LE Trickflow 21* Flow numbers
Thread Starter
Staging Lane
Joined: Jan 2011
Posts: 82
Likes: 0
From: Massachusetts
LE Trickflow 21* Flow numbers Just got my 21* trickflows back from LE along with my ported intake. Numbers are as followed
Intake
.200 146
.300 204
.400 246
.500 279
.600 289
.700 296
Exhaust
.200 111
.300 146
.400 178
.500 196
.600 207
.700 214
2.0558/1.60 valves
Intake
.200 146
.300 204
.400 246
.500 279
.600 289
.700 296
Exhaust
.200 111
.300 146
.400 178
.500 196
.600 207
.700 214
2.0558/1.60 valves
Thread Starter
Staging Lane
Joined: Jan 2011
Posts: 82
Likes: 0
From: Massachusetts
Glad to hear those are good numbers! lol we'll see. As soon as it the motor is buttoned up and this snow clears so I can push my car in the my shop to finish some paint work (paint the chassis and the engine bay). Hopefully end of spring beginning of summer it will be running.
Nice to hear! I have had a pair of LE 21* trickflows and cam sitting in my garage for a year. Finally got my block to the machine shop last week lol. What are you doing with the bottom end?
Thread Starter
Staging Lane
Joined: Jan 2011
Posts: 82
Likes: 0
From: Massachusetts
Thread Starter
Staging Lane
Joined: Jan 2011
Posts: 82
Likes: 0
From: Massachusetts
Its a forged 383 with 12.2 to 1 compression. The cam specs are .243 .251 .597 .603 on 110the lsa
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Verdad Gallardo I ran 7.2s in the 1/8 with them as cast. Thats was will budget 355 and 234/238 cam. Im shootin for 6.8s now since le got ahold of them. Gona be runnin lot more convertor and cam tho.
Flow numbers and head CC numbers are vital in any engine program
Dynos will show you drivetrain loss, how efficiently you are getting the power to the ground along with the power curve of the motor for convertor sizing and gearing selection. All huge tools in building a great base line to fine tune the car at the track
I'm afraid many would disagree with you. Mostly experienced racers. Many things will make CFM numbers on a flow bench, but not make HP. Lloyd's stuff does run very well, however.
You do not use cylinder head flow bench CFM numbers to choose throttle body, headers, camshaft, torque converter or gears.
You do not use cylinder head flow bench CFM numbers to choose throttle body, headers, camshaft, torque converter or gears.
I'm afraid many would disagree with you. Mostly experienced racers. Many things will make CFM numbers on a flow bench, but not make HP. Lloyd's stuff does run very well, however.
You do not use cylinder head flow bench CFM numbers to choose throttle body, headers, camshaft, torque converter or gears.
You do not use cylinder head flow bench CFM numbers to choose throttle body, headers, camshaft, torque converter or gears.
one of the few that gets it
Person stated they don’t mean anything. I disagree with that. They mean more than nothing. The racing team I was on, we spent many hours on heads and flow design and many more hours on a dyno to win back to back championships. So in my humble opinion. I feel they are an excellent tool and a big player in making Hp.
I Know Ed is extremely knowledgeable when it comes LTx cars he has been around a super long time so I can’t argue with his knowledge. I don’t know who quick95LT1 is but he has a proven record as well. I hope to learn from these posters as they are some of the more knowledgeable ones from what I have seen from prior years.
My last motor was built based on the flow numbers of the intake, heads, with a matched cam and it did well (700/640) maybe this one will do better, Idk.
I Know Ed is extremely knowledgeable when it comes LTx cars he has been around a super long time so I can’t argue with his knowledge. I don’t know who quick95LT1 is but he has a proven record as well. I hope to learn from these posters as they are some of the more knowledgeable ones from what I have seen from prior years.
My last motor was built based on the flow numbers of the intake, heads, with a matched cam and it did well (700/640) maybe this one will do better, Idk.
Top cylinder head guys hardly talk CFM anymore. More cross sections, velocity maps/air speed and choke points. Get those right and CFM will take care of it's self. CFM numbers can be had without the other parameters being optimized but won't make as much power. Heard of CFE cylinder heads? Just about all the top NHRA Pro Stock teams have his heads, and a big chunk of NHRA Comp Eliminator. Call them up and ask if you bought a set of heads for your car, what they flow? :-) Last guy I know that did that was told "It doesn't matter!"
What race team did you work with?
What race team did you work with?
Top cylinder head guys hardly talk CFM anymore. More cross sections, velocity maps/air speed and choke points. Get those right and CFM will take care of it's self. CFM numbers can be had without the other parameters being optimized but won't make as much power. Heard of CFE cylinder heads? Just about all the top NHRA Pro Stock teams have his heads, and a big chunk of NHRA Comp Eliminator. Call them up and ask if you bought a set of heads for your car, what they flow? :-) Last guy I know that did that was told "It doesn't matter!"
What race team did you work with?
What race team did you work with?
The terms used in our shop were "velocity maps/air speed, choke points, CFM" as you stated. A lot of work was put into straightening the airflow.
I worked at NRP with Gil Nevarez. I used to do all the electrical work and Computer tuning on the cars. He now works at Shelby here in Las Vegas.
http://www.pscaracing.com/driverprof...streetgil.html
I also worked at Combination Motorsports. I did the same there. Bryan Herter was the one that showed me and instructed me on LT1/LS1 tuning back in late 2004. I learned a lot from him and did very well from it.
I have since moved on and now work for a contractor at Nellis AFB. Racing takes way too much time for the money made.
Last time I was at Reher & Morrison (been a couple of years now) Darren had two big SuperFlow benches sitting next to each other, with a flat aluminium plate bolted & sealed to the top of one. Took me a minute to notice the tube across the backs, plumbing them together for higher test depressions. One just used for more air. They now make flow benches capable of the extremely high test depressions that have become so popular. Darren is a smart, friendly guy who talks over most people's heads. (Cylinder heads too) :-)
Anyway, he does flow heads, he (and many other top cylinder head R&D guys) just don't chase CFM numbers.
And, the Profiler stuff he developed really are killer pieces.
Anyway, he does flow heads, he (and many other top cylinder head R&D guys) just don't chase CFM numbers.
And, the Profiler stuff he developed really are killer pieces.
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Joined: May 2011
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Top cylinder head guys hardly talk CFM anymore. More cross sections, velocity maps/air speed and choke points. Get those right and CFM will take care of it's self. CFM numbers can be had without the other parameters being optimized but won't make as much power. Heard of CFE cylinder heads? Just about all the top NHRA Pro Stock teams have his heads, and a big chunk of NHRA Comp Eliminator. Call them up and ask if you bought a set of heads for your car, what they flow? :-) Last guy I know that did that was told "It doesn't matter!"
What race team did you work with?
What race team did you work with?