86bluecobra
Advanced Member
afr 165's and holley systemax II heads i would say are pretty close.
AFR 165 Street 165/69 1.900/1.600
123/118 .200 lift intake/exhaust
186/153 .300
225/178 .400
243/185 .500
250/191 .600
Holley 5.0 Systemax 175.5/71 1.940/1.600 61 63/56
124/100 .200 lift inatke/exhaust
174/130 .300
206/155 .400
221/167 .500
233/176 .600
With a little work the holley could out flow the afr's and they are a direct bolt on. Seems like a lot less work to get them to flow as well as the afr's then to do all the valve clearence cutting in the pistons.
AFR 165 Street 165/69 1.900/1.600
123/118 .200 lift intake/exhaust
186/153 .300
225/178 .400
243/185 .500
250/191 .600
Holley 5.0 Systemax 175.5/71 1.940/1.600 61 63/56
124/100 .200 lift inatke/exhaust
174/130 .300
206/155 .400
221/167 .500
233/176 .600
With a little work the holley could out flow the afr's and they are a direct bolt on. Seems like a lot less work to get them to flow as well as the afr's then to do all the valve clearence cutting in the pistons.