AFR Flow #s
Thread Starter
Safety Car
Joined: Dec 2002
Posts: 3,655
Likes: 24
From: Charleston SC
AFR Flow #s
I finaly got the flow sheet for my More performance LT4 AFR 195s and was a little disapointed but over all they are close to what I thought they should be. The heads have Ferrera 2.050 Intake and 1.600 exhaust valves and where CNCed by More. I thought they would be up 6-8 across the board but it I only got a 3-4 cfm increase over the AFR comp port claimed flow #s. I still think the 195s will provide some great low end TQ and I should make close to the 425 RWHP I was hoping for when i started this whole thing. I should be able to drop the motor in after I get back from vaction in a week and then it is off to get dyno tuned and we will see.
CFM@ 28''
.200------.300------.400----.500-----.550------.600-----.650
I----E------I---E----I---E----I----E---I----E----I---E----I---E
139-115---205-160-254-185-280-198-283-205-285-210-285-215
Stock Comp ported AFR LT4 195s
135 110 --201- 157-249 180-275-195 280- 202- 280 208- 282 212
CFM@ 28''
.200------.300------.400----.500-----.550------.600-----.650
I----E------I---E----I---E----I----E---I----E----I---E----I---E
139-115---205-160-254-185-280-198-283-205-285-210-285-215
Stock Comp ported AFR LT4 195s
135 110 --201- 157-249 180-275-195 280- 202- 280 208- 282 212
Melting Slicks
Joined: Sep 2000
Posts: 3,150
Likes: 1
From: Carlsbad, CA CA
Originally Posted by FD2BLK
I finaly got the flow sheet for my More performance LT4 AFR 195s and was a little disapointed but over all they are close to what I thought they should be. The heads have Ferrera 2.050 Intake and 1.600 exhaust valves and where CNCed by More. I thought they would be up 6-8 across the board but it I only got a 3-4 cfm increase over the AFR comp port claimed flow #s. I still think the 195s will provide some great low end TQ and I should make close to the 425 RWHP I was hoping for when i started this whole thing. I should be able to drop the motor in after I get back from vaction in a week and then it is off to get dyno tuned and we will see.
CFM@ 28''
.200------.300------.400----.500-----.550------.600-----.650
I----E------I---E----I---E----I----E---I----E----I---E----I---E
139-115---205-160-254-185-280-198-283-205-285-210-285-215
Stock Comp ported AFR LT4 195s
135 110 --201- 157-249 180-275-195 280- 202- 280 208- 282 212
CFM@ 28''
.200------.300------.400----.500-----.550------.600-----.650
I----E------I---E----I---E----I----E---I----E----I---E----I---E
139-115---205-160-254-185-280-198-283-205-285-210-285-215
Stock Comp ported AFR LT4 195s
135 110 --201- 157-249 180-275-195 280- 202- 280 208- 282 212
Corvette00096 recently posted his out of the box comp heads from AFR and the numbers were way better than what they advertised.
Melting Slicks
Joined: Oct 2000
Posts: 3,426
Likes: 4
From: Heidelberg PA
Cruise-In V Veteran
Originally Posted by zelement
Does the cost justify the performance increase? I know the comp heads are expensive but I know many that have tried to buy the street heads and do their own porting but still doesn't exceed AFR comp heads flow numbers out of the box.
Corvette00096 recently posted his out of the box comp heads from AFR and the numbers were way better than what they advertised.
Corvette00096 recently posted his out of the box comp heads from AFR and the numbers were way better than what they advertised.
Thread Starter
Safety Car
Joined: Dec 2002
Posts: 3,655
Likes: 24
From: Charleston SC
Originally Posted by zelement
Does the cost justify the performance increase? I know the comp heads are expensive but I know many that have tried to buy the street heads and do their own porting but still doesn't exceed AFR comp heads flow numbers out of the box.
Corvette00096 recently posted his out of the box comp heads from AFR and the numbers were way better than what they advertised.
Corvette00096 recently posted his out of the box comp heads from AFR and the numbers were way better than what they advertised.
