Introducing, the VEPR 18° SBC “Double Hump” head! We have brought the “twin humps” legend back to its former glory as a bolt-on SBC head capable of producing over 700hp, OFF THE SHELF! The VEPR 18DH was designed to give the performance SBC guy a cylinder head option that will make the power of modern-day GM engines, but do it with a gen-one Mouse!

The VEPR 18DH is designed to feed a wide range of SBC engine combinations throughout a given RPM range. The trend, over the last 10 years, has been big-cube small blocks. This head is perfect

for 3.875” and 4” stroke SBC engine combinations and for the customer that wants a 650HP+ small block Chevy!  These heads, as-cast, are 237cc and come with a 2.165” intake valve and 1.6” exhaust valve inside the 70cc combustion chamber. The head is a 40/60 valve location and uses 23° valvetrain

components. It requires a .150” offset, stud-mount rocker on the intake valves and an on-center rocker arm on the exhaust valves.  The intake flange is factory GM spec at 5°, making these heads compatible with all GM intake manifolds. The exhaust side of the  heads feature D-shaped exhaust ports and has dual bolt-patterns for the standard SBC header flange and the Stahl pattern as well.  These heads use standard port locations.

Valvetrain  Options:

.625 Lift Hyd Roller Valvetrain                               

Includes 2.165 and 1.6 x 11/32” Stem Stainless Valves

1.290OD Dual Springs 150# Seat with 10 Degree Locks and Retainers

7/16” Chrome Moly Rocker studs and 3/8”s 2 PC guide plates

Chrome Moly Spring locators and Viton Seals

.670 Lift Solid Roller Valvetrain                                     

Includes 2.165 and 1.6 x 11/32” Stem Stainless Valves

1.550OD Dual Springs 220# Seat with 10 Degree Locks and Retainers

7/16” Chrome Moly Rocker studs and 3/8”s 2 PC guide plates

Chrome Moly Spring locators and Viton Seals

.750 Lift Solid Roller Valvetrain                                       

Includes 2.165 and 1.6 x 11/32” Stem Stainless Valves

1.550OD Dual Springs 250# Seat with 10 Degree Locks and TI Retainers

7/16” Chrome Moly Rocker studs and 3/8”s 2 PC guide plates

Chrome Moly Spring locators and Viton Seals                        

Piston and Ring Kit:

Our pistons are designed using the latest technology in piston mfg. Machined from T-6 heat treated  2618 Alloy they feature coated tops and skirts, gas porting, 1.2/1.2/3.0MM Ring Pack, 4340 Tool Steelcoated pins with wire loc retainers.  All pistons have a 2.3cc Dome for a compression of 10.7 to 12.5 depending on milling options.  Our rings are made from steel featuring Gas Nitrided Top, Phosphate Coated 2^nd, and Chrome Oil ring. 

**If you would like to add our Piston and Ring Kit, please select the Piston and Ring Kit in Mayhem Additional Parts section and complete the sub options below that.**