Is this true?

82 GT · 03-25-2005, 03:50 PM

I read online that you're supposed to advance your timing until you reach max. vacuum on the gauge and then back the timing down until the vacuum is 1" less
Is this true? I'm trying to get the setup I have dialed in correctly to get a better baseline and then start swapping the parts it needs to hit the 12's

Gs835.8Stang · 03-25-2005, 06:00 PM

I have never heard of that method of setting your timing. I have heard of using a vaccum guage to set up the carb, but not timing.

andy669 · 03-25-2005, 06:54 PM

Peckerwood has always been a big advocate of that. I personally have never used it. I have always been fortunate enough to have access to an engine or chassis dyno to figure out what works.

Andy

fiveohpatrol · 03-26-2005, 05:43 PM

that setup you have should be able to hit 12's even with your timing way out of whack

regardless, set the base at about 10-12deg btdc as a baseline and go up from there

82 GT · 03-26-2005, 06:19 PM

well, I found a few things out about my setup that I didn't know.
First, the performer intakes are not much, if any, better than stock.
Second, Mallory dizzys have slow advance rates set at the factory.
With that said, I'm swapping to a stealth intake with a 750 holley and recurve my dizzy for quicker advance curve.
Then..I should be in the 12's....or so I'm being told.

Stay tuned because if not, you might see a black, 1982 GT with a worked 351w for sale in the classifieds!!(with a fist hole through the windshield)

tireburner163 · 03-27-2005, 11:48 PM

I'd go with a Vic Jr intake over a Stealth. Just my opinion

Dark_5.0 · 03-28-2005, 08:31 AM

My dad has a stealth on his 383 stroker. Seems to work really well for him.

tmoss · 03-28-2005, 01:15 PM

I'd much rather tune the torque/power curve on a dyno also.

82 GT · 03-28-2005, 03:28 PM

Quote:

Originally Posted by tireburner163

I'd go with a Vic Jr intake over a Stealth. Just my opinion

I drive this on the street so the stealth makes it more streetable than a victor. If this was a drag car only, then I would go with the victor.

Brian

82 GT · 03-28-2005, 03:29 PM

Quote:

Originally Posted by tmoss

I'd much rather tune the torque/power curve on a dyno also.

So would I but there are no dynos around this area.

tmoss · 03-28-2005, 04:58 PM

Know anyone with a G-Tech?

03-25-2005, 03:50 PM	#1
82 GT Import Slayer Join Date: May 1999 Posts: 2,241	Is this true? I read online that you're supposed to advance your timing until you reach max. vacuum on the gauge and then back the timing down until the vacuum is 1" less Is this true? I'm trying to get the setup I have dialed in correctly to get a better baseline and then start swapping the parts it needs to hit the 12's __________________ '82 GT 351W (.060)Comp Cams 274* Extreme Energy cam, ported & polished heads w/ 1.94/1.60 valves 10.3:1 flat top pistons,stealth intake, Mallory dizzy,Holley 750dp carb, BBK shorties,Flowmaster exhaust,C-4 with 3700 stall converter, B&M pro shifter,8.8 rear, 4:10's, subframes, electric fan, powermaster alternator, 4 core radiator.

03-25-2005, 06:00 PM	#2
Gs835.8Stang Registered Member Join Date: Feb 2005 Posts: 13	Re: Is this true? I have never heard of that method of setting your timing. I have heard of using a vaccum guage to set up the carb, but not timing.

03-25-2005, 06:54 PM	#3
andy669 Registered Member Join Date: Jan 2001 Location: Moline Il Posts: 901	Re: Is this true? Peckerwood has always been a big advocate of that. I personally have never used it. I have always been fortunate enough to have access to an engine or chassis dyno to figure out what works. Andy __________________ 88 coupe 91 LX NMRA Pure Street 5120

03-26-2005, 05:43 PM	#4
fiveohpatrol I'd rather be basketweaving Join Date: Feb 2000 Location: Indianapolis Posts: 2,551	Re: Is this true? that setup you have should be able to hit 12's even with your timing way out of whack regardless, set the base at about 10-12deg btdc as a baseline and go up from there __________________ NMRA O/C 9516 NA pumpgas stickshift 347 10.65@125.6, 6.73@100, 1.41 60ft

03-26-2005, 06:19 PM	#5
82 GT Import Slayer Join Date: May 1999 Posts: 2,241	Re: Is this true? well, I found a few things out about my setup that I didn't know. First, the performer intakes are not much, if any, better than stock. Second, Mallory dizzys have slow advance rates set at the factory. With that said, I'm swapping to a stealth intake with a 750 holley and recurve my dizzy for quicker advance curve. Then..I should be in the 12's....or so I'm being told. Stay tuned because if not, you might see a black, 1982 GT with a worked 351w for sale in the classifieds!!(with a fist hole through the windshield) __________________ '82 GT 351W (.060)Comp Cams 274* Extreme Energy cam, ported & polished heads w/ 1.94/1.60 valves 10.3:1 flat top pistons,stealth intake, Mallory dizzy,Holley 750dp carb, BBK shorties,Flowmaster exhaust,C-4 with 3700 stall converter, B&M pro shifter,8.8 rear, 4:10's, subframes, electric fan, powermaster alternator, 4 core radiator.

03-27-2005, 11:48 PM	#6
tireburner163 It's a lot like a race car Join Date: Aug 2000 Location: Meridian, MS Posts: 4,130	Re: Is this true? I'd go with a Vic Jr intake over a Stealth. Just my opinion __________________ 1987 Buick T-type 1998 HD Electra Elide

03-28-2005, 08:31 AM	#7
Dark_5.0 Registered Member Join Date: Apr 2001 Location: Staging lane Posts: 4,337	Re: Is this true? My dad has a stealth on his 383 stroker. Seems to work really well for him. __________________ 92' LX-Big brakes, Lots and lots of suspension, GT40X heads, Ported cobra intake, stock cam, Vortech SC trim. 00' Lightning-Stock 88'CRX-13 second ego killer

03-28-2005, 01:15 PM	#8
tmoss Registered Member Join Date: Mar 2003 Location: Saint Louis, MO Posts: 634	Re: Is this true? I'd much rather tune the torque/power curve on a dyno also. __________________ Tom (Torque) Moss 88Gt 5spd Vert, FLowmaster Catbacks, stock cam advanced 4° @ 108.5° ICL, NMRA prepped GT40P heads 1.85/1.55 valves and 1.7 rockers, MAC P headers Jet-Hot coated, 97 Exlporer intake (ported lower), TB and injectors. 277RWHP/330RWTQ (SAE). http://www.fastlanecars.com/

03-28-2005, 04:58 PM	#11
tmoss Registered Member Join Date: Mar 2003 Location: Saint Louis, MO Posts: 634	Re: Is this true? Know anyone with a G-Tech? __________________ Tom (Torque) Moss 88Gt 5spd Vert, FLowmaster Catbacks, stock cam advanced 4° @ 108.5° ICL, NMRA prepped GT40P heads 1.85/1.55 valves and 1.7 rockers, MAC P headers Jet-Hot coated, 97 Exlporer intake (ported lower), TB and injectors. 277RWHP/330RWTQ (SAE). http://www.fastlanecars.com/

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