accessory bolt boss center-to-center is 4.5" * Left Manifold: Accessory bolt boss center-to-center is 3.5" The outlet is directly below the center two ports on the head. You will need to verify clearance on your steering and cross member for exhaust hook up.
Specs
Sold in Quantity
Pair
Finish
Natural
Material Type
Cast Iron
Gasket(s) Included
Yes
Hardware Included
Yes
MFG. Part #
9300328
Collector Diameter
2-1/2"
Reviews
Yes they fit nice
Rated
by Schmitty on May 19, 2020
Summary:
Very good nice new look
Cons:
Bolts are to long
Pros:
New clean look
Yes, I recommend this product.
yes i would buy again
Rated
by chuck on November 04, 2019
Summary:
exactly what i needed thank you
Yes, I recommend this product.
OK
Rated
by Dave on April 16, 2019
Summary:
Product looks very good. These were mounted on a motor a project car we are working on. Was pleased the manifolds included mounting bolts and gasket set.
Yes, I recommend this product.
good product
Rated
by john on January 16, 2019
Summary:
There is no hole for the choke tube and the mounting bolts are the wrong length
Yes, I recommend this product.
Corvette-Style 2-1/2 inch Ram Horn Exhaust Manifolds
Rated
by chev702 on June 26, 2018
Summary:
Really nice well made manifolds, it would be nice to be able to get the passenger side without a bracket mount, but it was not to difficult remove. worked well for my application.
Yes, I recommend this product.
Related Items / Suggested Parts
Corvette Style 2-1/2 Inch Ram Horn Exhaust Manifold
Fel-Pro P9587 Corvette Manifold Exhaust Gasket
Tru-Ram® Small Block Chevy Exhaust Manifold Gasket Set
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Speedway Motors is America’s Oldest Speed Shop® and has been a trusted source for specialty rodding and racing products and friendly expert advice for more than 70 years. Founded in 1952 by “Speedy” Bill Smith – a racer and street rodder himself – Speedway has grown from a one-man operation to become the world’s largest manufacturer, distributor and retailer of street rod and racing products. Our industry-leading fast delivery is the result of same-day shipping from our state-of-the-art, centrally located 500,000 sq. ft. headquarters. Speedway’s size offers customers unmatched product selection and low pricing, while our excellent technical support and customer service have made us a recognized leader in the rodding and racing industries.
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