ai trickflow or AFR
Registered User
Joined: Jul 2007
Posts: 321
This thread is ancient.
If I were in the market for heads, which I am, I would wait for results from some lloyd and AI ported 21* trickflows before making any purchase
. Don't forget to compare the Dart's as well!
They may be worth the wait.
If I were in the market for heads, which I am, I would wait for results from some lloyd and AI ported 21* trickflows before making any purchase
. Don't forget to compare the Dart's as well!They may be worth the wait.
Registered User
Joined: Apr 1999
Posts: 205
That's one hell of an endorsement for AFR. Probably put them into backorder status.
FYI.... The Trick Flows that I own done by Lloyd and Trevor flow:
Intake Exhaust (no pipe)
.300 204 151
.400 259 186
.500 291 209
.600 304 218
.700 308 224
This is with a 222 cc intake port, 2.08 intake valves and 1.625 exhaust flowed on a very conservative flow bench. Think it was with a 4.06 bore. The valves were backcut for enhanced low flow numbers vs higher lift flow numbers. Only have .635 lift....so why emphasize the top end except to post some big number?? Should also add this is with small chambers for higher compression as larger chambers yield a tad higher flow numbers.
These heads are two years old and if I were to do new ones, I'd look real strongly at Brodix or Dart and probably do titanium intake valves to make it easy on the springs.
FYI.... The Trick Flows that I own done by Lloyd and Trevor flow:
Intake Exhaust (no pipe)
.300 204 151
.400 259 186
.500 291 209
.600 304 218
.700 308 224
This is with a 222 cc intake port, 2.08 intake valves and 1.625 exhaust flowed on a very conservative flow bench. Think it was with a 4.06 bore. The valves were backcut for enhanced low flow numbers vs higher lift flow numbers. Only have .635 lift....so why emphasize the top end except to post some big number?? Should also add this is with small chambers for higher compression as larger chambers yield a tad higher flow numbers.
These heads are two years old and if I were to do new ones, I'd look real strongly at Brodix or Dart and probably do titanium intake valves to make it easy on the springs.
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Joined: Jun 2003
Posts: 3,557
From: Carol Stream, Il.
Registered User
Joined: Apr 1999
Posts: 205
Of course there is more things to consider when making good power for a street driven combination, but cylinder heads are at the top!
Last edited by pineapplesink6; Mar 11, 2009 at 11:01 AM.
Registered User
Joined: Jul 2001
Posts: 752
From: Double Oak TX
They were so "isn't impressive' that AFR wanted the heads to check out the port work. No dope.
They were done by a person who used work for Nickens Bro Pro Stock engine building shop. His numbers are very conservative, expecially to those of well know shops like Agostino whom you've done business with.
The heads I got from Agostino flowed about 50 cc less than his flow sheets said when sent of to B&B performance. Pretty easy to make up fake numbers, but that can make the real numbers look "isn't impressive."
Also keep in mind these heads are four years old, things have changed but the car is the highest hp N/A street driven Ltx C4 on the Corvette Forum. No dope. They did something right.
They were done by a person who used work for Nickens Bro Pro Stock engine building shop. His numbers are very conservative, expecially to those of well know shops like Agostino whom you've done business with.
The heads I got from Agostino flowed about 50 cc less than his flow sheets said when sent of to B&B performance. Pretty easy to make up fake numbers, but that can make the real numbers look "isn't impressive."
Also keep in mind these heads are four years old, things have changed but the car is the highest hp N/A street driven Ltx C4 on the Corvette Forum. No dope. They did something right.
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