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I've been running the 6s (TR6/4177) with good luck up to about 15psi. Stock compression 5.3 on 93 **** pump with wiper fluid and 15psi 78/75 VS turbo. Now wondering if I should be running 7s... hm. I spend alot of time out of boost as its a street car so I didnt want to go too cold on the plugs.
Originally Posted by ddnspider
Your washer fluid is saving you IMO.
With the low compression of most 5.3's and that baby turbo he probably doesn't even need the wiper fluid on 15psi as I doubt its even making 600hp. Even so TR6 are plenty fine for 650hp!
So you think I need the 7s? Any negatives of the 7s when not in boost? Do I need to lean out the AFR at idle on the 7s or 6s? I idle in the 14:1 range.
So you think I need the 7s? Any negatives of the 7s when not in boost? Do I need to lean out the AFR at idle on the 7s or 6s? I idle in the 14:1 range.
Nope, I have zero concerns with TR6 at your power level. I also don't think there are any negatives to the 7's but not needed unless your going to turn it up.
People always seem to rush to cold plugs, E85, low compression, etc just to run a little boost. Thousands of pump gas supercharged cars out there sent out the door by GM with heat range 6 plugs, people raise the boost and do boltons with the same plugs with no issue.
^There's no downside like you said.....only cushion to be gained against a bad tank of gas or an accidental over boost.
I've almost doubled his boost on TR6's with no issues lol Also done tons of cars with almost a full point higher compression on 15PSI on TR6's with zero issues.
Take a look at the plugs if they look like they need to go cooler then do so, but I doubt the heat mark is that far down the plug on his setup. We've run the 7's to over 1200hp so running that cool of a plug for half the power doesn't really seem worth it.
Man up? I’m not a man because I want to keep my rare car nice? We had an inch of ice followed by 17” of snow just in one day this week then negative temps the next day. Other than putting my GTO away we went on like normal. This weather would bring Texas to a stand still. This is small town redneck central we grew up drifting gravel roads before we were old enough to get a license. On snow days we get cleared to drive our atv’s on the streets then it gets real fun. I had a low 10’s turbo Buick in the mid 90’s and a low 10’s gto in 2007 now I’m older and 10’s is t what it was back then, but I’d like to keep my gto nice because they are getting hard to find parts for these days.
Man up? I’m not a man because I want to keep my rare car nice? We had an inch of ice followed by 17” of snow just in one day this week then negative temps the next day. Other than putting my GTO away we went on like normal. This weather would bring Texas to a stand still. This is small town redneck central we grew up drifting gravel roads before we were old enough to get a license. On snow days we get cleared to drive our atv’s on the streets then it gets real fun. I had a low 10’s turbo Buick in the mid 90’s and a low 10’s gto in 2007 now I’m older and 10’s is t what it was back then, but I’d like to keep my gto nice because they are getting hard to find parts for these days.
Dude, settle down, it was just a joke. It'd be nice if everyone wasn't so serious around here, it's just cars. I mean, i could see if I were talking about kicking puppies and raping women...jeez. Lighten up folks.
I've almost doubled his boost on TR6's with no issues lol Also done tons of cars with almost a full point higher compression on 15PSI on TR6's with zero issues.
Take a look at the plugs if they look like they need to go cooler then do so, but I doubt the heat mark is that far down the plug on his setup. We've run the 7's to over 1200hp so running that cool of a plug for half the power doesn't really seem worth it.
I've seen speckling on an LS1 at 8 psi with teens for timing on a 7875...it really comes down to the setup. I just like 7's for the cushion that they give.
that would be pretty disappointing if I weren’t in the 500’s. I will say that according to my weight, et and trap speed and duty cycle in my stock injectors, I had to be over 400 wheel naturally aspirated. So I’d hope that 10psi would give me a little more than 500 wheel.
Dude, settle down, it was just a joke. It'd be nice if everyone wasn't so serious around here, it's just cars. I mean, i could see if I were talking about kicking puppies and raping women...jeez. Lighten up folks.
I've seen enough of your posting style to not get rattled and know you were having fun. I'm having fun also or I wouldn't keep posting. It is redneck central here. No prep racing at the local track gets a hell of a turnout, but nothing compared to the redneck rally races. Little front wheel drive beaters going on a dirt/mud course with with hills, jumps, etc. Some of those cars are as nice as my daily. They just knock out the glass spray can a number on them and race. It pays more than drag racing here and packs the stands. I mean packs them and the pits.
that would be pretty disappointing if I weren’t in the 500’s. I will say that according to my weight, et and trap speed and duty cycle in my stock injectors, I had to be over 400 wheel naturally aspirated. So I’d hope that 10psi would give me a little more than 500 wheel.
I think he's pretty close on the rwhp guess. I was 390 rwhp cam only so you were probably over 400 rwhp NA. I didn't dyno after the procharger, but on an overly conservative tune because I was just learning by trap speed estimates in the 1/8th I was about 460 rwhp. That was on pump and 8 psi, but still very disappointing. With 10 psi and E85 with better tuning as well estimating by trap speed I was about 550 rwhp. So I figured I gained about 35 rwhp from the extra 2 psi and the rest from tuning and the advantages of E85. I'd say with the same boost with a turbo and better heads than I have you'd be a little higher at the same boost level unless you become overly octane limited because of the higher compression and pump.
that would be pretty disappointing if I weren’t in the 500’s. I will say that according to my weight, et and trap speed and duty cycle in my stock injectors, I had to be over 400 wheel naturally aspirated. So I’d hope that 10psi would give me a little more than 500 wheel.
6.0 ,TU1 cam, LS6 intake, ported TB, 7875, 9:5 comp, TH400. Pretty standard stuff, but then again, my tune up really too conservative. Probably would have made 510 or so at 10psi.
6.0 ,TU1 cam, LS6 intake, ported TB, 7875, 9:5 comp, TH400. Pretty standard stuff, but then again, my tune up really too conservative. Probably would have made 510 or so at 10psi.
You in louisiana right? IMO they have enough E85 stations to make it worth while to go flex fuel. My nearest station is 20 miles away and I happily make the trip, just bring a few gas jugs when I fuel up.
Meh, no biggie. Long as it runs decent on the track/street, that's the real measuring stick. For a full weight everything intact street car, I'm satisfied. Another thing, show me a NA 365 cube motor putting down 510, and let's see how it drives. I think the real question should be, what are you guys running at the track? Top is spring pressure, bottom is turned up, 19ish i think. Take with a grain of salt, still on the 7.5 so no boosted launches. Bottom slip is on a tire, whereas the top was still on a 320 compound 315.
Last edited by Game ova; Nov 30, 2018 at 10:53 AM.
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