Highest HP AFR 205 car to date...
Highest HP AFR 205 car to date... Stock displacement, normally aspirated hydraulic roller motor with OUT OF THE BOX 205's....(not 225's!)
How about 535 RWHP with 482 Ft/lbs....insane #'s even taking into account the lightweight road race style clutch set-up which obviously killed his 60 foot times and ability to put up a 9 second ET slip...
BUT...how about 140.3 MPH crossing the traps!!!
Check out the link below from the CF...
http://forums.corvetteforum.com/showthread.php?t=948001
Regards,
Tony M.
How about 535 RWHP with 482 Ft/lbs....insane #'s even taking into account the lightweight road race style clutch set-up which obviously killed his 60 foot times and ability to put up a 9 second ET slip...
BUT...how about 140.3 MPH crossing the traps!!!
Check out the link below from the CF...
http://forums.corvetteforum.com/showthread.php?t=948001
Regards,
Tony M.
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?
Pouria Savadkouei
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Originally Posted by Chris ARE 385
and your point is? 
I run 11.8:1 on 93 octane all year long with no problems...
I run 11.8:1 on 93 octane all year long with no problems...
Originally Posted by gator's 99TA
could you explain what is wrong with 12/1 compression? dont tell me you think that requires race gas lol.
Teching In
Joined: Oct 2004
Posts: 23
Likes: 0
Originally Posted by Phil99vette
depending on the cam you can run it with PUMP GAS...
Damn, Man that Vette is smoken!
I have a 03 Zo6, With H/C With Zo6 Heads on it.. All motor with all stock bottom-end. 473Rwhp 430Rwtq From a 346Cid
12 to 1 compression is not that big of a deal. Still able to run on pump with the right cam and tune. But for max performance sure...a lil 104 never hurt. Its not like if it were 11.7 to 1 compression it would have been a dog.
I believe from the link posted they were only spinning to low to mid 7000's in rpm range. Its still a hyd cam.
VERY impressive. A set of AFR 225s with a sold roller setup may be in my future.
I believe from the link posted they were only spinning to low to mid 7000's in rpm range. Its still a hyd cam.
VERY impressive. A set of AFR 225s with a sold roller setup may be in my future.
I heard the same thing....
Originally Posted by VTESPEED
Word has it that they were AFR 205 heads that were fully ported...
These heads were out of the box AFR 205's....red labeled to Wylie Texas to try and give Lou enough time to get the head swap done in time for the event.
The engine made peak HP at 67-6800 and if I recall was still producing 500 RWHP as high as 7500. The torque is especially brutal for such a small displacement engine. Those kind of torque numbers would convert to approximately 550 ft/lbs. on an engine dyno.
By the way, I certainly never portrayed this build-up as a "street" engine by any means....I brought it to everyone's attention purely to feature what is possible and quite frankly the results are still impressive all things considered, BUT....the bottom line is that this is still a normally aspirated 346 with a hydraulic roller cam. You COULD actually put it in a very aggresive week-end warrior style vehicle without a problem....except for scaring the neighbors when you fired it up to drive it around the block.
One thing is for sure, this build-up certainly exploits and taps into the well of power available from our street friendly 205's....They are "the little heads that could" and AFR couldn't have been happier with the recent results posted from Lou's car. Could it be there is more to making power than large ports with big "advertised" peak flow numbers???...Naaaaaaah....thats just an unfounded rumor
Tony M.
Originally Posted by Tony Mamo @ AFR
Yes...you are right....they were FULLY ported on AFR's 5 axis CNC porting equipment.
These heads were out of the box AFR 205's....red labeled to Wylie Texas to try and give Lou enough time to get the head swap done in time for the event.
The engine made peak HP at 67-6800 and if I recall was still producing 500 RWHP as high as 7500. The torque is especially brutal for such a small displacement engine. Those kind of torque numbers would convert to approximately 550 ft/lbs. on an engine dyno.
