LE vs AI
LE vs AI These are my options for H/c pakcages. I hear awsome results from LE, and i hear that AI is the next step under AFR? THe heads and cam will be going on a 383 stroker. If anyone can chime in with flow #s CC and anything else that is benifital for the thread that would be sick. 
I am picking AI in my quest to go fast. Flow #s are a useless internet comparison. A sewer pipe will flow it's *** off, but it won't make any HP! Too many other factors affect power, such as the actual shape and volume of the runner. My heads only flow 248 cfm at .500 lift. That flies in the face of most of the stuff that you will read on here.
BTW, I don't know too many guys that are willing to sacrifice potential over a few dollars. You get what you pay for
BTW, I don't know too many guys that are willing to sacrifice potential over a few dollars. You get what you pay for
I was lookin at LE2 h/c package. Talkd to Lloyd about it, then a trusty buddy of mine reminded me of AI, so i went to there site today.............and damn. Im now lookin at Stage 1 or 2 heads with a ported LT1 manifold, and the upgraded valvetrain package, with a Joe O cam. What do you guys think?
You should go search on CamaroZ28.com for posts just like this.
There have been many posts/arguments over this very subject.
But FYI; you get what you pay for and going fast costs money. Ai can set you up with a base setup, or a KILLER race setup. Send Ron an email with what your looking for, he will take care of you.
And my Ai setup with a medium sized nitrous cam/setup will break off an LE3 whatever. Dyno numbers only take you so far before your car has to back them up at the track. Nothing worse than dynoing 400, flowing 275intake and then running 12.2 @ 116mph.
There have been many posts/arguments over this very subject.
But FYI; you get what you pay for and going fast costs money. Ai can set you up with a base setup, or a KILLER race setup. Send Ron an email with what your looking for, he will take care of you.
And my Ai setup with a medium sized nitrous cam/setup will break off an LE3 whatever. Dyno numbers only take you so far before your car has to back them up at the track. Nothing worse than dynoing 400, flowing 275intake and then running 12.2 @ 116mph.
As i just found out, im going to need a big valvetrain upgrade too right? RR, pushrods, springs, valves? Ive also been reading that a set of AIs flows better then a set of AFRs right out of the box? I really want ported LT1 heads, so my choices are slim.....im still leaning toward stage 2-3 AIs, with the Compcams Valvetrain upgrade and the bronze package for my int. ex. walls. Chime in Guys!!!
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TECH Apprentice
Joined: May 2005
Posts: 349
Likes: 0
From: Mount Sterling KY
I just installed the LE2 package on my 96 Impala SS. WOW! What a difference. Lloyd is a great guy and will answer any questions you have no matter how many times you call him. He talked me out of the LE3 package due to the weight of my car. That is what sold me on Lloyd. He wants to give you the package you need for your application not just out to sell you a package to make money!!!!!!!!! Thumbs up to Lloyd 
HVY SS
HVY SS
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Originally Posted by hvyss
I just installed the LE2 package on my 96 Impala SS. WOW! What a difference. Lloyd is a great guy and will answer any questions you have no matter how many times you call him. He talked me out of the LE3 package due to the weight of my car. That is what sold me on Lloyd. He wants to give you the package you need for your application not just out to sell you a package to make money!!!!!!!!! Thumbs up to Lloyd
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Bret
Banned
Joined: Nov 2004
Posts: 196
Likes: 0
From: Easley, SC
Originally Posted by C_Rules
All of Lloyd's numbers are based on rwhp while AI gives you flywheel numbers unless stated otherwise. Just keep that in mind when your comparing the two.
Dude, no offense, but thats waaaaaaay off.
I made over 420 rwhp with some issues with AI's stuff. Should make in the 450-ish range this time, especially if I want that case of beer from Bret.
TECH Fanatic
Joined: Oct 2003
Posts: 1,101
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any links to AI site? never herd of them.
i had this guy do mine.
http://www.cylinderheadspecialties.com/
intake exhuast
.100 71.5 60.8
.200 142.5 109.2
.300 198.9 135.6
.400 235.2 162.0
.500 268.6 178.6
.550 276.0 183.8
.600 280.4 189.5
.650 282.8
thats his stage 2 head with a 2.00 and 1.56 valve
i had this guy do mine.
http://www.cylinderheadspecialties.com/
intake exhuast
.100 71.5 60.8
.200 142.5 109.2
.300 198.9 135.6
.400 235.2 162.0
.500 268.6 178.6
.550 276.0 183.8
.600 280.4 189.5
.650 282.8
thats his stage 2 head with a 2.00 and 1.56 valve
Originally Posted by blkchevyz
any links to AI site? never herd of them.
i had this guy do mine.
http://www.cylinderheadspecialties.com/
intake exhuast
.100 71.5 60.8
.200 142.5 109.2
.300 198.9 135.6
.400 235.2 162.0
.500 268.6 178.6
.550 276.0 183.8
.600 280.4 189.5
.650 282.8
thats his stage 2 head with a 2.00 and 1.56 valve
i had this guy do mine.
