In-Store Pickup Location Close

Summit Racing® Cast Iron Cylinder Heads for Small Chevy SUM-152123

Get Free Shipping with Your Order over $99!

Cylinder Head, Cast Iron, Assembled, 72cc Chamber, 165cc Intake Runner, Chevy, 302, 327, 350, 400, Each

  • Order this item and get free delivery and handling on your entire order! Oversize fees also waived on this item. Valid on orders shipped in the contiguous United States.

Estimated Ship Date: 9/22/2014 (if ordered today) Would you rather pick it up? Select Location

Brand: Summit Racing
Manufacturer's Part Number: SUM-152123
Part Type: Cylinder Heads
Summit Racing Part Number: SUM-152123

Cylinder Head Style: Assembled
Cylinder Head Material: Cast iron
Cylinder Head Finish: Natural
Combustion Chamber Volume (cc): 72
CNC-Machined Combustion Chamber: No
Intake Runner Volume (cc): 165cc
CNC-Machined Intake Runner: No
CNC-Machined Exhaust Runner: No
Intake Port Location: Standard
Exhaust Port Shape: Square
Exhaust Port Location: Standard
Spark Plug Style: Straight
Intake Valves Included: Yes
Intake Valve Diameter (in): 2.020 in.
Exhaust Valves Included: Yes
Exhaust Valve Diameter (in): 1.600 in.
Valve Springs Included: Yes
Maximum Valve Lift (in): 0.520 in.
Outside Diameter of Outer Spring (in): 1.250 in.
Damper Spring Included: Yes
Number of Springs Per Valve: Single
Retainers Included: Yes
Retainer Material: Steel
Locks Included: Yes
Lock Style: 7 degree
Valve Stem Seals Included: Yes
Valve Stem Seal Style: Umbrella
Rocker Arm Studs Included: Yes
Rocker Arm Nut Thread Size: 3/8-24 in.
Rocker Arms Included: No
Rocker Arm Nuts Included: No
Guideplates Included: No
Valve Cover Mounting Style: Center and perimeter bolt
Accessory Bolt Holes Drilled: Yes
Valve Guides Included: Yes
Valve Guide Material: Cast iron
Valve Seats Machined: Yes
Valve Seat Machine Style: 3-angle
Valve Seat Material: Ductile iron
Steam Holes Drilled: No
Oiling Style: Through pushrod
Machined for O-Ring: No
Heat Crossover: Yes
Quantity: Sold individually.
Notes: Will accommodate center bolt valve covers with minor modifications. Features ductile iron seats on exhaust ports only for use with unleaded gas. Machine work must be done to accommodate guideplates.
In-Store Pickup: Choose In-store pick-up (OH, GA, NV) on our web site.

Think you have to scour the local bone yards to find a decent set of GM's old double hump or fuelie cylinder head castings? Not true. In fact, we've brought back classic Chevy performance in a big way with these ready-to-run heads for small block Chevy. Our versions of the popular GM cylinder heads offer great performance for less than it would cost to rebuild an old set of double hump castings.

Warranty

Most Helpful Reviews Review this Product

7 Customer Reviews for Summit Racing SUM-152123 - Summit Racing® Cast Iron Cylinder Heads for Small Chevy

Average Customer Review

5 Star

(6)

4 Star

(1)

3 Star

(0)

2 Star

(0)

1 Star

(0)
+See All 7 Reviews

good value for the price

Summit RacingSummit Racing Verified Purchase

heads worked really well in my boat application. machinist was impressed with the quality of the heads- (this guy builds sprint car engines). was cheaper buying new than reconditioning old heads. all the external accessories bolted up without issue

1 of 1 found this review helpful.

report abuse

Report Abuse Close

If you feel that this review is inappropriate and should be removed from the site, report it to us by clicking the "Report Abuse" button below.

Cancel

Reviewer: GEORGE from WA

Date: May 01, 2014

Appearance
Ease of Installation
Price/Value
Quality

Great value

Summit RacingSummit Racing Verified Purchase

These are super!! I have them on a 406 sb chevy and love the performance!

1 of 1 found this review helpful.

report abuse

Report Abuse Close

If you feel that this review is inappropriate and should be removed from the site, report it to us by clicking the "Report Abuse" button below.

Cancel

Reviewer: BERNARD from NM

Date: March 08, 2014

Appearance
Ease of Installation
Price/Value
Quality

WHY REBUILD?

Summit RacingSummit Racing Verified Purchase

It was 75.00 more for these heads then rebulding my old ones. When the boxs arrive the maker of these heads are written on the boxs. Wow was I suprised. Make sure you wash them and blow then good.

0 of 0 found this review helpful.

report abuse

Report Abuse Close

If you feel that this review is inappropriate and should be removed from the site, report it to us by clicking the "Report Abuse" button below.

Cancel

Reviewer: STEVE from WA

Date: September 04, 2014

Appearance
Ease of Installation
Price/Value
Quality

summit 152123

Summit RacingSummit Racing Verified Purchase

heads were great good casting over stock, only thing was wish they would have listed size of hole for temp sensor and plug

0 of 0 found this review helpful.

report abuse

Report Abuse Close

If you feel that this review is inappropriate and should be removed from the site, report it to us by clicking the "Report Abuse" button below.

Cancel

Reviewer: JAY from FL

Date: August 04, 2014

Appearance
Ease of Installation
Price/Value
Quality

Summit cast iron heads for SB Chevy

I haven't fired up my 355 sb yet, but the fit and finish of these heads are great. Love the "kidney" combustion chambers and big valves. Nice clean int/exh ports too. These heads should make incredible power in my '48 Willys CJ2A.

0 of 0 found this review helpful.

report abuse

Report Abuse Close

If you feel that this review is inappropriate and should be removed from the site, report it to us by clicking the "Report Abuse" button below.

Cancel

Reviewer: WILLIAM from CA

Date: July 02, 2014

Appearance
Ease of Installation
Price/Value
Quality

Some parts are not legal for sale or use in California on any pollution-controlled motor vehicles

Back To Results
Email this page Close
Close