By the way, I certainly never portrayed this build-up as a "street" engine by any means....I brought it to everyone's attention purely to feature what is possible and quite frankly the results are still impressive all things considered, BUT....the bottom line is that this is still a normally aspirated 346 with a hydraulic roller cam. You COULD actually put it in a very aggresive week-end warrior style vehicle without a problem....except for scaring the neighbors when you fired it up to drive it around the block.
One thing is for sure, this build-up certainly exploits and taps into the well of power available from our street friendly 205's....They are "the little heads that could" and AFR couldn't have been happier with the recent results posted from Lou's car. Could it be there is more to making power than large ports with big "advertised" peak flow numbers???...Naaaaaaah....thats just an unfounded rumor
Tony M.
These heads were out of the box AFR 205's....red labeled to Wylie Texas to try and give Lou enough time to get the head swap done in time for the event.
The engine made peak HP at 67-6800 and if I recall was still producing 500 RWHP as high as 7500. The torque is especially brutal for such a small displacement engine. Those kind of torque numbers would convert to approximately 550 ft/lbs. on an engine dyno.
By the way, I certainly never portrayed this build-up as a "street" engine by any means....I brought it to everyone's attention purely to feature what is possible and quite frankly the results are still impressive all things considered, BUT....the bottom line is that this is still a normally aspirated 346 with a hydraulic roller cam. You COULD actually put it in a very aggresive week-end warrior style vehicle without a problem....except for scaring the neighbors when you fired it up to drive it around the block.
One thing is for sure, this build-up certainly exploits and taps into the well of power available from our street friendly 205's....They are "the little heads that could" and AFR couldn't have been happier with the recent results posted from Lou's car. Could it be there is more to making power than large ports with big "advertised" peak flow numbers???...Naaaaaaah....thats just an unfounded rumor
Tony M.
TECH Junkie
Joined: Jan 2002
Posts: 3,015
Likes: 0
From: At the office
Very nice results! I'm sure the massive cam they're running is bleeding off some of that compression.....
Massive cam, lots of timing, drag car, lots of compression, little weight, yet I'm still flabbergasted that it trapped 140mph!!
Just curious, do you know how much timing the car was running on?
You guys put together a solid race car!
Massive cam, lots of timing, drag car, lots of compression, little weight, yet I'm still flabbergasted that it trapped 140mph!!
Just curious, do you know how much timing the car was running on?
You guys put together a solid race car!
Im not sure where everyone assumes that this is an extreme engine package.
It uses nothing more than off the shelf parts with a good tune and a cam that is well matched to the heads. It is still a hydraulic roller utilizing a Comp 875-16 roller lifter.
I can list all the parts in the world for people to copy but there is more than just the parts. Its the attention to detail. It is the extra time on the dyno we spent tuning and changing the cam timing ON THE DYNO the 2 nights before at 2 AM. Nothing about this setup was "good enough" We didnt want to go 130, we wanted to go 135. The highest MPH for any 6 speed 346 car. We sure did that to say the least.
AFR Box stock heads
Comp Stock replacement pushrods
FAST 90 mil, untouched
LG Custom Hyd. roller cam 610 max lift.
12:1 CR
We were turning 73-7500 all day on the 921 springs.
I will try to get a graph up soon.
It uses nothing more than off the shelf parts with a good tune and a cam that is well matched to the heads. It is still a hydraulic roller utilizing a Comp 875-16 roller lifter.
I can list all the parts in the world for people to copy but there is more than just the parts. Its the attention to detail. It is the extra time on the dyno we spent tuning and changing the cam timing ON THE DYNO the 2 nights before at 2 AM. Nothing about this setup was "good enough" We didnt want to go 130, we wanted to go 135. The highest MPH for any 6 speed 346 car. We sure did that to say the least.
AFR Box stock heads
Comp Stock replacement pushrods
FAST 90 mil, untouched
LG Custom Hyd. roller cam 610 max lift.
12:1 CR
We were turning 73-7500 all day on the 921 springs.
I will try to get a graph up soon.
Last edited by Louis; Nov 16, 2004 at 11:52 PM.