how much timing with a 75 shot

LX XLR8R · 09-10-2001, 03:01 PM

NOS dry 75 shot..alum heads, 2 range colder plugs..my buddy has it at 10 and i think thats way to low cuz we usually run 16..any thoughts

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1987 black notch(ex 4 banger)
DSS 306 w/ main support...Elderbrock 6028 heads..gt-40 intake..24# injectors...70 mm tb..77 pro-m...accel 300+..mac full legnth..tremec w/ pro5oh...full MAC exhaust,off road h-pipe,long tubes, catback...ron davis radiator..subframes, control arms...CFDF II..o yea holley FPR sucks..dont buy one..
AIM=onesillynotch

PKRWUD · 09-10-2001, 03:52 PM

For a 75 shot, a reduction of 2 degrees is plenty. If you normally run trouble free at 16 BTDC, retard it to 14.

Take care
~Chris

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Retired Moderator
MustangNet

My site: JimPorterRacing

RACECAR spelled backwards is RACECAR

HEY !!! Are you ASE Certified ??? If you are, ask me about iATN. The best tool you'll ever have, and it's free !!!

86GT · 09-10-2001, 05:48 PM

I'm running 10 degrees for a 125 shot with one heat range colder plugs.

I agree completely with PKRWUD, go with a couple degrees less. Running it at 10 will be fine, but you can try more, just be careful, if it starts to spark knock, then back it off. Otherwise, have fun!

exgmguy · 09-10-2001, 06:11 PM

I ran 15 degrees on motor and spray with a 75 shot. Never a problem.

Spraying 150 I burned a plug with 15 degrees and hosing it after sitting in cruise traffic @ 200 degrees. I have sprayed 150 a lot with 15 degrees while the engine is running cooler though with no problems.

------------------
1988 Mustang GT
11.8 @ 123 (7/14/01)
1992 BadAzz Wrangler
1993 Explorer

See my car at: www.mustangworks.com/cgi-bin/moi-display.cgi?179

09-10-2001, 03:01 PM	#1
LX XLR8R Dirk Diggler Join Date: Feb 1999 Location: SLOATSBURG, NY Posts: 1,931	how much timing with a 75 shot NOS dry 75 shot..alum heads, 2 range colder plugs..my buddy has it at 10 and i think thats way to low cuz we usually run 16..any thoughts ------------------ 1987 black notch(ex 4 banger) DSS 306 w/ main support...Elderbrock 6028 heads..gt-40 intake..24# injectors...70 mm tb..77 pro-m...accel 300+..mac full legnth..tremec w/ pro5oh...full MAC exhaust,off road h-pipe,long tubes, catback...ron davis radiator..subframes, control arms...CFDF II..o yea holley FPR sucks..dont buy one.. AIM=onesillynotch

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09-10-2001, 03:52 PM	#2
PKRWUD Junior Member Join Date: Mar 1999 Location: Ventura, California Posts: 8,981	For a 75 shot, a reduction of 2 degrees is plenty. If you normally run trouble free at 16 BTDC, retard it to 14. Take care ~Chris ------------------ Retired Moderator MustangNet My site: JimPorterRacing RACECAR spelled backwards is RACECAR HEY !!! Are you ASE Certified ??? If you are, ask me about iATN. The best tool you'll ever have, and it's free !!!

09-10-2001, 05:48 PM	#3
86GT Sniffed too much n20 Join Date: Oct 1998 Location: Ont, Canada Posts: 1,018	I'm running 10 degrees for a 125 shot with one heat range colder plugs. I agree completely with PKRWUD, go with a couple degrees less. Running it at 10 will be fine, but you can try more, just be careful, if it starts to spark knock, then back it off. Otherwise, have fun!

09-10-2001, 06:11 PM	#4
exgmguy Registered Member Join Date: Feb 1999 Location: Utica, Michigan Posts: 2,631	I ran 15 degrees on motor and spray with a 75 shot. Never a problem. Spraying 150 I burned a plug with 15 degrees and hosing it after sitting in cruise traffic @ 200 degrees. I have sprayed 150 a lot with 15 degrees while the engine is running cooler though with no problems. ------------------ 1988 Mustang GT 11.8 @ 123 (7/14/01) 1992 BadAzz Wrangler 1993 Explorer See my car at: www.mustangworks.com/cgi-bin/moi-display.cgi?179