Carbureted LSX forum - Got EPS Cam specs today for my build

Got the specs in today for my build. Lift 602/615 Dur 234/246 Lsa 110 with 2* advanced ground in the intake. What do you think? Got the flow chart for my ported procomp l92s .600 lift is 364 cfm, with a custom 810 holly I should at least be in the mid 400s to the ground? I would hope...

Flow chart. Thought y'all might like to see.

My brother put down 415 to the wheel with a smaller cam than youra and long tubes and stock heads. Id say closer to 500 for sure.

well you would think so. But I have seen so many numbers all over the place. So I really don't know what to expect. I did get the 64cc chamber casting heads so I should probably be around 11-1 compression. I know what will help.

460-490 depending on parasitic loss.

Yeah thats what I'm hoping for. Just got a bunch more parts in today, headers, motor mounts. east wood 175 mig, and paint gun and other odds and ends. I'm looking for a good Place to order a harwood 2.5 inch cowl. I can't wait to get back and start this build. I think car is going to turn out really nice. The car is factory black, so im just going to repaint it black with an ss spoiler and harwood hood and put put some type of dark charcoal grey stripes down he car. I think it will look really good. But we shall see. I'm gonna start a build thread when I start on it.

The funny thing is I started with saying "oh Ill just do lq9 with stock l92s" and some how that led into new hood, spoiler, paint, ported heads, custom cam and carb, and cant forget the tools... "you have to have tools" lol. it gave me a reason to buy the welder and new 60 gal a/c. Its a good thing my girl does not look at our bank statements. haha.... she would have an aneurysm.

this is how I want it to look, but black with dark silver or grey stripes.

http://www.camaroz28.com/forums/appearance-34/got-my-2-5-harwood-hood-745865/page4/

Its a good thing my girl does not look at our bank statements. haha.... she would have an aneurysm.

HA! Let's hope that doesn't change.

Haha I think I got that one in a million catch. She's been totally un questioning with all the boxes and boxes of parts showing up at the house. Course it could be the new double D doctor visit I paid for a number of weeks back?? lol. So when you think about it I win twice! I get to play in the garage and in the bedroom...

Stevecritt its funny how a project snowballs.I started off just wanting a ls in my car then I wanted more power before I ever put it in car.:devil: Then it has just snowballed until I to keep saving money to buy small things and its still not in car. I should have just got mine in car first then upgraded.

If you believe that flow chart you posted, I have some swamp land in a desert I want to sell you.

Stevecritt its funny how a project snowballs.I started off just wanting a ls in my car then I wanted more power before I ever put it in car.:devil: Then it has just snowballed until I to keep saving money to buy small things and its still not in car. I should have just got mine in car first then upgraded.

haha yeah, its a vicious cycle... :cheers:

Bullet, I'm really in the market for some ocean front property in Arizona... Know any good agents?

Bullet, I'm really in the market for some ocean front property in Arizona... Know any good agents?

Don't know why you would want to move out there. The market is inflated just as much as the flow numbers on that chart.

Not that flow numbers mean anything but c'mon. Why would you put those kind of flow numbers out there that are out of the park compared to better heads out there.

Here is Mast motorsports Black label 11 degree heads.

• Designed for any new Gen IV 6.0L or 6.2L engine
• Including LS3, L99, L92, L76, LY6, LSA, and LS9
• Available as packages for LS3 Camaro, Corvette, L99 Camaro, & L76 Pontiac G8
• Accepts Gen IV LS3 valvetrain, valves, & intake manifolds
• Uses a 2.165" intake valve and 1.600" exhaust valve
• Has a 256cc intake port
• Has a 69cc combustion chamber standard

Each Mast Black Label cylinder head assembly includes:

• A fully CNC machined Mast Black Label aluminum cylinder head
• Mast micro finished .650 lift beehive valve springs
• Mast lightweight stainless steel intake & exhaust valves
• Mast lightweight steel retainers
• Mast machined locks
• • NOTE: Gaskets, valve covers, rocker arms and pushrods not included

