Help 1/8th mile time

[86c10sbc]

Anybody have any 1/8th times? I have an 86 c10 swb 2wd, 12 bolt rear end locker, 3.73s, th350, 355 4 bolt mains stock rods and crank flat top pistons, 64cc aluminum heads, 190cc intake runners 2.02 intake 1.60 exhaust, edelbrock aluminum intake holley 690cfm, comp motha thumpa cam, 1.5 ratio rockers, traction bars and 255/70s out back (had 15.50s but they broke sprag in th350 they are for sale now)... It feels fast but I don't have a speedo or a dyno, and my sense of speed has been ruined by riding sport bikes, so I'm used to a lot faster... And I called out my friends 12' mustang gt 5.0... He ran an 8.8 1/8th I was wondering if anyone thought I'd be close to that
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[Zane M]

I doubt it. But I have no experience or knowledge to back up my guess.

[86c10sbc]

Yea me neither... I just did a 0-1st gear pull should have been about 60mph in 6.8sec. I left real easy never spun. So maybe 6.5sec 0-60
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[mgchevyparts]

That GT is 412 horsepower in a 3600lb car, that's horsepower at the rear wheels. I doubt you're making that amount of power based on your specs but even if you are he's still about 800- 1000lbs lighter. I'd say he'll eat you alive especially in an 1/8th mile.

[07XCSBZ71]

Originally Posted by mgchevyparts

That GT is 412 horsepower in a 3600lb car, that's horsepower at the rear wheels. I doubt you're making that amount of power based on your specs but even if you are he's still about 800- 1000lbs lighter. I'd say he'll eat you alive especially in an 1/8th mile.

Thats 412 HP SAE @ the FLYWHEEL. If they were 412 RWHP they would be 530hp at the flywheel and be a hell of alot faster than 13.0's@ 110 mph. Thats with a pro driver, on a closed coarse, not a street race. In the real world we're talking 13.6-.8 @ 107ish. 3600lbs is base no option GT coupe, Options add weight fast.

I make 5.slow GTs cry atleast 3 times a week in my old ass Vette. They are my favorite car to pick on. LOL

[86c10sbc]

Originally Posted by 07XCSBZ71

Thats 412 HP SAE @ the FLYWHEEL. If they were 412 RWHP they would be 530hp at the flywheel and be a hell of alot faster than 13.0's@ 110 mph. Thats with a pro driver, on a closed coarse, not a street race. In the real world we're talking 13.6-.8 @ 107ish. 3600lbs is base no option GT coupe, Options add weight fast.

I make 5.slow GTs cry atleast 3 times a week in my old ass Vette. They are my favorite car to pick on. LOL

Man I love whoopin up on stangs I need to be lighter but don't want to give up my interior... What does your vette have? I'm trying not to take my truck to the track cause with my luck that trans will take a dump on me and ill have to haul it home, but it's hard to resist... How much y'all think 110 octane will help?
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[07XCSBZ71]

Originally Posted by 86c10sbc

Man I love whoopin up on stangs I need to be lighter but don't want to give up my interior... What does your vette have? I'm trying not to take my truck to the track cause with my luck that trans will take a dump on me and ill have to haul it home, but it's hard to resist... How much y'all think 110 octane will help?
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I just have a base coupe 6spd with no options. 30# injectors, adjustable FPR, exhaust, no cats, tune, roller rockers, and very sticky 315s

[86c10sbc]

Maybe I need to trash talk him some more and psych him out and he will red light or something lol
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[Recian]

1/8 is all about reaction time and 60 ft times which comes down to the driver. In my area and especially at my shop 1/8 mile is a big thing. My co workers run every weekend. That time sounds about right for that model. I bet he could do better with a few bolt on mods. Best way to know is take your truck to the local strip and run it a few passes and get the feel for it and see how it does.
You've got more motor but a heavier, boxier and technologically inferior vehicle and that '12 5.0 has modern computer management. I drove a '12 or '13, cant remember the year 5.0 GT one recently with a 6 speed and I could break the tires loose downshifting from 4th to 3rd going down the highway. Honestly the new V6 mustang is nothing to put down either. I drove one thinking it was a V8 til I popped the hood. Major increase from the older models.

