284 cfm @550 on 1.94 valves?
Registered User
Joined: Jul 2001
Posts: 752
From: Double Oak TX
Re: 284 cfm @550 on 1.94 valves?
Originally Posted by vette40th
There are a few variables. Portwork is all subjective. very few people actually have R&D done on the actual flow characteristics. Big numbers, at what lift, flowbench etc etc. Look at LPE, TPIS, DRM and LLoyds. I bet the flow at low RPMS is very important to these guys as you still need to drive the thing with some low rpm response. I bet you could grind the living crap out of a set of heads and get 300cfm from LT1's. Doesnt mean squat till they are on a car and driven to a dyno for HP check, and the track, and street.
However............... they flow 260+ cfm @ only .400. It's the whole package that counts, not just peak flow numbers as you can set up a set of heads to flow well on the top end sacrificing the low lift numbers.
Registered User
Joined: Apr 1999
Posts: 753
From: Chandler AZ
Re: 284 cfm @550 on 1.94 valves?
Originally Posted by Camaro97USAF
Here's my #'s, on Trickflow heads with 2.02 intake valves.
Int exh
.100 75.6 67.3
.200 155 118
.300 210 156
.400 255 182
.500 285 191
.550 293 196
.600 296 200
.650 296 204
.700 298 208
Int exh
.100 75.6 67.3
.200 155 118
.300 210 156
.400 255 182
.500 285 191
.550 293 196
.600 296 200
.650 296 204
.700 298 208
Lets us know how your engine turns out with those heads!
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