Ignition timing

[sixtyninemercury]

What are you guys running as far as ignition timing on your strip cars? At what RPM does all of your timing come in at? How did you come to that number?

[sixtyninemercury]

ttt

[sixtyninemercury]

Ya know what - maybe since most of you guys are running NOS, turbos and superchargers this is a stupid question on my part since my car is NA. Oops - :banghead:

[sixtyninemercury]

Hey, that's right - there are a couple of you guys who run NA. I remember now from the Open Headers thread. You were saying how fast your NA cars are running full exhaust. So how about some info on where your ignition timing is set at? :-)

[sixtyninemercury]

ttt

[Turbo331]

Ya know what - maybe since most of you guys are running NOS, turbos and superchargers this is a stupid question on my part since my car is NA. Oops - :banghead:

No reason to get upset:-)

How about some more info on your combo and see what some suggestions might be...we don't give bad advise and blow smoke up your you know what around here, like most other sites..... but we need the info to steer you in the right direction

[rel3rd]

Hey, that's right - there are a couple of you guys who run NA. I remember now from the Open Headers thread. You were saying how fast your NA cars are running full exhaust. So how about some info on where your ignition timing is set at? :-)

My timing setting's kinda a moot point since it's 31 years newer, a Chevrolet, and the technology has changed a little as far as timing control.

But FWIW, I run 26* total timing in my naturally aspirated aluminum block/headed 346ci and it's pretty much that way from 2500 rpm's to 6700 rpm's...through full exhaust, lol... :shock:

[sixtyninemercury]

No reason to get upset:-)

How about some more info on your combo and see what some suggestions might be...we don't give bad advise and blow smoke up your you know what around here, like most other sites..... but we need the info to steer you in the right direction

I'm really not upset. I do appreciate the help that I've gotten at this site for sure!

[sixtyninemercury]

My timing setting's kinda a moot point since it's 31 years newer, a Chevrolet, and the technology has changed a little as far as timing control.

But FWIW, I run 26* total timing in my naturally aspirated aluminum block/headed 346ci and it's pretty much that way from 2500 rpm's to 6700 rpm's...through full exhaust, lol... :shock:

Times must have changed alot!!! 26 degrees of total timing and your N/A SBC does mid 11's . . .damn. :shock:

[sixtyninemercury]

How about some more info on your combo and see what some suggestions might be...we don't give bad advise and blow smoke up your you know what around here, like most other sites..... but we need the info to steer you in the right direction

Here are my Mercury's specs:

They are on the next reply'd post that I just did - works out to be on page #2 on this same thread. The Putfile page that was my specs were way too difficult too read - the new ones I made are clear.

Thanks to everyone for their help! :-)

[sixtyninemercury]

My Mercury's specs:

