We have many heads for Chevy Inline 6 in stock. The choices can be confusing. Factors to consider when choosing one of our heads.
1. Size of engine Bigger cubes can work better with larger valves. Stock Intake valves are 1.72, we upgrade to 1.84 or 1.94
2. Intended use of engine Casual cruiser 1.84, hotter engines 1.94
3. Cam lift and intended RPM. Our .530 lift spring works great with lower lifts such as .530 LIFT OR LESS stock, RV or Performance CAMS. RPM limit can vary depending on duration of cam and the lift. 5-5.5K RPM Higher RPM if less lift is used with a large duration cam. The .600 spring can rev even higher with smaller lift cams. We can equip our heads with any spring required for your service.
4. Intended compression ratio desired. There are many CR calculators on the web. Learn to use one. Most of our cams like 9-10.5 CR
So we offer a variety of CC chambers.
5.Roller rocker are suggested when lift exceeds .500
Some people notice the tiger striping on our heads. These are surfaced on a CNC machine instead of a dedicated head surfacer. The dedicated machines tilt the cutting head by .004" to only cut on the leading edge (like a lawn mower). The CNC has a perfectly aligned cutter head and will leave a trailing mark, such as seen on these. Rest assured these are perfectly flat and you cannot "feel" or measure and deviation from flat.
CORE HEADS ARE REQUIRED FROM YOU. VALUE WILL BE $100. IF YOU DO NOT HAVE A HEAD, YOU WILL PAY THE LIST PRICE. THE CORE WILL BE REFUNDED ONCE YOUR CORE IS RECEIVED. WE PAY SHIPPING ON THE CORE HEAD.
1. Size of engine Bigger cubes can work better with larger valves. Stock Intake valves are 1.72, we upgrade to 1.84 or 1.94
2. Intended use of engine Casual cruiser 1.84, hotter engines 1.94
3. Cam lift and intended RPM. Our .530 lift spring works great with lower lifts such as .530 LIFT OR LESS stock, RV or Performance CAMS. RPM limit can vary depending on duration of cam and the lift. 5-5.5K RPM Higher RPM if less lift is used with a large duration cam. The .600 spring can rev even higher with smaller lift cams. We can equip our heads with any spring required for your service.
4. Intended compression ratio desired. There are many CR calculators on the web. Learn to use one. Most of our cams like 9-10.5 CR
So we offer a variety of CC chambers.
5.Roller rocker are suggested when lift exceeds .500
Some people notice the tiger striping on our heads. These are surfaced on a CNC machine instead of a dedicated head surfacer. The dedicated machines tilt the cutting head by .004" to only cut on the leading edge (like a lawn mower). The CNC has a perfectly aligned cutter head and will leave a trailing mark, such as seen on these. Rest assured these are perfectly flat and you cannot "feel" or measure and deviation from flat.
CORE HEADS ARE REQUIRED FROM YOU. VALUE WILL BE $100. IF YOU DO NOT HAVE A HEAD, YOU WILL PAY THE LIST PRICE. THE CORE WILL BE REFUNDED ONCE YOUR CORE IS RECEIVED. WE PAY SHIPPING ON THE CORE HEAD.
Performance Heads
Sissell 1138 Cylinder Head 1.94/1.6 .600 lift
$3,200.00
$3,200.00
153 181 4 cyl Performance head 2.5 3.0 2438
$1,050.00
$1,050.00
230-250-292 1.84 6 cyl Performance head .530 lift for roller rockers 1005
$1,550.00
$1,550.00
230-250-292 1.84 6 cyl Performance head .530 lift for Roller rockers 1017
$1,600.00
$1,600.00
230-250-292 1.84 6 cyl Performance head .530 lift for Roller rockers 1018
$1,525.00
$1,525.00
230-250-292 1.94 6 cyl Performance head .530 lift for Stock rockers 1024
$1,500.00
$1,500.00
HEAD BOLTS 250 292 230 194 153 181
$25.00
$25.00
230-250-292 1.84/1.5 6 cyl Performance head .530 lift for Stock rockers 2417
$1,500.00
$1,500.00
230-250-292 1.84/1.6 6 cyl Performance head .530 lift for Stock rockers 2433
$1,500.00
$1,500.00
153 181 2.5 3.0 4 cyl 1.94 Performance head .600 lift for roller rockers 2439
$1,150.00
$1,150.00
230-250-292 1.94 6 cyl Performance head .600 lift for roller rockers 2434
$1,600.00
$1,600.00
230-250-292 1.94/1.6 6 cyl Performance head .530 lift for Stock rockers 2420
$1,500.00
$1,500.00
230-250-292 1.84/1.6 6 cyl Performance head .530 lift for Stock rockers 2421
$1,500.00
$1,500.00
230-250-292 1.94/1.6 6 cyl Performance head .530 lift for Stock rockers 2422
$1,500.00
$1,500.00
230-250-292 1.94 6 cyl Performance head .600 lift PES LUMP roller rockers 2424
$1,700.00
$1,700.00
230-250-292 1.94 6 cyl Performance head .530 lift for roller rockers 2425
$1,600.00
$1,600.00
230-250-292 1.94 6 cyl Performance head .530 lift for roller rockers 2426
$1,600.00
$1,600.00
230-250-292 1.94 6 cyl Performance head .530 lift for roller rockers 2432
$1,600.00
$1,600.00
230-250-292 1.94 6 cyl Performance head .530 lift for roller rockers 2427
$1,600.00
$1,600.00
230-250-292 1.94 6 cyl Performance head .530 lift for roller rockers 2440
$1,600.00
$1,600.00
230-250-292 1.84 6 cyl Performance head .530 lift for Stock rockers 2423
$1,500.00
$1,500.00
230-250-292 1.94 6 cyl Performance head .530 lift for roller rockers 2425
$1,600.00
$1,600.00