Chad Speier

iTrader: (1)

What casting do you have?

Here is a Dart chamber with same program.

project89

iTrader: (1)

proheader

Chad Speier

iTrader: (1)

The small port (227cc 2.055 valve) around $850 valve jobbed.

The big port (248cc 2.100 valve) around $1000 valve jobbed. I have to put a intake seat ring it them.

project89

iTrader: (1)

i may very well be yanking my heads off after next weekends race and sending them your way for the 227cc 2.055 deal

got those 227's on anything close to 355ci 10.25-1 cr ,fairly mild cam (xe274) hsr intake ? if so what kind of power they making n/a

rb85TA

Looking good there Chad

rb85TA

I'll be sending my Dart Pro1 head's to you for the 2.100 job..... Sometime after the 17th of this month.

FtrSpeedy

Wow heck of a deal, what kind of power gaines with the 227 porting could some expect over the out of box proheader heads?

Orr89RocZ

iTrader: (20)

The 227 he has is a serious head! Makes very good power in 355-383 motors. Even 400's. I thought he did one 383 that was over 600hp. Several 355's over 500 hp easily

rb85TA

I'm thinking the 248's will be the ticket on my 422cid 12.8:1, guess we will see

project89

iTrader: (1)

im buying another set of heads to send off to chad instead of pulling my current heads.

this motor is up and running now but race seaon is over so i cant get track numbers till atleast january , i will however have it out on the street soon after i fix the wiring error int he tailights

sorry about the vertical video

rb85TA

Sounds good Project 89.

project89

iTrader: (1)

thanks

rb85TA

Np, Chad has my pro1's. ... I told him that I didn't need them until February.
Still anxious to see how they come out

project89

iTrader: (1)

nice deff post up some pics

rb85TA

Definitely, but they'll be assembled when I get them back. I sent him the heads, valves, springs & retainers ( hopefully Chad won't be to mad about the part's I sent ).
Maybe we can get him to post some pictures of them bare as well.

Mrich0908

Project89,
Or any one who owns these heads. What are the proper size length of push rod that go with these heads?
Because the extra think deck it requires a different length push rod no?

Twin_Turbo

iTrader: (25)

The only way to get an accurate answer is to measure yourself so the rocker axis from trunion to tip (or roller tip centerline) is dead perpendicular to the valve stem at mid lift. No other way about it. DIOADIR

project89

iTrader: (1)

correct every setup will be different , u HAVE to measure them yourself

rb85TA

Bump

Mrich0908

Ok got it. Can you tell me what size you used so i have an idea of what im looking at buying?

rb85TA

I wouldn't use anything under a 3/8", most push rod guy's would recommend 1/2" tubes for a solid roller.
As far as length, the last set I ordered were 8.300" , but as mentioned above, it's different on every engine.

Mrich0908

Thank you allot , Im using a rollercam but I have purchased my cam yet.
So far I have Scat forged 4340 3.750 stroker crank with forged 4340 6in rods 30 over wiesco forged pistons GT45 turbocharger RPC200cc( dart platinum copys) heads and Assaults hurricane MPFI intake manifold.
The motor will live mostly below 4500 rpms will 3/8 push rods do you think?

rb85TA

With boost. ... I'd lean towards 7/16-1/2", call Manton or Trend. They will tell you what they believe will work best for your application

Orr89RocZ

iTrader: (20)

I guess it depends on your spring pressure and aggressiveness of the solid lobe but 3/8 typically does very well. Thats what i use to 7200 rpm and 30 psi lol but i am hyd roller with relatively mild springs 180/450 lb

rb85TA

Hey Orr, you still running the assault heads?

Orr89RocZ

iTrader: (20)

I never had these heads. I do have Speiers port program but these are RHS based 220 castings

rb85TA

Oh, was just curious about them. Got a budget build going on. Chad is hooking me up..... I sent him a new set of "old" pro1's to port & he's trading me up to the platinum series + full cnc 248cc runner program, valve job & stacking the springs. ... grand total, 2k

Orr89RocZ

iTrader: (20)

Not a bad deal. Sounds like similiar port to mine

rb85TA

I'd say probably right on point with that. Around 340-350 cfm.

rb85TA

1207 port match?
Going on my solid roller 422 ci sbc

Orr89RocZ

iTrader: (20)

Yup. Turn it 7500 and let it eat. Mine doesnt stop pulling. Higher i shift the quicker the et lol

rb85TA

Right on!
If you don't mind, what is your combo?
Just curious as to how similar yours & mine are...
Ya know ci, compression, cam, intake & carb ( just general info, don't have to be exact ). I'm shooting for 7500 rpm (or better), & 700-750 @ the crank + 250 shot of N2o....

Orr89RocZ

iTrader: (20)

4.125x3.75 9:1 comp. speier 2.72 sq in port 245 cc 330 cfm at .700. 340+ over .800"
Vic E single plane 1207 ported. Hyd roller 246/252 .640" 113

rb85TA

Nice!
I hope to be able to get mine together this year.

project89

iTrader: (1)

cars up and running so far ive been really happy with these heads , only been running a few pounds of boost till my 118 fuel gets here so i can dial in the tune but shes an animal and a half

lil lack of low end tq but that was expected to be with my combo with the large heads xe274 and hsr though it is a a bit hard to get a good feel for the heads down low with my 4,500-4,800 converter in the car

rb85TA

That sounds BADASS !
Can't wait to see her go, Congratulations bro.

project89

iTrader: (1)

thanks unfortunatly my racetrack closed down , so she is reserved for daily driver status for now , rmr in slat lake city is about a 400 mile tow for me , and las vegas is about 440-450 mile tow not sure how many times i can afford tow the car to either this year

the track i did have that somewhat close was about 200 mile round trip and cost me about 100$ in fuel for the haul , im hoping they find another location to open up that is closer to me or about the same distance away

rb85TA

DAMN! THAT SUCKS! ! ! !
You can't really blame them, because of idiots that go to the track, sign a waiver, crash & then sue the track anyways & the insurance! OMG!!!
And now everywhere, the cop's are cracking down on street racing!
That's why I'm not building a drag car!
I'm gearing towards open roadrace events, autoX& highway roll racing for top end

Dray

Man I don't think that will help me none ! I'm here trying to get the facts not opinions ! Is that all u had ? Can u give some evidently truth based facts about the product , bcuz I'm fixing to buy a pair . thanks bud

Orr89RocZ

iTrader: (20)

Your first post you decide to resurrect a dead 3 yr old thread...

Mrich0908

What would you like to know? ive had my set as cast not ported from 2015? still on the 383 running a s480 turbo. Im a machinist( non automotive) by trade . I went over my set on a surface plate . I dont have my engines build log in front of me but I do remember I was more than pleased with my castings. Are they better than a stock iron head yes are they as good or better than a set of AFRs not even close. All overseas heads arent made the same so do your home work.