24's or 30's?

Mr.Slave · 05-13-2008, 08:08 PM

I want to get a little more input on if I need 30's or not. Right now I have 24's, but as I get closer to completion, I think I might need 30's. Heres what I have: 306 with roughly 10.1 to 1. Twisted wedge heads, custom grind .553 int .525 exh (I forget exact duration @.050 and I don't have the sheet in front of me but I think it was 224 int and 228 exh) GT-40 intake with lower port matched to my heads, 1.6 rockers, CAI, 70mm TB, soon to be Pmas MAF, 255lph pump, Adj fuel reg, and I do have a plate kit I'll be spraying roughly a 150 shot, but its a wet kit.

Just want to see what you guys think before I get the MAF.

banditmwp · 05-13-2008, 08:19 PM

If I had it to do again, I would do 24's with my setup.....

actually I wouldn't since the 30's were free

QWKSNKE · 05-13-2008, 08:23 PM

24's should be fine

Italian LX · 05-13-2008, 08:38 PM

Quote:

Originally Posted by QWKSNKE

24's should be fine

+1

30's are overkill on any N/A 306 and they kill your idle quality.

banditmwp · 05-13-2008, 08:39 PM

Quote:

Originally Posted by Italian LX

...they kill your idle quality.

I disagree. No idle problems here.

04 Mach1 · 05-13-2008, 08:46 PM

24's are plenty for a 306.

Matt your just lucky or your tuner is the shit. The 331 had serious problems hunting for an idle.

banditmwp · 05-13-2008, 08:48 PM

Quote:

Originally Posted by 04 Mach1

Matt your just lucky or your tuner is the shit. The 331 had serious problems hunting for an idle.

now that you mention it, it did idle a little better after I replaced the distributor and reset the base timing.

still running that wideband tune cause i'm broke.

Italian LX · 05-13-2008, 08:49 PM

Quote:

Originally Posted by banditmwp

I disagree. No idle problems here.

Typically, it will run a bit rich because the pulse widths can't go small enough with these low impedance injectors. It may be idling smoothly, but it likely is running richer than it should.

banditmwp · 05-13-2008, 08:51 PM

That I will agree with. I will likely buy some 24's and a tunable MAF when I get a tweecer.

Mr.Slave · 05-13-2008, 08:54 PM

In that case, I'll keep the 24's for sure. They've been sitting dry for over a year now and I got them used to begin with, any reccommendations of a good place to send them for a rebuild?

05-13-2008, 08:08 PM	#1
Mr.Slave Member Join Date: Apr 2007 Location: Lockport N.Y. Posts: 37	24's or 30's? I want to get a little more input on if I need 30's or not. Right now I have 24's, but as I get closer to completion, I think I might need 30's. Heres what I have: 306 with roughly 10.1 to 1. Twisted wedge heads, custom grind .553 int .525 exh (I forget exact duration @.050 and I don't have the sheet in front of me but I think it was 224 int and 228 exh) GT-40 intake with lower port matched to my heads, 1.6 rockers, CAI, 70mm TB, soon to be Pmas MAF, 255lph pump, Adj fuel reg, and I do have a plate kit I'll be spraying roughly a 150 shot, but its a wet kit. Just want to see what you guys think before I get the MAF. __________________ 306 stock block, balanced forged internals, main girdle, cam motion custom grind, Twisted Wedge heads, GT-40 intake with port matched lower, 24# injectors, Big Shot plate kit, equal length shortys, o/r x-pipe, CAI, electric fan, A/C and smog delete, all the supporting mods.

05-13-2008, 08:19 PM	#2
banditmwp Welcome to America! Join Date: Dec 2004 Location: in the 11's Posts: 4,501	If I had it to do again, I would do 24's with my setup..... actually I wouldn't since the 30's were free __________________ 91 GT Convertible 2006 Nissan Titan LE Crew Cab 2014 Peterbilt 337/Marion 22' box

05-13-2008, 08:23 PM	#3
QWKSNKE 3v's are slow Join Date: Dec 2004 Location: Here and There Posts: 17,152	24's should be fine __________________ 2009 Porsche Carrera S 2008 ///AMG C63.. Eurocharge Tune. RIP 2019 AMG GLC43..wife's 03 F250 SD.. Edge Evo, AFE Stage 1 CAI 08 GT. JBA axle back, FRPP springs, FRPP swaybars.. daughter's 01 Cobra vert... wife's I need a new toy

05-13-2008, 08:46 PM	#6
04 Mach1 Bet I red light B4U Join Date: Aug 2005 Location: ANNISTON, AL Posts: 975	24's are plenty for a 306. Matt your just lucky or your tuner is the shit. The 331 had serious problems hunting for an idle. __________________ 89 gt 2.3 stroked holley head with n12n port high flow intake with great big fart can skunk 2 seat belts with kool glow water squirters and new light up shift knob basically everything from wal-mart art carr C4 10.53@127.3 w/ 1.53 60' 89 gt vert 347 eldebrock heads and intake AOD w/3000 stall unknown with 5spd went 12.7 on steet tires 04 Mach1 automatic flowmaster K+N drop in 13.9

05-13-2008, 08:51 PM	#9
banditmwp Welcome to America! Join Date: Dec 2004 Location: in the 11's Posts: 4,501	That I will agree with. I will likely buy some 24's and a tunable MAF when I get a tweecer. __________________ 91 GT Convertible 2006 Nissan Titan LE Crew Cab 2014 Peterbilt 337/Marion 22' box

05-13-2008, 08:54 PM	#10
Mr.Slave Member Join Date: Apr 2007 Location: Lockport N.Y. Posts: 37	In that case, I'll keep the 24's for sure. They've been sitting dry for over a year now and I got them used to begin with, any reccommendations of a good place to send them for a rebuild? __________________ 306 stock block, balanced forged internals, main girdle, cam motion custom grind, Twisted Wedge heads, GT-40 intake with port matched lower, 24# injectors, Big Shot plate kit, equal length shortys, o/r x-pipe, CAI, electric fan, A/C and smog delete, all the supporting mods.