http://www.cylinderheadspecialties.com/
intake exhuast
.100 71.5 60.8
.200 142.5 109.2
.300 198.9 135.6
.400 235.2 162.0
.500 268.6 178.6
.550 276.0 183.8
.600 280.4 189.5
.650 282.8
thats his stage 2 head with a 2.00 and 1.56 valve
I have pretty much the same heads from the same place, but mine flowed 270 @ .600 because they don't have the badass valves in them (at least he told me thats why they don't flow quite as good as yours) I dont know how they run yet cause I haven't got the motor back in the car yet. But if your #s are any indication, I should be happy
Now im leaning back toward LE, i hear AI heads are nice, but then you have to do a **** load more upgrades, were as LE you dont? And does anyone know how much it cost to send in ur heads to LE? Its 400 for AI, i dont wana bother lloyd anymore then i ahve to he is busy.
www.totalengineairflow.com
did the heads on my combo.... i decided to try the current cam in this list of mods
1st pass of the nite
11:14@121.6 1.57 60ft
2nd pass of the nite
11:06@122.8 1.54 60ft 7.03@97.45 left aprox 6600 on a dump
3rd pass of nite and last pass it was hot lapped
11:06@122.54 1.55 60ft 7.04@97.3 was really near the limiter at 6900 and dumped again
1995 Z28 6spd
Ed Wright dyno tuned and track tweaked.
eagle 4340 6.0 h beam rods.
SRP forged flat top's -5cc dish.
eagle 4340 3.75 1 pc rear main crank.
total engine airflow LT1 castings stg 2 CNC ported.
GM847 hyd roller, comp pro mag 1.6 rr's,BBK 58mm TB.
gasket matched intake w/ 42lb SVO injectors, z06 maf.
stock T56 with mcloud twin disc clutch, pro 5.0 shifter w/LSS.
moser 12 bolt w/4:11's 33 spline w/ full spool.
all BMR suspension.
spohn adj TA.
hal 90/10 r-series w/ drag springs, comp eng rear 3-way adj shock.
15x8 telstar w/5" bs, hoosier 28x10x15 full slick 15x4 fronts.
glasstek 4" cowl hood bolt on.
did the heads on my combo.... i decided to try the current cam in this list of mods
1st pass of the nite
11:14@121.6 1.57 60ft
2nd pass of the nite
11:06@122.8 1.54 60ft 7.03@97.45 left aprox 6600 on a dump
3rd pass of nite and last pass it was hot lapped
11:06@122.54 1.55 60ft 7.04@97.3 was really near the limiter at 6900 and dumped again
1995 Z28 6spd
Ed Wright dyno tuned and track tweaked.
eagle 4340 6.0 h beam rods.
SRP forged flat top's -5cc dish.
eagle 4340 3.75 1 pc rear main crank.
total engine airflow LT1 castings stg 2 CNC ported.
GM847 hyd roller, comp pro mag 1.6 rr's,BBK 58mm TB.
gasket matched intake w/ 42lb SVO injectors, z06 maf.
stock T56 with mcloud twin disc clutch, pro 5.0 shifter w/LSS.
moser 12 bolt w/4:11's 33 spline w/ full spool.
all BMR suspension.
spohn adj TA.
hal 90/10 r-series w/ drag springs, comp eng rear 3-way adj shock.
15x8 telstar w/5" bs, hoosier 28x10x15 full slick 15x4 fronts.
glasstek 4" cowl hood bolt on.
Joined: Nov 2001
Posts: 10,023
Likes: 6
From: LT1 land...the "409" of the 90s!
Both are good choices. I started with Lloyd first andhe has ALWAYS treated me right. At this time I have a set of LE-X heads. You can't buy them nore would you want to unless you were in the position I was in. If you go this far just start with AFRs and have them ported.
Then again not many stock LT1(yes LT1) castings flow well over 290cfm at .600
Phil at AI is a great guy and really knows what he is doing. I just have not had a chance to use him yet. We have chatted many times over the years
Then there is Brett...oh wait he was not a choice
BTW Brett we fired up the first proto type intake this weekend!! it runn's great and to my suprise has a butt load of bottom end! I figured with 220cc AFR,238/245 cam and the big intake it might be lazy but it is snappy as hell!
Then again not many stock LT1(yes LT1) castings flow well over 290cfm at .600
Phil at AI is a great guy and really knows what he is doing. I just have not had a chance to use him yet. We have chatted many times over the years
Then there is Brett...oh wait he was not a choice
BTW Brett we fired up the first proto type intake this weekend!! it runn's great and to my suprise has a butt load of bottom end! I figured with 220cc AFR,238/245 cam and the big intake it might be lazy but it is snappy as hell!
Originally Posted by 1993CaMaRoZ28ofIdAhO
Now im leaning back toward LE, i hear AI heads are nice, but then you have to do a **** load more upgrades, were as LE you dont? And does anyone know how much it cost to send in ur heads to LE? Its 400 for AI, i dont wana bother lloyd anymore then i ahve to he is busy.
You seem to be confusing core charge and the price to ship heads. Core charge is the refundable price you are charged if you want your heads sent up front. You would send your stock heads to the company after you recieved the ported heads so that there is no down time. At that point the core charge is refunded. Shipping on the other hand is roughly $40-50 (depending on distance and such) and is required no matter where you send your heads to be ported.
As for additional things or lacking things; the heads come complete from both vendors. As explained above, they are "ready" to bolt on. Both will require "additional ****" to make them preform as advertised. Accompanying parts are a given with heads...no matter where they come from.
Good luck with your choice...but you might want to continue researching before you choose either vendor.