CYLINDER HEADS

11/03/2025
- NEWS -

THE ROCKET 428 HEAD PROJECT IS A GO.
Twenty-Two (22+) names are now on the Production List.
Over the next couple weeks, I will sit down with Foundry and Machine Shop
to get a better idea of timing and cost.
Once I have that information, I will send an Invoice to each buyer requesting a $400 deposit and our best estimate for final cost and timing.
WE ARE STILL TAKING NAMES
for those that wish to purchase
the ROCKET-428
High Compression Flat Cylinder Head

THE PROJECT IS A GO.

Names that do not follow through with a deposit
within 30 days of invoice date will be removed
from the list and head numbers will be adjusted.

The casting and machine time frame is usually 4-5 months.
The estimated bottom line is expected
to be between $800 and $1,000 each.
Shipping is $35 in the USA.

To get on the list you may
call: 513-724-9000
email: [email protected] 
mail to: Scalded Dog Speed Parts
3860 Cain Run Rd
Batavia OH 45103
 with your full contact info.
You will be invoiced for the deposit.

DEPOSITS:
Deposits are non-refundable once casting order has
been made. Full refund if we cannot produce.
All cost and time suggestion are approximate
and could change as we move forward.

ROCKET-428 CYLINDER HEAD
356-T6 Aluminum, 7:1 CR

Twin 8 plugs - Default)
or
Single 4 plugs - request)
Available

this head wins hill climbs!

The Rocket's combustion chambers are a match of our very successful Lion Speed Head IV.
The thick walls hold heat steady for even firing and extra metal is available to those that want to reshape to their own designs. The spark plug positions are designed for maximum flame front and have proven power on the dyno. Plugs on the left have more power.