LT HEADS

The follow LT heads Flow Numbers are guides only as these numbers come from various sources - meaning different flow bench test machines and opperators.

  

An LT1 can make more torque and horsepower with a set of Trick Flow aluminum cylinder heads. Designed for supercharged, nitrous, and stroker applications, Trick Flow aluminum cylinder heads for Chevrolet LT1 feature high flow 195cc intake ports, 75cc exhaust ports, and 62cc combustion chambers. They retain the use of stock sensors and fittings and are available in bare or fully assembled versions. Assembled heads include stainless steel 2.02" intake/1.60" exhaust valves, 1.46" double valve springs, retainers, locks, guideplates, and 3/8" rocker studs.

 

AFR 908 180cc LT1 Heads 56 to 74cc $1800

Lift Value:	Intake Flow (CFM):180cc		Exhaust Flow (CFM): 64cc
0.100	-		-
0.200	129		108
0.300	195		156
0.400	240		178
0.500	255		190
0.600	260		194

NOTE: Tests conducted at 28" of water (pressure).

AFR 1031 195cc LT1 Heads 56 to 74cc $1800

Lift Value:	Intake Flow (CFM):180cc		Exhaust Flow (CFM): 64cc
0.100	-		-
0.200	132		108
0.300	198		156
0.400	240		178
0.500	260		190
0.600	262		194

NOTE: Tests conducted at 28" of water (pressure).

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All Edelbrock aluminum cylinder heads feature threaded inserts in the rocker studs and exhaust manifold bolt holes for superior strength and durability, plus hardened seats, bronze valve guides, and fully machined valve cover rails for a more consistent gasket seal. They offer improved power throughout the rpm range for greater throttle response and top-end horsepower. The intake and exhaust runners are CNC-machine profiled for superior flow and performance. Performer RPM heads are fully assembled with stainless steel intake and exhaust valves with undercut stems, 2-ring positive oil control seals, rocker studs, hardened steel guideplates, valve springs, retainers, and keepers.

1.94" Intake Valve 1.55 Exhaust Valve

Edelbrock 170cc LT1 Heads 54cc $1200

Lift Value:	Intake Flow (CFM): 170cc		Exhaust Flow (CFM):
0.100	61		52
0.200	117		100
0.300	174		140
0.400	220		167
0.500	242		184
0.600	232		194

NOTE: Tests conducted at 28" of water (pressure).

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GM LT1 58cc Seasoned Rebuilt $900

Lift Value:	Intake Flow (CFM): 170cc		Exhaust Flow (CFM):
0.100	72		52
0.200	129		100
0.300	180		130
0.400	213		142
0.500	214		149
0.600	215		154

NOTE: Tests conducted at 28" of water (pressure).

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GM LT1 Ported Rebuilt 54cc Chambers $1300 exchange

Lift Value:	Intake Flow (CFM): 190		Exhaust Flow (CFM):
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0.100	70		49
0.200	145		109
0.300	203		145
0.400	241		169
0.500	265		183
0.600	277		190

NOTE: Tests conducted at 28" of water (pressure).

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GM LT4 56cc 12363287 $1550

This aluminum LT4 design head is the same as the 1996 production head except it has the LT1 rocker stud P/N 12552126 installed. This head has light weight 2.00" intake and 1.55" exhaust valves installed in this assembly. These heads can only be used on 1992 and later LT1 and LT4 engines.

Stock LT4 Heads 56cc

Lift Value:	Intake Flow (CFM): 170cc		Exhaust Flow (CFM):
0.100	-		-
0.200	147		109
0.300	197		133
0.400	230		159
0.500	250		172
0.600	243		177

NOTE: Tests conducted at 28" of water (pressure).

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TrickFlow 195cc LT1 62cc $1430

Lift Value:	Intake Flow (CFM): 195cc		Exhaust Flow (CFM): 72cc
0.100	51		58
0.200	136		98
0.300	191		136
0.400	230		163
0.500	253		177
0.600	254		190

NOTE: Tests conducted at 28" of water (pressure).

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 The LT4 Manifold Has Been DISCONTINUED

Used the New Edelbrock Airgap Manifold coming soon