slowlsx

iTrader: (28)

i realize i am over on ls1tech instead of pt.net but i knew more of you guys know about weight+power= ET's

i have a single cab silverado and here is the build

iron block 347
Diamond piston
Eagle Rods
10:1
228/222 115*
Bogarts
caltrac's 50/50 90/10
Built 60e
342's
60s twin walbro's
kb racing T6 s465 1.10 A/R
circle D 3200

i will be adding either a set of ETP'S or TFS 220's and Edelbrock Pro flo

my ultimate goal is 10.20's. will i need the heads and pro flo to meet my goal? what do you think is realistic without the heads/intake and with the heads/intake and boost level for both. im guessing raceweight is maybe 4400?

XtremeDime

iTrader: (16)

Nope. There are guys in the 9s(if not 8s) with 317s and an ls6 manifold

Being that you have a truck, your 60' will be the hardest part of getting the ET youre lookin for.

dudeman

iTrader: (43)

how many 9 sec trucks run 317 heads?

XtremeDime

iTrader: (16)

Plenty of people are getting well over 700whp using 317s and ls6 intake. Even a RCSB can get a low 10 with that much power.

slowlsx

iTrader: (28)

so with that being said... i should be able to go 9's with the addition of heads and some type of intake?

as far as 60' goes, i have been low 1.6's on a 5.3 with nitrous and that was before the caltracs and all 4 shocks. the turbo should spool nicely with the 347

slowlsx

iTrader: (28)

i only know of one which is a 370 4x4 single cab and it has self ported 317's

but if it only take 700whp to run low 10's in a truck then its possibly cause i have seen PLENTY of 700+ 347-370 motors make that kind of power with a stock head.

HydroStream6

iTrader: (16)

What's the fuel system? You can make enough power but I don't see any kind of 4l60e lasting very long at all with that kinda power and 4400lbs.

Pro Stock John

iTrader: (34)

I went 145 with ported 317's at 3500 raceweight, and Harlan I think went 166 with a set of ported 317's or 243's (I think)...

The thicker deck surface of some of the aftermarket heads out there will help with clamping.

I think you run low 10's with the right parts. I went 10.0@140 on 16 psi with my old tired 348cid and 8:1, but I was 3400 raceweight.

slowlsx

iTrader: (28)

two walbro's and 60lb injectors rated at 43.5psi so they are somewere around 70lbers.

i dont plant to keep the 4l60 so when it blows i will move to an 80e

slowlsx

iTrader: (28)

that gives me inspiration. i have a set of both 317's 72cc and 243's 66cc. so it would be 10:1 with the 243s and somewere around 9:1 with the 317's. i think the 243's will help me with 60' since this is a 4400+/- truck.

now another question i always had would be, if you run stock heads would it be best to put arp head bolts or head studs? the way i see it is if you put head stud's on some heads they are going to crack if you reach the boost level and be useless after, and if you just put head bolts they will just lift and you would need another gasket. can someone explain that one to me,

HydroStream6

iTrader: (16)

So it sounds like you and I are in the same boat pretty much. My car is about 4100lbs plus me (280lbs). I have a forged 370 with twin walbros and 60s. Stock 317 heads, CR is about 9:1. My best pass to date is a 10.45@134... getting back to the track as soon as the weather clears though to best that! Oh ya I'm on a 4l80e.

HydroStream6

iTrader: (16)

Use studs. Much better clamping power as more of force gets used for actual clamping rather than in the torsion of a bolt.

slowlsx

iTrader: (28)

do you know how much power you are making with the amount of boost you are running for that pass? how are your fuel pumps and injectors doing? i think ill be running a set of ported 317's and the Edelbrock pro flow. the heads will wait till the end. 2500 is alot to spend on some heads.

HydroStream6

iTrader: (16)

Don't really know how much power she's making. To run that mph at my weight id have to be making 750-800 at the flywheel.

HydroStream6

iTrader: (16)

I'm running meth as well but my idc is only like 70%. 62 psi base pressure.

Pro Stock John

iTrader: (34)

head studs

slowlsx

iTrader: (28)

check!

in the process of buying some rings and main/rod bearings.

can someone tell me the difference between these main bearings and what i should purchase.

clevite H but two different prices? http://www.byunspeed.com/product_inf...oducts_id=6406 and http://www.byunspeed.com/product_inf...ducts_id=15813

then theres the P series http://www.byunspeed.com/product_inf...ducts_id=11762

and as far as rings what do you guys think? looking at these two

http://www.byunspeed.com/product_inf...oducts_id=5864

http://www.byunspeed.com/product_inf...oducts_id=6999

slowlsx

iTrader: (28)

any additional help?