[86c10sbc]

Any guesstimates on my power? I've heard 400 at the crank from a few people... And my trans is slipping burnt up the clutches when it popped the sprag... Trying to get rid of those weld wheels and mickey Thompsons to get a good solid trans
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[Recian]

Isn't the 355 just a bored 350? I know they came in a lot of power ratings depending on the year and model. With your mods I would think you're close. But being a truck I'd watch torque just as much as HP since you need it to pull the weight your truck has over most cars.

My 305 only has 150hp new. I can only imagine what it has now at 158k. But it was rated over 250 torque which is why it has no real trouble moving my longbed truck. It's no racecar but it would take my mitsu mighty max with it's 4 banger rated at like 95hp and 108 tq any day and that mitsu had about 1000 lbs on me.

[86c10sbc]

Yea 350 bored 30 over
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[Recian]

I would assume the hp is around 250 just bored .030 over not considering all the other mods so yeah I wouldn't say 400 is totally out there. I would still say that mustang's got a good leg up on ya. The GT is SUPPOSED to have IRS and better suspension which would make it hook a lot better.

[86c10sbc]

In planning on slicks and either a built 700r4 or a built th350 next summer. Anyone think a 100 shot would break a rod? It's not forged and its pretty high compression, and I've never messed with the stuff
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[Recian]

If you aren't running over 10.5:1 or so then a 100 shot should be fine if you know when and how to use it. I haven't heard bad things about the integrity of 350's stock rods. If you're higher than that or stroked you don't really need it. One guy at work plans to build a 11:1 5.1 for his mustang and use a 150 shot. Granted he's going forged but still. Go with a 700r4. Your wallet will thank you in the long run when you're crusing down the highway

[86c10sbc]

Thanks guys I'm gonna keep talkin trash to him I'm a fan of all fast vehicles but nothing beats the feeling of whooping a ford lol
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[INSIDIOUS '86]

Throw on a 750 holley and wake the sucker up. 1.6 rockers will help the power well. But that new 5.0 will still prob rape you with traction control alone. You need traction and a trans that will handle a launch and tires to put it to the ground. And you better have a stall about 2500-3000. You should be Bout 400hp then.
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[86c10sbc]

I have a 10" 3500 tci... Trans and some good rear tires gonna be my next upgrade then maybe some 4.11s and roller valve train... Goals for the truck are street friendly and fast, really wanna ls turbo swap it but I got a kid who likes to eat... Lol
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[Recian]

I was thinking those 255s were a bit small. Our mustang guys at work are running 300+ rear tires. That would help you stick. If you plan to give it a beating have the trans built with the tougher clutch kit and a good shift kit. They do make Kevlar clutches. I put some in the last 700r4 I rebuilt and it performed like stock but would take a beating. They make a heavy load kit and a racing style kit with different materials in the trans. Also have the common probs of the 700r4 fixed while in there like broken sun shells.

[86c10sbc]

Yea I only bought 255s to cruise around on and not tear up the trans till I get a new one, I can smoke em pretty good, like I said my boy goes through some pop tarts I'd like to have some 28x10.5 mickey Thompson e/t streets it wouldn't break those loose after they were warmed up
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[86c10sbc]

Sounds fun
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[07XCSBZ71]

Originally Posted by 86c10sbc

Sounds fun
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It is for what it is. It's build more for handling that dragging, but still hurts alot of feelings red light to red light. LOL!

The night before you race, sneak over and armor all the GT's rear tires. LOL That'll make it even for the weak trans. LOL!

[Blackpony]

The new 5.0 will run 8.0-8.3 bone stock with a good driver. Our shop test car ran a best of 12.4 at 112 bone stock then a 12.0 at 116 with nothing more then a tune. That was bone stock tires etc.
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[86c10sbc]

Well he's not a pro driver cause he went 8.8... Y'all think I could cut a 9.50?
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[KQQL IT]

Cal tracs slicks stall and good working transmission.

I kept working on 60' time went from 2.20+ to 1.67 which gained me 1.30 seconds in the 1/4
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