85Firebird350

iTrader: (3)

Finally got my motor back together and finished, race season is comming up soon. Just curious what you guys think my ET's will be.

*406sbc
*Stock crank and rods(upgraded bolts)
*Dished pistons 10.5:1 compression
*Custom grind retrofit Hyd. roller cam .585/.599 lift 238*/248* duration @.050 113LSA
*World sportsman II's, fully ported and polished, Angle milled to 62cc Chambers, 5 angle valve job, 2.02/1.6 Manley stainless steel valves, Comp cams 1.550 springs good for .700 lift, 10* locks and retainers, 7/16" ARP rocker studs and Comp cams guide plates.
*Vic Jr. #2975 manifold
*Holley HP series 750cfm carb
*Hooker 2210's,custom y-pipe and SLP loudmouth exhaust
*Th700r4 with 3200 stall converter
*Aluminum 4th gen driveshaft
*10bolt rear with 3.73's and a eaton unit (for now)
*Mickey Thompson ET streets DR's

I have flow numbers for the heads if you guys need them, Just curious to see what to expect out of this car. I know I probably shoulda gone better with the heads.

Thanks Guys!

xpndbl3

iTrader: (5)

12.0s until the trans or 10 bolt give up the ghost.

85Firebird350

iTrader: (3)

That same topend put down 525rwhp on my buddies 383 stroker, I know I wont put down that kind of number but with close to 500rwhp you think just 12's? Is it due to the rearend and tranny? Lack of stall? I have a 9" I'm building but it wont be ready anytime soon.

I also have a Jegster TQ arm
UMI sfc's
Lakewood LCA's and relocation brackets.

mw66nova

iTrader: (13)

why so lazy on the camshaft? that wide lsa looks like it'll love some spray, but for an n/a motor, i'd have gone to a 108-110lsa. i think it'll want more converter and more gear down the road to perform to it's best ability but i think i see that you are trying to build a dual purpose street/strip weekend warrior with good street manners. those cylinder heads leave alot to be desired too but go ahead an post up those flow numbers to give us real perspective.

xpndbl3

iTrader: (5)

prove me wrong then by taking it to the track

These threads are soo pointless, guys like me and mw66nova got low 13s, even 12s out of stock headed 305s....and 99% of the board is in the mid to upper 14s with them. It's all in that magical tune and suspension setup.

85Firebird350

iTrader: (3)

I dont liek these threads really but the track isnt open for another month here and I was just curious. The cam is actually going to love the spray, I plan on a 150 shot. The heads flow pretty well...
LIFT VALUE
INTAKE FLOW CFM
EXHAUST FLOW CFM

0.100
68
53

0.200
144
106

0.300
206
144

0.400
242
173

0.500
258
201

0.600
273
213

I dont plan on doing anyhting else to the motor just fine tuning the suspension and driving the hell out of the car. I was hoping to hit a 10.xx on the spray. I didnt invest much in the tranny or 10 bolt, I have a 9" I'm building with a full spool and 4.30 gears along with a 4200 stalled TH400. Just need some more time and money to finish everything.

ross

For such a small shot of nitrous you do not need a wide lobe sep. use a cam with a 106-110 will work better on motor. Good luck I think you have a combo for high 11s to low 12s

85Firebird350

iTrader: (3)

How much do you think the 9" and the 4.30's will help?

xpndbl3

iTrader: (5)

gearing will help, and not to mention you can floor it out of the hole, but 4.30s is kinda steep unless you want taller tires on the back. Do an rpm calculator.

BNBZ28

iTrader: (1)

at 501rwhp i ran 10.8@126 and thats with a 700r 4000stall and a 12 bolt. i had been 11.6@119 on a 10 bolt with a smaller kit.

joeblue83

iTrader: (8)

2.02/1.60 is way to small for your combo, you should go a little bigger on the intake, 2.08's would be much better

85Firebird350

iTrader: (3)

I thought so, to be honest but I am stepping up to either AFR 210's or 227's next year along with a bigger nitrous shot.