Flow Data w/4.000" Bore Plate
Lift Intake Exhaust
0.100 74 61
0.200 146 119
0.300 222 188
0.400 282 219
0.500 330 236
0.600 360 251
0.700 372 260



Here is PRC 13 degree offering


Lift
Intake Flow
Exhaust Flow

.200"
154 cfm
117 cfm

.300"
221 cfm
170 cfm

.400"
281 cfm
205 cfm

.500"
325 cfm
225 cfm

.600"
354 cfm
235 cfm

.650" 358 cfm 240 cfm
.700" 361 cfm 243 cfm


Now these are your heads off Pro Comp website.

Aluminum Cylinder Heads

LS3 Fully CNC Ported Heads

Aluminum Cylinder Heads Feature:

Hardened Seats
Bronze Valve Guides
High Grade Aluminum
Multi-Angle Seat Design
Available Complete or Bare
Available fully CNC Machined
Designed Performance Valve Springs
Advanced Port Design for Greater Flow
All Heads Priced Individually



Flow Numbers
Intake Exhaust

.100 72.0 59.3
.200 156.9 127.9
.300 232.1 177.1
.400 286.2 221.0
.500 324.8 248.0
.600 350.9 260.0
.700 375.6 269.1
.800 382.3 274.3



They contradict the PDF you put up. I just want Pro Comp or whoever flowed those heads to tell me how you get 5.9cfm of flow at .000 lift.
Plus, the better heads with a better valve angle which gives a better shot at the valve, flow less than the heads from Pro Comp which have a stock valve angle.

All I'm saying is just don't be disappointed if the motor doesn't perform up to your expectations. Alot of things have been sketchy over the years with Pro Comp. Their SBC offerings weren't that great and suffered from porosity. I wish you the best of luck with your combo but Pro Comp hasn't been known to be the best on quality.

Ported ls3 heads with 2.18 valves? Whats so inflated about it?

No ported LS3 head flows that much. One guy here had a set that flowed that much but he had epoxy all thru that head.


Here is the Hot Rod Mag article where all the rect port heads were flowed. The pro comps were done twice. The Dr. J's version and the Pro Comp ones. They come no where near the numbers on that sheet the OP posted and whats on Pro Comp website.

http://www.hotrod.com/techarticles/engine/hrdp_1102_ls3_l92_rectangle_port_cylinder_heads_te st/viewall.html

lol well why don't you call procomp and let them know of their discrepancies?

lol well why don't you call procomp and let them know of their discrepancies?

Already did. Me and a bunch of others. The guy never came back and posted and his flow chart was shady also. We called him out on it. Why is it that every flow chart from Pro Comp is shady? I just looked at Pro Comp site and when you look at pictures of the LS3 head its showing you a picture of a cathedral port head, what's up with that?:confused:

Here is the thread.

http://ls1tech.com/forums/generation-iv-internal-engine/1389216-airwolf-ls7-heads.html

I opted to buy the ls swap oil pan they offer . Its an aluminum fabricated job. The base flange was too wide at the starter preventing it from being bolted on. The pick up tube was not even coming close to mating to the oil pump and bolting up . And the remote
oil filter fittings leaked , slightly offset compared to the block/gasket and not fully welded.
Its not the first product i purchased from them that was shit. I just wont spend my money with them anymore.
Wouldnt be the first time someone printed incorrect info to sell a product.

http://www.hotrod.com/techarticles/engine/hrdp_1102_ls3_l92_rectangle_port_cylinder_heads_te st/viewall.html

The flow numbers may not match what the OP listed, but their flow numbers in that article are still damn impressive.

The flow numbers may not match what the OP listed, but their flow numbers in that article are still damn impressive.

Yeah, but the Hp numbers were the same or less than heads that costed alot less. The Hp numbers or the flow are only partly in question, its the durability that is question the most.

well, guess we shall know in a few weeks.