silverbeast

iTrader: (16)

Hey guys, I am looking for the best 15 degree head on the market for my 423 ci motor. I am wanting to run a 275 drag radial class and they have limited the LSX cars to stock valve angle. So that makes my 235 TFS heads illegal. Im thinking about a set of AFR's but what do you guys think? Thanks

mathia

iTrader: (2)

Form sponsor West Coast Cylinder Heads CNC's raw Edelbrock castings.

http://www.proheads.com/WCCH245.html

NemeSS

iTrader: (127)

MANY proven heads available.
guess boils down to how much willing to invest

silverbeast

iTrader: (16)

are they a 15 degree head? Also they havent made an intake to fit these yet.

elias_799

iTrader: (8)

http://araoengineering.com/LSX.htm

i would love to grab a set of these

Tom@SpeedInc

iTrader: (5)

AFR, Dart, All pro

I'd like to see some numbers from AFR 245 heads, promising.

If you source Dart CNC'd heads hey run a 250cc program on them.
TEA CNC's Dart heads, they were in FSC magazine last month.

are you limited to cathedral port?

toby

iTrader: (1)

i think the l92's are 15 degree.

SOMbitch

iTrader: (8)

I didn't know Dennis was doing this. Haven't been on HCLS1 lately....That is killer... What cc is the intake runner???

KILLER-LS1

iTrader: (18)

probably the best heads you can buy. and yes, stock valve angle and there are many intakes available.

give richard over there a call. he does all the top racers' heads

silverbeast

iTrader: (16)

Thanks guys. As far as the rules go all it says is im limited to a 15 degree head, and thats why im posting here. I know this is my best bet on finding the best heads. :-)

vettenuts

iTrader: (4)

AFR is getting ready to release a new series of heads, not sure if you had seen this. Might shoot a PM to Tony Mamo as well and get status/performance information.

Ed Curtis

What is the intake manifold rule? VERY important component to the combination.

The big runner LS3 heads PI has might be a great choice if you are limited to a long runner intake manifold. Amazingly quiet at high lift.

silverbeast

iTrader: (16)

Hey Ed, the only rule about the intake is it has to be a 4150 flange with matching carb or TB. EFI is ok.

teke184

iTrader: (5)

mamo worked AFR 225s??

his touched up 205s do amazing things...why not try it on the bigger heads?

Ed Curtis

Sounds like a fun deal... I'd like to ask more questions but it might be something best for another forum. I've got some ideas that may shake up the troops in the Tech Department....

studderin

iTrader: (28)

more info on that class.

DSRE

iTrader: (7)

The AFR 245's are 355cfm intake and like 260 on the ex, KILLER Cathedral Port Head!

silverbeast

iTrader: (16)

Hey Ed, shoot me a pm. I'ld love to hear some new ideas. ;-)

silverbeast

iTrader: (16)

Studderin, the class is a spin off from another 275 drag radial class that has gotten very expensive to compete in. The fastest cars are running 5.0's to 5.20's. This one was made for the working man,lol. Here is a run down on the rules as they are right now.

275 Real Street

Body & Glass

- Must have working headlights and tail lights
- Stock appearing interior, single seat, carpet, door panels, factory "type" dash
- Lexan permitted (tech will have descretion to not allow "yellowed" or poorly mounted lexan on race day)
- Windows must be operational
- No wheelie bars

Suspension

-stock type suspension factory frame rail
-ladder bar with factory frame rail add 50 lbs
-Coil overs and anti roll okay

Tires

-Maximum rear tire size allowed is 275/60-15 designation

-Tire must be used as intended from manufacturer. No alterations permitted.

Power Adders

-Single type power adder only

Exhaust

-Must have mufflers

Weights-

Small block N/A – 2750 lbs

Small block nitrous .082 jet max– 3150 lbs

Small block turbo 76 mm T4 & D1 or = supercharger - 3300

Big block N/A – 3050 lbs

Big block nitrous .065 jet max – 3450 lbs

Cylinder Head/Induction-

Single stage plate only no multi stages # 4 nitrous line

4150 carb only

23* Chevy - 20* Ford - 18* Mopar - *15 LS

Conventional Iron BB heads only

SB Limited to 427 cu in

BB limited to stock deck height 525 cu in

Buick, Pontiac and Oldsmobile engine combinations run at small block weight

Electronics-

Ignition boxes limited to standard type ignition controls (No Slew or Traction or Boost Controllers)

Digiset or time delay for nitrous control only

EFI okay

We will make an adjustment with weight, tire, jet restriction etc in the future.

silverbeast

iTrader: (16)

This is the head im really leaning towards.