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Search: Posts Made By: 86LG4Bird
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Forum: Tech / General Engine
11-12-2021, 01:19 PM
Replies: 33
Views: 28,165
Posted By 86LG4Bird

Re: Differences Between LG4 and L69?

That makes sense. 1/4 mi performance is hugely influenced by gearing, torque converter, and traction ;) . With stock gearing / TC, you don't get much payback on those engine mods.
Forum: Tech / General Engine
11-12-2021, 01:06 PM
Replies: 33
Views: 28,165
Posted By 86LG4Bird

Re: Differences Between LG4 and L69?

What are your intentions/goals for the car? A certain 1/4 mile number? You can get some decent performance from that mill..... See my sig: high 14's on motor; low 13's on the juice :)
Forum: Tech / General Engine
11-12-2021, 05:48 AM
Replies: 33
Views: 28,165
Posted By 86LG4Bird

Re: Differences Between LG4 and L69?

Which engine do you have? LG4? Vin G? Vin H? LB9? L69?
Forum: Tech / General Engine
08-31-2020, 08:47 AM
Replies: 28
Views: 60,948
Posted By 86LG4Bird

Re: 355 Vortec LT4 Hot Cam Engine Build - With Dyno Results

Oh yeah, with TPI it will run well even straight up.
Forum: Tech / General Engine
08-31-2020, 05:53 AM
Replies: 28
Views: 60,948
Posted By 86LG4Bird

Re: 355 Vortec LT4 Hot Cam Engine Build - With Dyno Results

Better for a daily driver to install it at a 106-107 ICL rather than the "dot-to-dot" 109 ICL.
That cam was created by GM for stock series road racing and it made slightly more top end power by...
Forum: Exhaust
05-31-2019, 06:20 AM
Replies: 71
Views: 13,962
Posted By 86LG4Bird

Re: How restrictive are L98 manifolds?

Since you have the Flowtechs and y-pipe already, I'd certainly use them.
You'll have trouble touching 12's with a manual, and probably never do it with 3.08's.
3.73's would be great for that car. ...
Forum: Tech / General Engine
07-20-2018, 07:34 AM
Replies: 91
Views: 11,879
Posted By 86LG4Bird

Re: Compression Test Data Wanted

TR55's are stock heat range for the L31 engine.
TR6's are one step colder.
Forum: Tech / General Engine
07-19-2018, 08:56 PM
Replies: 91
Views: 11,879
Posted By 86LG4Bird

Re: Compression Test Data Wanted

I would not run that type of plug (iridium maybe?) under any high load duty. After a short time under load, that thin center electrode cannot transfer the heat adequately and can light up like a...
Forum: Tech / General Engine
07-19-2018, 11:28 AM
Replies: 91
Views: 11,879
Posted By 86LG4Bird

Re: Compression Test Data Wanted

GM "lash point" duration numbers are screwy and meaningless IMO (very difficult to measure!). That "195" cam has somewhere around 250 deg intake duration at .006" tappet lift (typically referred to...
Forum: Tech / General Engine
07-13-2018, 12:01 PM
Replies: 32
Views: 5,864
Posted By 86LG4Bird

Re: 355 or 383 for build??

^ Bingo ;) ^
Forum: Transmissions and Drivetrain
05-29-2018, 09:00 AM
Replies: 17
Views: 1,036
Posted By 86LG4Bird

Re: looking for more hp

Exactly.
See my sig.
Then when you get tired of messing with nitrous bottles, drop in the Vortec as was already suggested ;)
Forum: Transmissions and Drivetrain
05-22-2018, 12:36 PM
Replies: 45
Views: 2,034
Posted By 86LG4Bird

Re: Considering going back to auto- which trans is best?

Huntsville Dragway? I was there for Radial vs the World last year and saw some some 3.9x radial passes!
Also have been to Baileyton.
Forum: Transmissions and Drivetrain
05-22-2018, 06:13 AM
Replies: 45
Views: 2,034
Posted By 86LG4Bird

Re: Considering going back to auto- which trans is best?

