Octane Boosters
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Laughing Gas
Joined: Jun 2003
Posts: 1,166
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From: Chino, California
That 429 is awesome! I had one in a Torino GT and it was a kick in the pants, literally!
I don't know what fuels are offered in the state of Washington, But here in California Unocal sells racing fuel but it's outrageously expensive.
As for the lead substitute, who needs it? If I remember correctly the '73's came with hardened valve seats to accomodate the new lo-lead gasolines, and should hold up well with no-lead gas.
What's the c/r on that 429? 11:1?
I don't know what fuels are offered in the state of Washington, But here in California Unocal sells racing fuel but it's outrageously expensive.
As for the lead substitute, who needs it? If I remember correctly the '73's came with hardened valve seats to accomodate the new lo-lead gasolines, and should hold up well with no-lead gas.
What's the c/r on that 429? 11:1?
Postmaster
Joined: Mar 2003
Posts: 4,038
Likes: 2
From: Spokane WA
Originally posted by pops_91710
That 429 is awesome! I had one in a Torino GT and it was a kick in the pants, literally!
I don't know what fuels are offered in the state of Washington, But here in California Unocal sells racing fuel but it's outrageously expensive.
As for the lead substitute, who needs it? If I remember correctly the '73's came with hardened valve seats to accomodate the new lo-lead gasolines, and should hold up well with no-lead gas.
What's the c/r on that 429? 11:1?
That 429 is awesome! I had one in a Torino GT and it was a kick in the pants, literally!
I don't know what fuels are offered in the state of Washington, But here in California Unocal sells racing fuel but it's outrageously expensive.
As for the lead substitute, who needs it? If I remember correctly the '73's came with hardened valve seats to accomodate the new lo-lead gasolines, and should hold up well with no-lead gas.
What's the c/r on that 429? 11:1?
Yes youre right on the seats in the 73's, but my motor is earlier than that, 70 or 71 I think, but cant remember which, it came outa a land yacht of some sort based on the block number (D0VE-A)
I THINK the compression ratio is 10.5:1 but again, Im not sure, I read about lead being something that resists detonation, thus improving Octane greatly with just a few grams per gallon, Im not sure if Lead SUBSTITUTE would accomplish that as well, so thought I would pose that question, thanks for all the replys guys, keep em' coming
I bought the whole truck for $500 because the guy said it was backfiring through the carb and he couldnt figure out why, so either I get to adjust timing (which he said he did) or worst case have some head work done to the D0VE-c's that are on it I guess, but getting it running is the first step....
Postmaster
Joined: Mar 2003
Posts: 4,038
Likes: 2
From: Spokane WA
No, its not up and running yet, just planning 
thanks for that though im glad you think that, I am a little nervous though because some here dont think so, and if it does run on 92 EXCELLENT......
Is there a difference between gas stations? or is 92 at chevron gonna be the same as 92 at texaco?
thanks for all your replies, your making me feel better at least
thanks for that though im glad you think that, I am a little nervous though because some here dont think so, and if it does run on 92 EXCELLENT......
Is there a difference between gas stations? or is 92 at chevron gonna be the same as 92 at texaco?
thanks for all your replies, your making me feel better at least
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Laughing Gas
Joined: Jun 2003
Posts: 1,166
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From: Chino, California
92 octane is the same anywhere you go. It is a standard set my the industry.
I believe some of these newer hot cars are running around the 10.5 c/r which is why they have to burn premium (92). Beemers, Lexus and the like. So you should do okay. Just may have to back off on ther spark advance a little if it pings at specs. You might look into buying a knock sensor and add it on. I am not sure if they still sell them anymore. I'll do a little research and see..
Dropping your c/r a half a point really won't kill too many horses if any. Just use a thicker head gasket.
I believe some of these newer hot cars are running around the 10.5 c/r which is why they have to burn premium (92). Beemers, Lexus and the like. So you should do okay. Just may have to back off on ther spark advance a little if it pings at specs. You might look into buying a knock sensor and add it on. I am not sure if they still sell them anymore. I'll do a little research and see..
Dropping your c/r a half a point really won't kill too many horses if any. Just use a thicker head gasket.
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Joined: Mar 2004
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From: NE Ohio
Posting Guru
Joined: Feb 2004
Posts: 1,354
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From: Jackassville
yeah, another scam you usually never need more octane than 91 anyway anyomore and it doseant do anything.
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Postmaster
Joined: Mar 2003
Posts: 4,038
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From: Spokane WA
Originally Posted by FERacing66
yeah, another scam you usually never need more octane than 91 anyway anyomore and it doseant do anything.
Ummmm, no its not a scam, and yes I do need it, why dont you read the thread and interject if you have something positive to say instead of making a comment that isnt really relevant and doesnt seem to make sense.
thanks
Last edited by Icicle; Mar 28, 2004 at 03:10 PM.
Posting Guru
Joined: Dec 2003
Posts: 2,155
Likes: 3
From: Centerville, Iowa
I've found that my 300-6 runs a bit smoother actually when it runs on 87 octane, as opposed to the 89 I usually run cause its cheaper. It just seems to bring on revs a bit better to me. But *shrug* just me.
I thought lead was good for engines? Just..bad for the sniffer? Perhaps not for high performance vehicles, but some responded well I thought. Like 70's, 80's, and early 90's.
I thought lead was good for engines? Just..bad for the sniffer? Perhaps not for high performance vehicles, but some responded well I thought. Like 70's, 80's, and early 90's.
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Laughing Gas
Joined: Jun 2003
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From: Chino, California
Originally Posted by Saurian
I've found that my 300-6 runs a bit smoother actually when it runs on 87 octane, as opposed to the 89 I usually run cause its cheaper. It just seems to bring on revs a bit better to me. But *shrug* just me.
I thought lead was good for engines? Just..bad for the sniffer? Perhaps not for high performance vehicles, but some responded well I thought. Like 70's, 80's, and early 90's.
I thought lead was good for engines? Just..bad for the sniffer? Perhaps not for high performance vehicles, but some responded well I thought. Like 70's, 80's, and early 90's.
I can't imagine what 2 points lower in octane would do for an engine that could make it run better. My 300 I-6 never ran on anything but 87 octane for 13 years. Never needed anything more than that.
At least you are fair minded enough to recognize that it could be just you.
As for lead being 'good' for engines, not so. It pollutes the oil sooner. It was a cheap way to make higher octane fuels.
It was a beneficial additive for engines when they were designed to run on leaded fuels in that they had softer valve seats and the lead deposits on the seats made a 'cushion' for the valve to seat against. But that was changed thirty years ago when they began to harden the seats due to federal regs requiring lo-lead fuels.
Leaded fuels are more than bad for the sniffer, it' destroys the cat(s) as well, and will plug it up real quickly. Today's high performance engines cannot burn nor do they need leaded fuel.
Older engines can have the seats changed when the heads are off by a good machine shop.
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