Chevrolet Cast Iron Automotive Exhaust Manifolds

New! Modified "Tru-Ram” Cast Iron Small Block Chevy Exhaust Manifolds

Must run cast iron exhaust manifolds in your class? Or, tired of the hassle of headers?  Our new Modified "Tru-Ram” Small Block Chevy cast iron exhaust manifolds combines the quiet, durable function of cast iron with the best performance ever available in a cast iron exhaust manifold.  

Modified "Tru-Ram” manifolds make 6 more horsepower than stock "Tru-Ram" exhaust manifolds.  They feature CNC machined port openings that will not block the large exhaust ports on aftermarket heads. Plus, the outlet area is machined for our bullet-proof Gasket-Less Adapter Pipes.  Gasket-Less Adapter Pipes are available in 2 ½” and 3” diameter.

Yes, the Tru-Ram exhaust manfolds do make a bit more power than the Corvette Ram Horn manifolds listed below. 

160-TR - Tru-Ram Exhaust Manifold - 1 only. Stock - $150.00 each

160-TR-MOD – Modified Tru-Ram Exhaust Manifold - 1 only. Stock - $225.00 each 

Note: Our Gasket-Less pipe kits will only fit on the Modified Tru-Ram Manifolds.

Cast Iron "Corvette" Ram Horn Style Exhaust Manifolds

Tired of the hassle of running headers? Our 2 1/2" Corvette "Ram Horn" manifolds are the hot ticket.

Above: Modified Cast Iron Corvette Exhaust Manifolds. Photo comparing 2 ports. On top is the modified port opening. Bottom photo shows the stock port opening.	Left Side Corvette Manifold - 4 to 8 horsepower gain with our Modified Ram Horn Style Manifolds verse Stock Corvette manifold.	Right Side Corvette Manifold            Port openings on our Modified Manifolds are opened up to match a Fel-Pro #1404 exhaust gasket.

Part #	Description	Price each manifold
160-L	Stock 2.5" outlet Corvette manifold: 1 only left (drivers) side	95.00
160-R	Stock 2.5" outlet Corvette manifold: 1 only right (passenger) side	95.00
162S-L	Modified 2.5" outlet Corvette manifold. 1 only left (drivers) side	195.00
162S-R	Modified 2.5" outlet Corvette manifold. 1 only right (passenger) side	195.00
162S-R-X	Modified 2.5" outlet Corvette manifold. 1 only right side with functional choke tube	210.00
160-RB-1	Remove generator bracket on 1 Corvette exhaust manifold	30.00
160-RB-2	Remove generator bracket on 2 Corvette manifolds	55.00
160-2-Mod	2" outlet Corvette manifold, Modified. 1 only.  Right and left side are the same	195.00
New! Modified "Chevy II" type exhaust manifolds. These mini-Ram-Horn manifolds go over-the-top like the Corvette manifolds but angle back at a 45 degree angle for more frame clearance.

"Gasketless" Corvette Manifold Pipe Kits

The best way to start building your exhaust system.

Our "Gasketless" Pipe Kits include: gasketless adapter pipes (which fasten to the manifold), two mandrel formed 90° pipes & mounting hardware.

#164A Gasketless Pipe Kit A = Floating 1/4" thick flange B = Metal Sealing Ring welded to Pipe Adapter

NOTE: 2 1/2" outlet manifolds have a 3 1/16" bolt pattern on the outlet flange. The smaller 2" outlet manifolds have a 2 3/4" bolt pattern. The bolt pattern is measured from the center-to-center of the bolt holes on the outlet flange. Part # Description Price 164S Pipe Kit adapts 3" pipes to 2 1/2" Corvette & Modified Tru-Ram Exhaust Manifolds. $150.00 164A Pipe Kit adapts 2 1/2" pipes to 2 1/2" Corvette & Modified Tru-Ram Exhaust Manifolds. 150.00 164AX Pipe Kit adapts 2 1/2" pipes to the smaller 2" outlet Corvette manifolds. 150.00 164AF 2 1/2" Gasketless Adapter Pipe: Metal sealing ring tig welded to pipe provides the sealing and the 1/4" thick flange provides the clamping power. Each. 1 side only. 45.00 164SF 3" Gasketless Adapter Pipe: Metal sealing ring tig welded to pipe provides the sealing and the 1/4" thick flange provides the clamping power. Each. 1 side only. 45.00 Interested in more horsepower for your race car? For details on the ultimate     2-into -1 Exhaust System click here.