IMCA/Wissota EQ Sport Mod Spec Chevy Assembled 76cc Cylinder Head

Description

This head is engraved with IMCA logo and serial numbered by Engine Quest to make it approved for use in IMCA classes that allow the CH350I cylinder head, 76 cc combustions chamber and 176 to 178 cc intake runners deliver consistent performance, COMP version (Complete assembled) includes stainless steel valves, performance valve springs, retainers, keepers, and 3/8" screw in studs, SM version (Sport Mod) also has upgraded Isky valve springs part number 450235D and lightweight Ferrea tool steel retainers, SC version (Stock Car) also has upgraded Isky valve springs part number 450235D, lightweight Ferrea tool steel retainers, and max flat milled w/ intake surface corrected
IMCA/Wissota EQ Sport Mod Spec Chevy Assembled 76cc Cylinder Head
Sku # 9154622-COMP
Mfr. Part # 9154622-COMP
Condition
New
Brand
Speedway Motors
Sold
Each
Details
Notes
This cylinder head in stock form has push rod slots in the head similar to a stock GM cylinder head, therefore, no guide plates are needed or utilized. If guide plates are added or utilized, you will need to drill out the pushrod slots for clearance purposes to allow for the push rod guide plate function.
Assembled version will include the following:
COMP - Utilizes Speedway valve springs 180-671515 and 915-39741 retainers.
SM - The Sport Mod version has upgraded Isky valve springs 450-235D, tool steel retainers and spring locators.
SC - The Stock Car version has the same Isky valve spring components as the SM unit and also has been surfaced to max out the compression rule for the IMCA Stock Car.
Info
This head is engraved and serial numbered by Engine Quest for IMCAs Sport Mods, Stock Cars, and Hobby Stocks. Now approved for WISSOTA Midwest Mods and Street Stocks.
Assembled heads will include the following:
3/8" screw in studs # 915-99156
76 cc combustion chamber
176-178 cc intake runners
Straight plug
1.94/1.50 intake/exhaust valves #910-14140-1 & 910-14145-1
Available bare or assembled and blue printed
Heavy duty valves
(COMP) version includes Retainers and locks # 915-39741 & 577-555
(COMP) version includes 1.25" high-performance valve springs # 180-671515
(SM-Sport Mod) version includes Isky Springs # 450-235D, 7 deg locks and Ferrea tool steel retainers
(SC-Stock Car) version includes Isky Springs # 450-235D, 7 deg locks and Ferrea tool steel retainers, Max Flat Milled w/ intake surface corrected
Three angle valve job
Item Details
Straight Plug
1.94/1.50 Intake Valves
IMCA Approved.
WARNING: Cancer and Reproductive Harm -- p65Warnings.ca.gov
California Customers: This part has been identified as emissions sensitive and can only legally be installed on race-use only vehicles, off-road-use only vehicles, or pre-1965 vehicles in the State of California in accordance with the California Air Resource Board (CARB) requirements. Once your order is placed you will be contacted by Speedway Motors within 2 business days so that you can certify that you will only use such parts on these types of vehicles in California.
Specs
Sold in Quantity
Each
Finish
Natural
Cylinder Head Style
Assembled
Spark Plug Style
Straight
Material Type
Cast Iron
Combustion Chamber Volume
76cc
Intake Port Shape
Rectangle
Exhaust Port Shape
Square
Intake Valve Diameter
1.940
Exhaust Valve Diameter
1.500
Intake Runner Volume Range
170cc - 179cc
Combustion Chamber Volume Range
70cc - 79cc
Intake Runner Volume
176/178cc
MFG. Part #
9154622-COMP
Stud Diameter
0.380
Reviews
I would purchase this product again
Rated
by Chuck on February 19, 2021
Summary:
Best head for Imca Stock car
Yes, I recommend this product.
I would buy again
Rated
by butch on March 08, 2019
Summary:
nicely done, ready to bolt on
Yes, I recommend this product.
good heads
Rated
by s10 on November 12, 2018
Summary:
install was easy even in the 95 s10. However, the number 3 &4 sparkplug hole is centered between the head bolts which is slightly different from the previous heads we had. Holes were further aft. Only reason I bring this up is that we are using the Sanderson shorty headers which now get close to the #3 spark plug and prevents me from using a socket to tighten the spark plug. The boot on that plug is almost touching the header, but so far it's okay.
Yes, I recommend this product.
Very nice heads. Cost is very reasonable.
Rated
by Pete on May 02, 2017
Summary:
Very nice heads.
Pros:
Easy To Set Up
Yes, I recommend this product.
I would buy this product again
Rated
by jim on January 10, 2017
Summary:
The complete head does no longer come with guide plates
Cons:
Push Rod guide plates
Pros:
Rugged Construction
Yes, I recommend this product.
Related Items / Suggested Parts
Wissota-Spec 1 Inch 4-Barrel Carburetor Spacer
Autolite AR133 14mm Racing Spark Plug-5/8 Hex, Tapered, .46 Reach, Med
Autolite AR134 14mm Spark Plug-5/8 Hex Taper Seat .46-Slightly Hotter
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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 69 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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