From what I have read, loyd elliot is by far the best.
The LT4 cam seems out dated and under powered.
Here is a copy from a post on camaroz28.com:
I see alot of people asking questions about Heads/Cam setups and i think that Lloyd Elliott's are very good deals. I have been talking with Lloyd for the past two weeks about what i should get for his setups and he has been extremely nice and helpful. He responds to my emails almost immediately. I highly recommend him to everyone. He says you must supply your own cores and once he recieves them, they will be done in 2 1/2 weeks.
The setup i am getting in the LE1.5 It is $1,400 plus shipping:
SI 2.02/1.60 valves
Comp 26918 bee hive springs
CM retainers
10 degree locks
LE 2 cam
Here is an Email he sent me with all of the Package information:
Below is a basic run down on the head and cam packages. The best package will depend on HP goals, budget, rear gears, stall size, future plans, emissions, driving style, tuning ability, existing components, etc., etc, A phone call would be best to make sure that we can talk through these things and get a package that will work like you are wanting it to and also make sure that you have the complimenting parts to make each set up work.
I offer cam and head packager from $1100 to $1650.
-----------------------------------------------------------------------------------------------------
LE1 cam pulls from 2000 to 6200 RPM and should make 370-390 RWHP with matching heads, 30 lb injectors, 52 TB, 1 3/4 LTs, No cats, good tuning, etc. The heads are ported using stock valves, performance valve job, back cut valves, CM 612 springs, retainers and locks, milling, cleaning and assembly. These heads flow about 255/180 with a 195 cc intake port and stock LT1's flow about 215/150 with a 170 cc intake port.
Heads and cam are $1100 (plus shipping). This has the RPM range of the Hot Cam, CC 305, etc. but makes more HP and TQ over these cams through out the entire RPM range. This will work with any gear and converter but the track times will be better with a stall and some gear.
-------------------------------------------------------------------------------------------------------
LE2 cam pulls from 2200 to 6500 RPM and should make 400-420 RWHP with matching heads, 30-36 lb injectors, 52-58 mm TB, 1 3/4 LT's, no cats, GOOD tuning, etc. The heads are ported and machined for larger Ferrea 2.00/1.56 valves, matching springs (Comp 987/977 springs and Ti retainers or Bee Hive springs and CM retainers depending on lifter type and EXACT cam specs), locks, locators, milling, cleaning and assembly. These will flow about 270/190 with a 205 cc intake port.
Heads and cam are $1650 (plus shipping) and will need GOOD tuning. This has the RPM range of the CC 306 cam but will make more HP and TQ at peak and across the board. The REAL difference will be the LE2 cam will make TQ in the 2500 RPM range and the cc 306 doesn't start until way past this.
-----------------------------------------------------------------------------------------------------
LE3 cam pulls from 2600 to 6800 RPM in a 350 (2300 to 6500 RPM in a 383) and should make 410 to 430 RWHP with matching heads, 36-42 lb injectors, 58 TB or mono blade, GOOD tuning, etc, etc, etc. These are the same heads as above. This type of RPM requires a lot more spring pressure and will also need Comp R lifters to handle the spring pressure.
Heads and cam are $1650 (plus shipping) and will need GOOD tuning. This cam is similar to the GM 847 cam but makes about 10 more HP at peak and starts making HP sooner. Makes more HP and TQ across the board. Needs gear and converter to work well in a 350. Pretty much a racing cam for the 350 or a good street cam that will act like the LE2 in a 383.
-----------------------------------------------------------------------------------------------------
Everyone has a different opinion about what is streetable and what a safe RPM limit is for their engine.
If you are looking for just cylinder heads and with out a cam, the heads are priced at . . . . .
$750 for the LE1 heads only
$1300 for the LE2 heads only
$1300 for the LE3 heads only
Give me a call and I can help you pick a combo that you will be happy with.
Lloyds website is
www.eportworks.com
Lloyd Elliott-------------------------------972-617-5671----------------------------Red Oak Tx 75154
NightTrain66@msn.com