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Corvette-Style 2-1/2 Inch Ram Horn Exhaust Manifolds, Pair
Corvette-Style 2-1/2 Inch Ram Horn Exhaust Manifolds, Pair
Speedway Motors

|

#9300328

Corvette-Style 2-1/2 Inch Ram Horn Exhaust Manifolds, Pair

  • 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
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Side:

Pair

$137.99

/pair

In Stock


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Product Summary

Universal Fit, Cast Iron, Natural, Gasket(s) Included

  • 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
See more details

Key Specs

MFG. Part #9300328
BrandSpeedway Motors
Material TypeCast Iron
FinishNatural
Collector Diameter2-1/2 Inch
See more specs

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Speedway Motors 9300328 Details

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

Charts

Specs

9300327-L
  • Header Dimension A: 4.00"  Manifold Dimensions (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"  Manifold Dimensions (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".

CARB Warning

For race/ off road use or for use on pre-1966 vehicles.

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.
CA Prop 65
CARB warning

Speedway Motors 9300328 Specifications

KEY SPECS
MFG. Part #9300328
BrandSpeedway Motors
Material TypeCast Iron
FinishNatural
Collector Diameter2-1/2 Inch
GENERAL
Gasket(s) IncludedYes
Hardware IncludedYes
Sold in QuantityPair

Ratings & Reviews

4.7

35 Reviews

Overall Assessment

Customers appreciate the practicality and quality of our product, often praising its easy installation and perfect fit. Its improved outlet size, 2.5" as opposed to the standard 2", is particularly admired as it increases the overall performance. Users also appreciate the manifold's adaptability as it works exceptionally well with a variety of cars, especially older models like the '62 Impala and '65 Impala SS, and engines, including the small block 350 crate. Despite minor criticisms related to bolt length, users would buy the product again due to its value for money, excellent quality, and how effectively it resolves issues such as leaks. In comparison to alternatives, it's indicated as a superior option due to greater durability and clever design which allows for better heat management. The Corvette-style Ram Horn Exhaust manifolds are thus highly recommended by customers for those looking for a reliable, high-performing and cost-effective solution.

Write A Review

4.7

35 reviews

5

25

4

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Most Liked Positive Review

5.0

this product got me unstuck

i thought it would be cool to put angle plug heads on my 383 i built for my GMC Jimmy. when i installed it, i had problems with my exhaust. block huggers ran into my motor mounts, and long tube hit spark plugs. as we all know, stroker motors need to breath, and that aint happening with stock 1984 manifolds. than i found your earlr c3 ramhorns, they work great. thanks for the fast shipping time too RG

Most Liked Negative Review

3.0

Corvette Manifolds, 2-1/2 inch/ Parts Kit

1) Attachment bolt selection incorrect. The manifolds came with 8 long bolts and 4 short bolts. There should be 8 SHORT BOLTS and 4 LONG BOLTS. 2) The 6 studs for the outlets flanges are too short for use with the typical Chevy exhaust donut. They should be at least 3/8 to 1/2 longer.

Filter by Ratings

Good replacement part

4.0

7 months ago

Low

Texas

Verified

I broke my left side original casting. Ordered these to replace. Well built and fit perfect. Probably better made than originals. They are original style castings in style and fitment. They are not number matching castings but that is not what I was looking for. Great price and value if bought as a pair with hardware. The short bolts to head were missing from hardware kit. Everything else was included.

Would Recommend

Quality product

5.0

8 months ago

Jackit

Millsboro, DE

Verified

Manifold was the same dimensions as my stock manifold as was well made. the bolts that were included bottomed out in the head because they were about 1/2 inch too long. I was able to use the existing bolts for installation.

Would Recommend

nice replacements

5.0

a year ago

chevelle

Steger,Il

Verified

Installed on a 67 Chevelle 327. wanted something different. Instead of headers that you have to make clearances. 2 1/2" runners are just the same as block huggers.

Would Recommend

I would buy it again

5.0

2 years ago

Will

SC

Verified

Brought this item for my 62 impala and it worked out great 👍.

Would Recommend

Incredible product and great price !!!

5.0

2 years ago

Tmac

Tulsa

Verified

Small block 350 crate

Would Recommend

I would by these manifolds again

5.0

2 years ago

Pops

Ste anne manitoba canada

Verified

Great product very satisfied

Would Recommend

Excellent product great team ,fast delivery

5.0

2 years ago

Al

Calgary canada

Verified

All positive. Bolt on perfection

Would Recommend

yes

5.0

3 years ago

egg

brandon mb.

Verified

no more leaks

Would Recommend

Ram Horn manifolds = Corvette Style

5.0

3 years ago

jdkoontz

Memphis, TN

Verified

I installed them on 1965 Impala SS. I did not need the brackets, so those were cut off. Easier than I thought to cut those. A couple of angle cuts on the chop saw and a little grinding. Not too bad. I had to clearance the manifold a little next to the power steering box, but not too bad there ether. I have the original ram horns, but the 2" is not desirable. The 2.5" on the Speedway ram horns are perfect.

Would Recommend

Yes they fit nice

5.0

5 years ago

Schmitty

Marshfield Wisconsin

Verified

Very good nice new look

Would Recommend

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Showing 10 of 35 reviews

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