will it survive 28 psi?

[SappySE107]

So when are you going to the dyno?

[project89]

ugh tuning this thing is a bitch.
im using 2 injectors per cyl, with the megasquirt
each set of injectors have there own fuel maps

problem im having is on the transition on bringing the second set of injectors in i get a huge rich spike

im bringing in the second set of injectors at 9-10 psi

i dont think its going to work as planned though and im prolly gonna have to drop back to a single injector per cyl

[project89]

I sold a 3500 top end to the buyer of that motor and it's going on it, I'll have to ask what kind of shape it was in

Grape had no porting on his 13.4, Tiago spent $900 on pro-ported heads and they still flowed less than small port 3100's.

Too bad you won't indulge any more info on those CNC'd heads. Who digitized them?

theres pictures of it posted on ftv6 ull have to do some digging as the posts are way old.
grape stated in another thread that the bowls and casting flaws were cleaned up in those heads,unless he was talking about a diff set of heads since those runs were from years ago.

i did most of the work with input from my uncle and a friend of the shop from manley.

hours were spent between hand porting and having the head in and out of the bridgeport(luckily we finally had goten a digital/programable machine made the repetitious parts alot easier lol).and then the guy from manley did the stuff to setup for and the cncing

when we did this there were 2 sets done. one program requires no welding or mods like that to the heads.

the second set is what im running and i dont belive the few changes we made have any decent affect on the heads due to the valve sizes, but due to bore size we couldnt swap in anything larger then whats there now

[ForcedFirebird]

I sold a 3500 top end to the buyer of that motor and it's going on it, I'll have to ask what kind of shape it was in

Grape had no porting on his 13.4, Tiago spent $900 on pro-ported heads and they still flowed less than small port 3100's.

Too bad you won't indulge any more info on those CNC'd heads. Who digitized them?

[project89]

yeah
tiago went into the 12's on high boost with his,but i belive he ended up wounding the motor.somone had bought his shortblock and the cyls walls were bad

[ForcedFirebird]

Are you talking about username "Grape of Wrath"'s purple Camaro?

Tiago was in the 12's with a 3.4 and ported iron heads.

[project89]

i stand corrected on the turbo it apears at that time he was running a t3/t4 46 trim
id have to look at the various maps but he said the turbo maxed at 44#'s min. the turbine side was a t3 .82 with a .60 on the cold side

heres the map for it


he does have a cam but i couldnt find the specs alls i could find is that it came from delta,so im going to assume its atleast a 260 on a 114 lsa

[project89]

I'm more interested with the track setup on the vehicle, the cam, and the turbo used.

ill dig up the info for ya and post the links. im pretty sure its a 57 or 60 trim, real garrett turbo.converter i know is a 3k stall.the cam im unsure ill have to look

[SappySE107]

I'm more interested with the track setup on the vehicle, the cam, and the turbo used.

[project89]

yeah lemme go grab them, theres 2 links in the one thread he said stock heads, then in another he said they were cleaned up and mildy ported

[SappySE107]

Got a link?

[project89]

his 13.4 run was on 15 psi just checked the other forums

[project89]

dont know,soon as i got the heads back completed i put them on the motor

im very happy with them,put it this way

9 psi landed me a 13.0 with the 3.1 lil more tuning would have gone into the 12's
my old motor took 18 psi to break 12's with ported heads

3.4 on another board with cleaned up/ported heads custom intake pretty much the same converter i run went 13.4 @ 15 or 18 psi (i cant recall the exact number but its deff inbetween 15-18 )

[34blazer]

CNC'd irons? what kind of flow numbers did you get with those?

[no_doz]

i too am monitoring this thread very eagerly-id love to know the capabilities of that cnc ported iron head.