Hey ant, I just noticed you're in Huntsville. I get there a few times a year to visit my daughter. She drives the car in my sig.

Reading your TC thoughts/preferences, I'd recommend a Yank...
Forum: Tech / General Engine
05-04-2018, 11:02 AM
Replies: 2
Views: 677
Posted By 86LG4Bird

Re: Post your 10 second or quicker N/A builds.

350 gen2 sbc
rebuilt, stock bore w/hone - complete stock bottom except for ARP rod bolts
GM LT1 heads ported by Advanced Induction
Custom AI HR cam (228/234/108) .617/.617"
1.6 Comp Promag...
Forum: Transmissions and Drivetrain
04-30-2018, 12:30 PM
Replies: 28
Views: 1,947
Posted By 86LG4Bird

Re: Need Torque Converter Advice

Yep, that was damn good.
Gearing gives you good gains only when your engine is hamstrung by a tight converter.
Back when my ImpalaSS had the TC in it with stock cam and heads, going from 3.08 gears...
Forum: Transmissions and Drivetrain
04-30-2018, 12:08 PM
Replies: 28
Views: 1,947
Posted By 86LG4Bird

Re: Need Torque Converter Advice

Yep, gearing gets you very little at the strip compared to the TC upgrade. Part throttle "feel" doesn't matter there!
Stock cam LS1? Must've been a very mild one if it felt fine with a 3200 and...
Forum: Transmissions and Drivetrain
04-30-2018, 12:01 PM
Replies: 28
Views: 1,947
Posted By 86LG4Bird

Re: Need Torque Converter Advice

~3000 stall and 2.70'ish gears would get you the numbers at the strip, but would drive like crap on the street.
Complementing a higher stall converter with steeper gears, you won't get that "soggy"...
Forum: Transmissions and Drivetrain
04-30-2018, 05:53 AM
Replies: 28
Views: 1,947
Posted By 86LG4Bird

Re: Need Torque Converter Advice

That's because Comp wants to sell camshafts to EVERYONE, even those who fail to understand the need to upgrade complementary parts to realize the performance gain. It's simply marketing.
Forum: Transmissions and Drivetrain
04-27-2018, 05:31 AM
Replies: 28
Views: 1,947
Posted By 86LG4Bird

Re: Need Torque Converter Advice

Very good experience here with both 2800 and 3000 stall versions of the Street Edge (9.5")
Forum: Transmissions and Drivetrain
04-25-2018, 08:30 AM
Replies: 28
Views: 1,947
Posted By 86LG4Bird

Re: Need Torque Converter Advice

That's correct, you still want lockup for street/road driving.
Forum: Transmissions and Drivetrain
04-25-2018, 08:29 AM
Replies: 28
Views: 1,947
Posted By 86LG4Bird

Re: Need Torque Converter Advice

Summit brand is a crapshoot. As I alluded in the post above, a "3000" from them really doesn't tell you how it's going to drive. I have no experience with FTI, so I also can't tell you how that...
Forum: Transmissions and Drivetrain
04-25-2018, 08:26 AM
Replies: 28
Views: 1,947
Posted By 86LG4Bird

Re: Need Torque Converter Advice

OK, so now we have it really narrowed down :) Definitely no more than a "typical brand 3000" for street tires.
You're now at the point where the brand you choose will have more influence on its...
Forum: Transmissions and Drivetrain
04-25-2018, 07:58 AM
Replies: 28
Views: 1,947
Posted By 86LG4Bird

Re: Need Torque Converter Advice

What's the intended use for the car?
If it will always have street tires on it and just the occasional trip to the strip for sh!ts n grins, a 9.5" 2800 stall will be nice.
If you'll put DR's or...
Forum: Transmissions and Drivetrain
04-19-2018, 09:16 AM
Replies: 17
Views: 765
Posted By 86LG4Bird

Re: Carbed 700r4

Sorry, I didn't read your sig before.
For the OP, no worries ;)
Forum: Transmissions and Drivetrain
04-19-2018, 09:10 AM
Replies: 17
Views: 765
Posted By 86LG4Bird