351W block
1/2" chain driver's side torque strap
Edelbrock Performer RPM #60259 heads (2.02"/1.60")
4.060” dished pistons
Heads milled for 9.5cr
Felpro #1011-2 head gaskets
Harland Sharp 1.6:1 roller rockers
Chet Herbert 5/16"x.083"x8.200" hardened pushrods
Comp Cam camshaft #XE-274H (#35-246-3 kit)
230°/236°@.050", .519"/.523", 110 degree LSA
Advanced 4 degrees, hydraulic tappet lifters, dual roller timing chain
Holley #0-82750 HP carb – 750cfm vacuum secondary
5/16"-18 uss/coarse thread - air cleaner stud
Jets - #76 primary, #84 secondary
Power Valve – 8.5" vacuum
Discharge nozzle - .035" tube-type, w/ hollow screw, 30cc accelerator pump
Accelerator pump cam – #466 orange in #2 position
(2) primary air/fuel idle mixture screws set @ 1½ccw
Edelbrock 110 GPH street fuel pump #1725 – w/ #1797 bottom-feed pump base
RCI circle-track plastic 22gallon fuel cell – no foam or sensor inside
Edelbrock Performer RPM Air-Gap intake manifold (torque bolts 20ft/lbs)
Felpro #1250 intake manifold gasket
Duralast #15358 - 180º thermostat, Felpro #35067 water outlet gasket
Goodyear radiator hoses: Upper M60686, Lower S60620
5"x14" S&B air filter w/open-top S&B Power Plus cotton gauze filter cover
Fram #G3 - 3/8" fuel filter
AOD transmission - with Transgo HP shift kit
A+ overdrive servo, 2600rpm non-lock-up torque converter, external cooler
TransGo Hi-Rev kit and a modified TV limit valve to increase shift points
4.56:1 ring & pinion in 9" differential w/Trak-Loc
Pinion angle = -5º, driveshaft = -4º, differential = -1º
Doug Thorley #THY-268 headers - 1⅝” primaries, 2¼”D collector body 9”L
True dual 3” pipes after tuned collector w/driveshaft safety bar
Flowmaster 50 series Delta flow mufflers #943051, custom 12"L turn downs
Pertronix Flamethrower mechanical distributor - 1 copper, 1 silver spring
MSD Blaster II ignition coil
MSD #31389 - 8.5mm Super Conductor wires
Champion #RC12YC spark plugs – gapped @ .035"
Powermaster #27294 100-amp one-wire chrome polished alternator
Goodyear Gatorback #15406 alternator/fan V-belt
Exide Orbital battery (950 CA @ 32°F) #ORB78DT-84 mounted in trunk
A1 Cardone #10-1379 re-manufactured master cylinder
Raybestos #PGD14R disc brake pads, Raybestos #152PG drum brake shoes
Pacer wheel rims: Front – 14" x 7", Rear – 15" x 8"
Dunlop G/T Qualifier tires: Front – P195/60R14, Rear - P295/50R15
P295/50R15 = 11½”W x 25½”D (on the car now)
Lakewood drag shocks: Front – 90/10, Rear - 50/50
Napa Front wheel stud: #641-1612, Nut: #641-2024
Wheel lug nuts - torque to 80ft/lbs
Front rotor grease seal – Timken #6815
Front rotor inner bearing w/bearing cup – Timken #SET6 or #BR6 or #A6
Front rotor outer bearing w/bearing cup – Timken #SET2 or #BR2 or #A2
Valvoline VR-1 20w-50 motor oil - 5 quarts
Fram Extra-Guard #PH8A motor oil filter
½"x20 single-oversized w/"piggyback" oil pan drain plug w/⅜"drain bolt
RTV silicone as a gasket/sealer on ⅜” drain bolt

[sixtyninemercury]

Whatcha think?

[Gator]

My Mercury's specs:

351W block
1/2" chain driver's side torque strap
Edelbrock Performer RPM #60259 heads (2.02"/1.60")
4.060” dished pistons
Heads milled for 9.5cr
Felpro #1011-2 head gaskets
Harland Sharp 1.6:1 roller rockers
Chet Herbert 5/16"x.083"x8.200" hardened pushrods
Comp Cam camshaft #XE-274H (#35-246-3 kit)
230°/236°@.050", .519"/.523", 110 degree LSA
Advanced 4 degrees, hydraulic tappet lifters, dual roller timing chain
Holley #0-82750 HP carb – 750cfm vacuum secondary
5/16"-18 uss/coarse thread - air cleaner stud
Jets - #76 primary, #84 secondary
Power Valve – 8.5" vacuum
Discharge nozzle - .035" tube-type, w/ hollow screw, 30cc accelerator pump
Accelerator pump cam – #466 orange in #2 position
(2) primary air/fuel idle mixture screws set @ 1½ccw
Edelbrock 110 GPH street fuel pump #1725 – w/ #1797 bottom-feed pump base
RCI circle-track plastic 22gallon fuel cell – no foam or sensor inside
Edelbrock Performer RPM Air-Gap intake manifold (torque bolts 20ft/lbs)
Felpro #1250 intake manifold gasket
Duralast #15358 - 180º thermostat, Felpro #35067 water outlet gasket
Goodyear radiator hoses: Upper M60686, Lower S60620
5"x14" S&B air filter w/open-top S&B Power Plus cotton gauze filter cover
Fram #G3 - 3/8" fuel filter
AOD transmission - with Transgo HP shift kit
A+ overdrive servo, 2600rpm non-lock-up torque converter, external cooler
TransGo Hi-Rev kit and a modified TV limit valve to increase shift points
4.56:1 ring & pinion in 9" differential w/Trak-Loc
Pinion angle = -5º, driveshaft = -4º, differential = -1º
Doug Thorley #THY-268 headers - 1⅝” primaries, 2¼”D collector body 9”L
True dual 3” pipes after tuned collector w/driveshaft safety bar
Flowmaster 50 series Delta flow mufflers #943051, custom 12"L turn downs
Pertronix Flamethrower mechanical distributor - 1 copper, 1 silver spring
MSD Blaster II ignition coil
MSD #31389 - 8.5mm Super Conductor wires
Champion #RC12YC spark plugs – gapped @ .035"
Powermaster #27294 100-amp one-wire chrome polished alternator
Goodyear Gatorback #15406 alternator/fan V-belt
Exide Orbital battery (950 CA @ 32°F) #ORB78DT-84 mounted in trunk
A1 Cardone #10-1379 re-manufactured master cylinder
Raybestos #PGD14R disc brake pads, Raybestos #152PG drum brake shoes
Pacer wheel rims: Front – 14" x 7", Rear – 15" x 8"
Dunlop G/T Qualifier tires: Front – P195/60R14, Rear - P295/50R15
P295/50R15 = 11½”W x 25½”D (on the car now)
Lakewood drag shocks: Front – 90/10, Rear - 50/50
Napa Front wheel stud: #641-1612, Nut: #641-2024
Wheel lug nuts - torque to 80ft/lbs
Front rotor grease seal – Timken #6815
Front rotor inner bearing w/bearing cup – Timken #SET6 or #BR6 or #A6
Front rotor outer bearing w/bearing cup – Timken #SET2 or #BR2 or #A2
Valvoline VR-1 20w-50 motor oil - 5 quarts
Fram Extra-Guard #PH8A motor oil filter
½"x20 single-oversized w/"piggyback" oil pan drain plug w/⅜"drain bolt
RTV silicone as a gasket/sealer on ⅜” drain bolt

