Engine timing and Nitrous
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Joined: Oct 1999
Posts: 533
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From: Ft. Worth, TX
Engine timing and Nitrous
What's the highest timing you have gotten away with without detonation? I have the NOS 150HP kit and I sprayed with timing @ 5* BTDC and suprisingly there was NO detonation.
I had 93-octane fuel and 48PSI.
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89' Iroc-Z
ZZ3 short block-355 TPI ZZ9 cam
NOS 150 shot.
blah...blah...blah..
95' T-56, 6-speed
99' Z' rearend w/ 4.10's
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1997 black Trans AM
A4, bone stock except for the Flowmaster.
The crazy fool racer of the UNfamous SW crew.
I had 93-octane fuel and 48PSI.
------------------
89' Iroc-Z
ZZ3 short block-355 TPI ZZ9 cam
NOS 150 shot.
blah...blah...blah..
95' T-56, 6-speed
99' Z' rearend w/ 4.10's
------------------
1997 black Trans AM
A4, bone stock except for the Flowmaster.
The crazy fool racer of the UNfamous SW crew.
Member
Joined: Jan 2000
Posts: 128
Likes: 0
From: Albany NY
I normally run at 16 degrees initial. If I'm going to spray, I back it down to 12. I'm running the 150 shot cheater kit, and usually use 93 or 94 octane. I've never run into a detonation problem.
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91 Firebird Formula. Converted to carb. Holley 750. Forged Flat top pistons. 10.5 to 1 compression. ZZ-9 Cam. Ported L98 Heads.
150 shot NOS, 700r4 w/ 3000 rpm converter and 3.73s in the back. Headers w/ full dual exhaust. 27.5 inch McCrearys. (free slicks)
12.98 @ 106 Natural,
11.83 @ 113 NOS.
------------------
91 Firebird Formula. Converted to carb. Holley 750. Forged Flat top pistons. 10.5 to 1 compression. ZZ-9 Cam. Ported L98 Heads.
150 shot NOS, 700r4 w/ 3000 rpm converter and 3.73s in the back. Headers w/ full dual exhaust. 27.5 inch McCrearys. (free slicks)
12.98 @ 106 Natural,
11.83 @ 113 NOS.
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