Re: Carbed 700r4

No need to do that. If you're somehow stalling the car in 4th gear, you've got a big problem on your hands!
Seriously, no need for the brake pedal unlock. The TCC will disengage as you slow down...
Forum: Tech / General Engine
04-02-2018, 07:47 AM
Replies: 13
Views: 608
Posted By 86LG4Bird

Re: Idle Knock: Listen and Comment

Does the noise diminish somewhat as it warms up? If so, I'd say it's piston noise.
I have an old pickup with a 330k mile very worn out engine, makes a similar noise for ~20 seconds after a cold...
Forum: Tech / General Engine
03-11-2018, 09:15 AM
Replies: 7
Views: 321
Posted By 86LG4Bird

Re: 3800 Random misfire/stumble

LiveIt, We just went through a similar issue last week with my son's '96 3800.
Idled perfectly, but would have a dead miss on one cylinder whenever under load (in gear, any throttle above about...
Forum: Tech / General Engine
03-02-2018, 09:06 AM
Replies: 12
Views: 4,727
Posted By 86LG4Bird

Re: 1/2 or 3/4 turn pre load on new rocker arms?

Either is ok.
The +/- 1/4 turn is far less variability than how well you're able to find the true zero lash.
With factory style lifters, it typically takes over 2 full turns to bottom out the...
Forum: Exhaust
03-02-2018, 05:44 AM
Replies: 71
Views: 13,962
Posted By 86LG4Bird

Re: How restrictive are L98 manifolds?

I'd dance with that girl :D
Forum: Tech / General Engine
03-01-2018, 07:24 AM
Replies: 56
Views: 1,842
Posted By 86LG4Bird

Re: 5.7 cam selection

It's probably not so much the mass of the roller lifter as it is the more aggressive valve motion that the roller lifter permits over that of a flat tappet lifter.
Forum: Tech / General Engine
02-26-2018, 06:46 AM
Replies: 12
Views: 520
Posted By 86LG4Bird

Re: Any Advice on what i should do to get into the 12s?

The one glaring item.....stock torque converter.

Replace that with a 3000 min stall 9.5" or 10" TC, and AT THE SAME TIME, mount sticky tires and LCA RB's, replace LCA bushings, and front torque...
Forum: Exhaust
02-21-2018, 01:14 PM
Replies: 71
Views: 13,962
Posted By 86LG4Bird

Re: How restrictive are L98 manifolds?

yeah, that truck is a contender for the easiest, when it had stock manifolds.

We're arguing here about what's easiest: drinking a beer or a glass of water. both pretty damn easy! ;)
Forum: Exhaust
02-21-2018, 12:55 PM
Replies: 71
Views: 13,962
Posted By 86LG4Bird

Re: How restrictive are L98 manifolds?

yes, of about 50 vehicles, I cannot for the life of me remember it being easier on any of them than it is with stock TPI manifolds on the 3rd Gen.
Forum: Exhaust
02-21-2018, 12:50 PM
Replies: 71
Views: 13,962
Posted By 86LG4Bird

Re: How restrictive are L98 manifolds?

OK. thought we were talking about 3rd Gens here.

Personally I consider changing plugs on a 3rd Gen with TPI manifolds about as difficult as falling out of bed. I wish all my vehicles were so...
Forum: Exhaust
02-21-2018, 12:47 PM
Replies: 71
Views: 13,962
Posted By 86LG4Bird

Re: How restrictive are L98 manifolds?

Well damn,...my bad!
Just the way I interpreted your statement: "I don’t think you could get too much worse than changing plugs with the factory manifolds."
So sorry I've upset you.
Forum: Exhaust
02-21-2018, 06:53 AM
Replies: 71
Views: 13,962
Posted By 86LG4Bird

Re: How restrictive are L98 manifolds?