Just to clarify... was that Black or Blue RTV on the 3/8" drain bolt :confused:

[sixtyninemercury]

OK - this should be more to the point to help me in your thoughts on setting my ignition timing -


351W block
Edelbrock Performer RPM #60259 heads (2.02"/1.60")
4.060” dished pistons
Heads milled for 9.5cr
Harland Sharp 1.6:1 roller rockers
Comp Cam camshaft #XE-274H (#35-246-3 kit)
230°/236°@.050", .519"/.523", 110 degree LSA
Advanced 4 degrees, hydraulic tappet lifters
Holley #0-82750 HP carb – 750cfm vacuum secondary
Jets - #76 primary, #84 secondary
Power Valve – 8.5" vacuum
Discharge nozzle - .035"
Accelerator pump cam – #466 orange in #2 position
(2) primary air/fuel idle mixture screws set @ 1½ccw
Edelbrock 110 GPH street fuel pump #1725
Edelbrock Performer RPM Air-Gap intake manifold
Duralast #15358 - 180º thermostat
AOD transmission - with Transgo HP shift kit
A+ overdrive servo, 2600rpm non-lock-up torque converter, external cooler
TransGo Hi-Rev kit and a modified TV limit valve
4.56:1 ring & pinion in 9" differential w/Trak-Loc
Doug Thorley #THY-268 headers - 1⅝” primaries, 2¼”D collector body 9”L
True dual 3” pipes after tuned collector
Flowmaster 50 series Delta flow mufflers #943051, custom 12"L turn downs
Pertronix Flamethrower mechanical distributor - 1 copper, 1 silver spring
MSD Blaster II ignition coil
MSD #31389 - 8.5mm Super Conductor wires
Champion #RC12YC spark plugs – gapped @ .035"

[250mav]

sounds like a bad ass engine. need something like that in my Mav.

sorry i cant be any help. ive just got a straight 6 for now

[sixtyninemercury]

sounds like a bad ass engine. need something like that in my Mav.

sorry i cant be any help. ive just got a straight 6 for now

Thanks bro - keep working and saving and you can trade up.

FWIW - after tuning and testing on SoCal streets - the best power that I can feel with my butt on the seat

(and before anyone replys to that w/ the usual "LOL and LMAO" I don't take it to the track to tune it because it's my daily driver and I'm saving $ for my next motor so I can't afford dyno tuning)


soooooo, without detonating nor lagging/slowing this motor's timing is set at 14* initial at 1000rpm and total timing of 38* all coming in at 2500rpm. :salute:

[1100hp]

what you set it at is pretty good.. i would go to the track and back it down one or two. and see if it picks up..but that is real close

[bottledgt]

i would say you should see the best on that between 36 to maybe 38. just have to play with it. every combo reacts differently

[250mav]

Thanks bro - keep working and saving and you can trade up.




yea, definatly. i hope to have 2 more cylinders at some point over the summer :-D