PARTS EXPERTS
FAST SHIPPING
AUSSIE OWNED
BEST PRICES
item: Proflow Cylinder Heads LS SuperMax 273 Aluminium Rect Bare Cylinder Heads (6Bolt) 70cc Chamber 273cc 15deg LS3 For Chevrolet For Holden Pair
Proflow does not sacrifice quality for a low price--you get both with our aluminium cylinder heads. The lightweight heads are cast from A-356 aluminium alloy with a large choice of engine, for SB & BB Chevrolet, LS Chev Holden Ford SB 289-351W, 302, 351 Cleveland 2V & 3V & BB FE, and Chrysler SB & BB. They have phosphorous bronze valve guides, and ductile iron valve seats for use with unleaded gas. They're also end-milled and drilled for accessories. The fully assembled heads have stainless steel valves, high performance valve springs, 7 degree valve locks, rocker arm studs, and guideplates. Perfect for your Mild or High performance Hot Rod. Use CC-6051 & 6053 valves
SPECIFICATIONS | |
| Combustion Chamber | 70 cc |
| Intake Port Volume | 273 cc |
| Exhaust Port Volume | 90 cc |
| Exhaust Port Dimensions | 1.47 (H) x 1.65 (W) |
| Spark Plug Location | OEM |
| Intake Valve Diameter | 2.165 |
| Exhaust Valve Diameter | 1.59 |
| Valve Stem Diameter | 8 mm |
| Valve Spring Pocket ID | 1.30 |
| Valve Guide OD | 0.502 (0.560 at base) |
| Maximum Valve Lift | 0.750 |
| Rocker Stud Thread Size | OE LS3 Style |
| Valve Angle | 15° |
| Deck Thickness | 0.625 |
Proflow does not sacrifice quality for a low price--you get both with our aluminium cylinder heads. The lightweight heads are cast from A-356 aluminium alloy with a large choice of engine, for SB & BB Chevrolet, LS Chev Holden Ford SB 289-351W, 302, 351 Cleveland 2V & 3V & BB FE, and Chrysler SB & BB. They have phosphorous bronze valve guides, and ductile iron valve seats for use with unleaded gas. They're also end-milled and drilled for accessories. The fully assembled heads have stainless steel valves, high performance valve springs, 7 degree valve locks, rocker arm studs, and guideplates. Perfect for your Mild or High performance Hot Rod. Use CC-6051 & 6053 valves
SPECIFICATIONS | |
| Combustion Chamber | 70 cc |
| Intake Port Volume | 273 cc |
| Exhaust Port Volume | 90 cc |
| Exhaust Port Dimensions | 1.47 (H) x 1.65 (W) |
| Spark Plug Location | OEM |
| Intake Valve Diameter | 2.165 |
| Exhaust Valve Diameter | 1.59 |
| Valve Stem Diameter | 8 mm |
| Valve Spring Pocket ID | 1.30 |
| Valve Guide OD | 0.502 (0.560 at base) |
| Maximum Valve Lift | 0.750 |
| Rocker Stud Thread Size | OE LS3 Style |
| Valve Angle | 15° |
| Deck Thickness | 0.625 |
| SKU | pf-PFEAHCLS3-273-6BOLT-BA |
| Brand | PROFLOW |
| Shipping Weight | 50.0000kg |
| Shipping Width | 0.700m |
| Shipping Height | 0.300m |
| Shipping Length | 0.700m |
AUD$158.52
or 4 payments of AUD$39.63 with
Info
AUD$166.39
or 4 payments of AUD$41.60 with
Info
AUD$49.47
or 4 payments of AUD$12.37 with
Info
AUD$71.58
or 4 payments of AUD$17.89 with
Info
AUD$299.00
or 4 payments of AUD$74.75 with
Info
AUD$40.53
or 4 payments of AUD$10.13 with
Info
AUD$46.20
or 4 payments of AUD$11.55 with
Info
ABN: 58 134 888 154
Follow Us On :
Encrypted Checkout
Copyright © 2025 CJ MOTOR
Add your favourites to cart
Select Afterpay at checkout
Log into or create your Afterpay account, with instant approval decision
Your purchase will be split into 4 payments, payable every 2 weeks
All you need to apply is to have a debit or credit card, to be over 18 years of age, and to be a resident of country offering Afterpay
Late fees and additional eligibility criteria apply. The first payment may be due at the time of purchase
For complete terms visit afterpay.com/terms