You can't be serious ??
I can't imagine an easier plug change than with stock manifolds. I've never seen ANY header on any of the 50-odd vehicles I've changed plugs in being any easier!
It...
Forum: Tech / General Engine
02-20-2018, 07:51 AM
Replies: 56
Views: 1,842
Posted By 86LG4Bird

Re: 5.7 cam selection

oh yeah....gas mileage!
Forgot to mention, with the E4ME factory carb, I've squeaked out 26 mpg with the ZZ4 cam.
Forum: Tech / General Engine
02-20-2018, 07:46 AM
Replies: 56
Views: 1,842
Posted By 86LG4Bird

Re: 5.7 cam selection

For seat of the pants, good low/midrange power output, hard to beat those two options Orr99 suggested. I run the same ZZ3/ZZ4 cam (see sig).
The LT4 Hotcam will give you a more rumpity idle, but...
Forum: Exhaust
02-20-2018, 06:21 AM
Replies: 71
Views: 13,962
Posted By 86LG4Bird

Re: How restrictive are L98 manifolds?

absolutely
Forum: Transmissions and Drivetrain
02-19-2018, 07:04 AM
Replies: 19
Views: 1,910
Posted By 86LG4Bird

Re: Grinding During Engine Braking

Hold on, guys.
Throwout bearing typically makes the noise with clutch pushed in.
I'm going with Bob's original statement: pinion bearing.
Symptons are classic.
Forum: Tech / General Engine
02-19-2018, 06:59 AM
Replies: 56
Views: 1,842
Posted By 86LG4Bird

Re: 5.7 cam selection

All good options/comments above except that last one. With the mild cams suggested, you can have all three ;) All it takes is some attention to tuning.
The biggest factor in your cam choice that...
Forum: Exhaust
02-19-2018, 06:46 AM
Replies: 71
Views: 13,962
Posted By 86LG4Bird

Re: How restrictive are L98 manifolds?

TPI (L98/LB9) manifolds are definitely not terrible on these cars.
See my sig for results with factory TPI exhaust, except cat delete and Magnaflow muffler.
Forum: Suspension and Chassis
02-06-2018, 06:26 AM
Replies: 6
Views: 1,349
Posted By 86LG4Bird

Re: No Power Steering at Low Speed Turn

Inspect your belt for fluid. Clean it with brakecleen.
Forum: Transmissions and Drivetrain
02-06-2018, 06:24 AM
Replies: 9
Views: 3,513
Posted By 86LG4Bird

Re: Opinions on 3.42 or 3.73 on 383 Tpi

Even for a modest 350 CID in a 3rd Gen, I prefer 3.42 for the street. For a torquey 383, even more so.
Forum: Cooling
02-02-2018, 11:26 AM
Replies: 9
Views: 678
Posted By 86LG4Bird

Re: Overheating when not on bi level ?

I'd venture a guess that the temperature sensor that kicks on the cooling fan is defective.
Probably selecting either of the air conditioning modes (max, normal, or bi-level) will keep the fan...
Forum: Transmissions and Drivetrain
01-29-2018, 07:59 AM
Replies: 6
Views: 570
Posted By 86LG4Bird

Re: trans shift slow around corners!!

Sorry, I made the assumption that you had a 4L60E from a Gen1/Gen2 passenger car application.
I don't know what type of pan the 2011 uses, or if there is even an option for a deeper pan. 4L60E's in...
Forum: Transmissions and Drivetrain
01-29-2018, 06:01 AM
Replies: 6
Views: 570
Posted By 86LG4Bird

Re: trans shift slow around corners!!

For a 4L60E with a standard capacity (car) pan, that's a common behavior. The fix is to run the deeper truck pan WITH the extended neck filter for the deep pan. Get a pan and filter for a 1998...
Forum: Tech / General Engine
01-24-2018, 01:49 PM
Replies: 7
Views: 676
Posted By 86LG4Bird

Re: big bore 383 400 block

^^THIS^^
Forum: Tech / General Engine
01-02-2018, 01:10 PM
Replies: 8
Views: 9,507
Posted By 86LG4Bird

Re: Exhaust manifold bolts coming loose

What kind of manifold gaskets are you using?
I use the OEM embossed steel shim gaskets and have never had one problem with manifold bolts coming loose ....multiple vehicles .... never.
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