LT1 Heads

All flow numbers performed at 28" of H20 unless otherwise specified

Intake Flow (CFM)

>
Source0.0500.1000.2000.3000.4000.4500.5000.5500.6000.6500.700
FIS - Stock LT134.062.4118.1166.4193.1199.1196.1194.6
TPIS - Stock LT158.0113.0167.0203.0212.0
HotRod - Stock LT1117.0165.0187.0195.0195.0
TPIS - Ported LT163.0129.0192.0238.0260.0258.0
TPIS - Stock LT456.0119.0179.0218.0241.0232.0
TPIS - Ported LT456.0123.0196.0235.0261.0276.0
AFR (advertised)129.0195.0240.0260.0262.0
AFR (actual out of box)124.0190.0230.0245.0248.0
AFR (TPIS clean-up)136.0200.0230.0251.0263.0
AFR LT4 (Standard port)
2.02/1.60 195cc port
70.6141.3194.7243.0274.3280.0
AFR LT4 (Comp. port)
2.05/1.625 195cc port
135201249280280282
MTI (GTP)193.0233.0262.0273.0
LPE264.0
LPE197236252261261
Blackstone71.0142.0194.0239.0262.0270.0
CNC Heads67.0124.0182.0233.0267.0270.0
DRM CNC
2.00/1.56
71.0144.0199.0237.0258.0267.0
GTP LT4 (race port)
2.02/1.585
147207262.5300312.9319.3
GTP LT4 (Stage II)
2.02/1.585
66.9137.5193.5236.3265.5274.2280.2
Morgan Motorsports
2.00/1.57
69.2136.7195.9230.4248.1261.9273.7284.4290.7287.4
Rolling Thunderz (Canfield)
2.05/?? 224cc port
86153211252273299303
Larry Kurek58.7124.6177.6219224.9222
Pat Musi64.9132187225240261262267267
Blackstone
(Cleanup on Doug Rippie CNC)
75141195233259269

Exhaust Flow (CFM)

Source0.0500.1000.2000.3000.4000.4500.5000.5500.6000.6500.700
FIS - Stock LT124.350.291.5120.4139.6142.8146.0147.6
TPIS - Stock LT147.097.0133.0152.0160.0
HotRod - Stock LT189.0121.0130.0133.0136.0
TPIS - Ported LT153.0107.0138.0171.0185.0194.0
TPIS - Stock LT447.0102.0140.0164.0176.0182.0
TPIS - Ported LT447.0106.0146.0168.0187.0196.0
AFR (advertised)108.0156.0178.0190.0194.0
AFR (actual out of box)117.0150.0171.0182.0191.0
AFR (TPIS clean-up)117.0150.0171.0182.0191.0
AFR LT4 (Standard port)
2.02/1.60 195cc port
51.7112.3142.0169.0185.2193.6
AFR LT4 (Comp. port)
2.05/1.625 195cc port
110157180202208212
MTI (GTP)152.0177.0189.0193.0
LPE211.0
LPE151185190207210
Blackstone65.0116.0154.0175.0188.0201.0
CNC Heads53.0114.0158.0187.0196.0199.0
DRM CNC
2.00/1.56
80.0132.0172.0194.0202.0208.0
GTP LT4 (race port)
2.02/1.585
126.8160196.5220232.9240.9
GTP LT4 (Stage II)
2.02/1.585
56.7112148.4183.7198.9205.8208.1
Morgan Motorsports
2.00/1.57
58.7113.2150.2183.8196.9205.5211.0215.5220.8223.3
Rolling Thunderz (Canfield)240.0
Larry Kurek42.487.3116.4143.2154.7165.4
Pat Musi52115162199.7202.8207209
Blackstone
(Cleanup on Doug Rippie CNC)
52108159187200208

Last Update: 5/30/00

Email: jshapiro@netgate.net