Location: >3100>L82 and LG8 3100 Performance Cylinder Heads

L82 and LG8 3100 Performance Cylinder Heads

WOT-Tech only uses newer casting heads for the best performance. If you have the L82 3100 engine, your cylinder heads will not be suitable cores to return. If you have non roller rockers, rollers will need to be used or extra grinding on the lower intake will be required to clear the rocker arm.

L82 heads use a 1.72" intake valve and the LG8 uses a 1.76", which accounts for part of the difference on the intake.  There is a considerable difference between ports in the older castings, making them undesirable for anyone looking for efficiency and performance. 

 

Lift (inch)	Stock L82 Intake	Stock LG8 Intake	Stock L82 Exhaust	Stock LG8 Exhaust
0.050	31.9	31.6	25.3	27.1
0.100	55.1	55.4	51.0	53.0
0.150	78.4	78.1	76.3	78.4
0.200	100.7	101.3	102.6	98.4
0.250	122.4	125.4	122.2	116.8
0.300	143.6	148.1	135.8	133.8
0.350	162.9	170.0	145.9	144.4
0.400	179.2	187.8	153.0	151.5
0.450	192.6	201.1	157.2	155.1
0.500	200.6	210.1	159.8	157.0
0.550	NA	217.1	NA	158.8
0.600	NA	218.9	NA	160.4

 

Street Performance

Better than gasket matching, and more important than flow, velocity is the key to our street porting. The intake is left rough for the air/fuel mix quality, and shaped for the best flow without compromising any bottom or mid range power. These heads also offer the highest compression with no combustion chamber work other than the valve job and deburring.

Lift (inch)	Street 3100 Intake	Street 3100 Exhaust
0.050	32.6	25.4
0.100	55.9	55.3
0.150	79.9	84.8
0.200	105.0	106.1
0.250	130.8	124.2
0.300	155.1	138.9
0.350	177.3	148.8
0.400	197.2	155.8
0.450	212.3	161.6
0.500	224.1	168.1
0.550	231.6	NA
0.600	232.8	NA

 

Street/Strip

Street/Strip is the best explanation possible for what these heads represent.  Perfect for the street, perfect for the dragstrip.  These are excellent for both naturally aspirated and boosted applications.  Velocity is still key, with flow taking a higher priority over slight compression loss due to the redesigned combustion chamber.  These heads were used to put down 222whp with a perfectly streetable 3400 swapped Malibu.  You can check out more on this vehicle on the 60DegreeV6 site 

 

Lift (inch)	Street/Strip 3100 Intake	Street/Strip 3100 Exhaust
0.050	35.3	25.2
0.100	63.4	51.8
0.150	89.9	87.6
0.200	116.7	112.6
0.250	142.9	131.2
0.300	166.7	148.1
0.350	187.3	158.4
0.400	203.6	167.1
0.450	217.4	174.0
0.500	227.7	178.8
0.550	235.2	NA
0.600	237.3	NA

 

Race/Boost

Specifically designed for high output engines either NA or turbo/supercharged.  These heads offer the greatest flow when paired with matching WOT-Tech Competition Series manifolds.

Lift (inch)	Race 3100 Intake	Race 3100 Exhaust
0.050	35.0	25.2
0.100	65.9	51.8
0.150	94.5	87.6
0.200	124.8	112.6
0.250	152.6	131.2
0.300	177.6	148.1
0.350	194.7	158.4
0.400	211.3	167.1
0.450	224.0	174.0
0.500	235.9	178.8
0.550	240.4	NA
0.600	244.1	NA

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Image	Name	Price
	L82 and LG8 3100 Street Performance Heads Quality heads for any budget rebuild/performance build.  Why take a chance on improving performance when you could just as easily hurt your flow, efficiency (mpg), and throttle response from a DIY gasket match job.    These street performance heads are the result of man…	$599.99
	L82 and LG8 3100 Street/Strip Performance Heads Why take a chance on improving performance when you could just as easily hurt your flow, efficiency (mpg), and throttle response from a DIY gasket match job.    These street/Strip performance heads are the result from years of R&D on a flowbench to find the best flo…	$989.99
	L82 and LG8 3100 Race/Boost Heads For High RPM NA and Turbo/Supercharged applications only!  These heads are designed for flow, without compromise.  We spared no expense in the R&D phase, ruining many manifolds and heads in the process to be certain nothing was overlooked.  While you may in fact fit a 1.84/1.52 va…	$1399.99