Is this combo good for 95 Octane fuel?
#2315871
06/04/17 11:21 AM
06/04/17 11:21 AM
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Joined: Mar 2005
Posts: 296 Germany
1964Polara
OP
enthusiast
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OP
enthusiast
Joined: Mar 2005
Posts: 296
Germany
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Hello, I know I'm on the edge of a streetable engine with that combo and I'm currently wondering if it would run with 100 Octane (European Octane) = 95 US Octane: 440=500cui Stroker 6.76 rods, 4.15 Stroke KB826 40 over pistons 4.5cc Volume Zero deck 440source Heads OOTB = 82cc 0.039 head gasket Stock Rockers (with apps. less than 1.5 ratio) HUG SEH5660BL-8 This ends up with 11,4 static compression and 9.2 dynamic compression. I've submitted the question to Hughes as well but want to gather as much possible answers. Cam specs:
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Re: Is this combo good for 95 Octane fuel?
[Re: 1964Polara]
#2316158
06/04/17 08:11 PM
06/04/17 08:11 PM
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Joined: Jul 2004
Posts: 19,318 State of confusion
Thumperdart
I Live Here
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I Live Here
Joined: Jul 2004
Posts: 19,318
State of confusion
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Champions are for weed eaters and lawn mowers in my world and I run NGK #7's or 8"s accordingly.....
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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Re: Is this combo good for 95 Octane fuel?
[Re: 1964Polara]
#2316398
06/05/17 01:50 AM
06/05/17 01:50 AM
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Joined: Aug 2003
Posts: 43,228 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,228
Bend,OR USA
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Nix Goodt I would try and have used the Champion RC9YC in similar motors on our pump gas here which is 92 U.S. octane with no ethanol. I'm around 3500 Ft above sea level so that has a effect on my results , I set the total timing to 34 degrees BTDC or less if I go down to a lower altitude to avoid pinging or the chance of hurting the motor at WOT Where are you in Deutchland (SP)?
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Is this combo good for 95 Octane fuel?
[Re: 1964Polara]
#2316616
06/05/17 02:51 PM
06/05/17 02:51 PM
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Joined: Jul 2004
Posts: 19,318 State of confusion
Thumperdart
I Live Here
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I Live Here
Joined: Jul 2004
Posts: 19,318
State of confusion
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I'm close to cologne/Düsseldorf area roughly 400ft above sea level. We will put the engine first in a stand for breaking in. I will shoot with the 0.039 head gasket and see what temperatures say on the stand. Car is a close 4000lbs 64 b Body with 2.76 rear axle and 2000 stall speed converter. I don't care about 60 feet times or so. My goal is max acceleration in 3rd gear on the highway from 3000 RPM to max speed.
Then you should be good cos that's about all that combo will be good for imo...............
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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Re: Is this combo good for 95 Octane fuel?
[Re: 1964Polara]
#2316975
06/06/17 01:16 AM
06/06/17 01:16 AM
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Joined: May 2008
Posts: 5,399 Aurora, Colorado
451Mopar
master
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master
Joined: May 2008
Posts: 5,399
Aurora, Colorado
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This is what I am using: NGK 7173 R5672A-8 Racing Plug $2/each. Heat range 8 https://www.ngk.com/product.aspx?zpid=10047I don't know about the fuel over here, but I think your pushing the limit? The Stealth heads don't have as good a chamber and spark plug location as something like the smaller chamber Victor, Trick Flow, and B1 B/S heads. Cool air into the engine and cooler engine operating temps (160-180 degrees F) should help
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Re: Is this combo good for 95 Octane fuel?
[Re: 1964Polara]
#2316980
06/06/17 01:35 AM
06/06/17 01:35 AM
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Joined: Jan 2003
Posts: 14,506 So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
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Posts: 14,506
So. Burlington, Vt.
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The cam seems huge to me for 4000lbs/2000 stall/2.76 gears.
I would have gone about the whole thing differently to more insure it would have been pump gas friendly.
I know............Not much(any?)help.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: Is this combo good for 95 Octane fuel?
[Re: 1964Polara]
#2317006
06/06/17 02:45 AM
06/06/17 02:45 AM
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Joined: Aug 2003
Posts: 43,228 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,228
Bend,OR USA
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I will report how this runs on the Autobahn.... I spent nine months stationed in Hanau, Germany in 1967/68, we military drivers always stayed in the right lane on the Autobahn except when we would occasionally pass some slower trucks or cars and we used the rear view mirrors a lot. You had to laugh when Poppa and Mamma with the two kids in the back seat all dressed up for a outing in their Merdedes four door sedan going as fast as poppa could make it go would not move out of the left lane to let some single German driver by himself in a smaller BMW flashing his lights on the Mercedes rear bumper for him to pull over, that was NOT going to happen For those in this country that don't know, their is no speed limit on the autobahn, you can go as fast as it is safe You did not want to get caught by the Polizi(SP?) passing any vehicle on the right side on the Autobahn, they did not allow any passing on the right side Different country, different rules
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Is this combo good for 95 Octane fuel?
[Re: 1964Polara]
#2317021
06/06/17 05:32 AM
06/06/17 05:32 AM
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Joined: Mar 2005
Posts: 296 Germany
1964Polara
OP
enthusiast
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OP
enthusiast
Joined: Mar 2005
Posts: 296
Germany
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We put it together that way on a engine stand for breaking in the cam and gonna see if detonation will occur. For the setup...my cruising speed is 60-70mls equals 2000/2500RPM in third gear. How much torque can I expect at 2000/2500RPM? 300/400??? If running slower than 60mls there is still the manual VB to use 2nd gear.
Last edited by 1964Polara; 06/06/17 05:33 AM.
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Re: Is this combo good for 95 Octane fuel?
[Re: 1964Polara]
#2382991
10/06/17 03:14 PM
10/06/17 03:14 PM
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Joined: Aug 2003
Posts: 43,228 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,228
Bend,OR USA
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Congrats on the results It was a real eye opener for me when the first gas crisis occurred here and I ended up buying a Toyota 2000 CC 4 cyl. truck to drive to work , no power I had never owned a 4 or 6 cylinder car or truck before that so the power difference was a new expereince I can not imagine your sensations with that stroker BB in your car Be real careful in the rain trying WOT
Last edited by Cab_Burge; 10/06/17 03:14 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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