Third Generation F-Body Message Boards

 
Page 1 of 9
1
2
3
4
5
Last »
Search: Posts Made By: Mark 89Formula
Showing results 1 to 50 of 409
Search took 0.38 seconds.
Forum: History / Originality
10-01-2008, 08:55 PM
Replies: 16
Views: 4,338
Posted By Mark 89Formula

Re: First 1991 1LE Built, Firehawk Converted- Need Articles!

Is it possible that the magazine article folks are remembering are actually for SLP's Firehawk prototypes? There were a number of articles on those cars.

June 91 Car&Driver, pgs 155-162, Aug 91...
Forum: Engine/Drivetrain/Suspension Parts for Sale
02-22-2008, 02:42 PM
Replies: 3
Views: 548
Posted By Mark 89Formula

Re: FS: Accel High Flow Manifold

The manifold has been sold.
Forum: Engine/Drivetrain/Suspension Parts for Sale
02-21-2008, 12:44 PM
Replies: 3
Views: 548
Posted By Mark 89Formula

FS: Accel High Flow Manifold

Selling my Accel High Flow Manifold, pn 74197. All ports have been cleaned up with sanding rolls and cross buffs. Drilled to accept the plastic push pins in the runner gaskets. Exit ports are...
Forum: Organized Drag Racing and Autocross
02-21-2008, 12:22 PM
Replies: 29
Views: 1,128
Posted By Mark 89Formula

Re: GTA 305 TPI stock times

The y pipe merge in the N10 (dual cat) exhaust isn't the best design from an all-out performance standpoint. The pipe from the RH cylinder bank protrudes into the LH pipe where it's welded together,...
Forum: TPI
01-24-2008, 12:48 PM
Replies: 19
Views: 979
Posted By Mark 89Formula

Re: Cam is going in, base is coming off, Siamese or no?

MPH should be up with the siamesed base. I think your ET gains or losses will be dependent on shift recovery. The higher you spin the engine before shifting and the higher your RPMs are after...
Forum: TPI
01-15-2008, 01:09 PM
Replies: 8
Views: 20,217
Posted By Mark 89Formula

Re: Bolt Torque Specs Edelbrock High-Flo Intake to Aluminum Heads

Which intakes gaskets are you looking for: intake to head or runner to intake? Felpro 1256, 1204, 1205, and 1206 are common numbers for the head to intake based on port size and whether you want an...
Forum: History / Originality
12-21-2007, 12:11 PM
Replies: 3
Views: 434
Posted By Mark 89Formula

Re: formula question

Nope, no Formulas ever came with a digital dash from the factory. Someone swapped one in if its got one.
Forum: TPI
12-07-2007, 12:51 PM
Replies: 11
Views: 1,039
Posted By Mark 89Formula

Re: Intake Base Installation Tips

Yep, I've found it at a number of local auto parts stores like O'Reilly and Auto Zone.

Nice writeup and excellent points Damon.
Forum: TPI
12-06-2007, 12:17 PM
Replies: 11
Views: 1,039
Posted By Mark 89Formula

Re: Intake Base Installation Tips

"The Right Stuff" gasket maker from Permatex works great in place of silicone on the china walls. Friends who had leaks with silcone fixed the problem using this product. I've done two intake...
Forum: Organized Drag Racing and Autocross
11-13-2007, 12:38 PM
Replies: 18
Views: 584
Posted By Mark 89Formula

Re: First time on the track

You have the power to run 13.80s, just need to get the launch down like you said. Drag radials will be a good investment since you've already got the converter. You putting out just as much power...
Forum: Tech / General Engine
11-06-2007, 12:53 PM
Replies: 15
Views: 565
Posted By Mark 89Formula

Re: problem running 6* of timing

De-sensitizing or disabling the knock sensor makes sense when you're picking up false knock, say from the valvetrain. In my limited experience the knock sensor does a pretty good job identifying...
Forum: Tech / General Engine
11-05-2007, 12:33 PM
Replies: 15
Views: 565
Posted By Mark 89Formula

Re: problem running 6* of timing

Are you running a non-stock PROM like your sig says? If so, it could be that the timing curve is more aggressive than stock or the knock sensor has been desensitized. If you still have the stock...
Forum: TPI
10-26-2007, 12:56 PM
Replies: 8
Views: 717
Posted By Mark 89Formula

Re: suggestions for modding a stock 89 L98?

Agree 100%. Exhaust is the most effective mod you can make on an otherwise stock car. Adding headers and catback increased MPH at the strip from 94 to 98 MPH on my car.
Forum: TPI
10-16-2007, 12:46 PM
Replies: 2
Views: 1,763
Posted By Mark 89Formula

Re: which cam 2031 or 2032

If you're talking the Crane 2031 and 2032, the difference is that the 2032 duration is 6 degs greater on both the intake and exhaust and the lift is marginally higher. The 2032 would be the better...
Forum: Organized Drag Racing and Autocross
09-28-2007, 12:47 PM
Replies: 3
Views: 381
Posted By Mark 89Formula

Re: What would you guess it to run?

High 11s at sea level if you 1) raise compression to 10.5:1 or more, 2) put on 52 or 58 mm TB, and 3) nail the tuning and driving. Static compression of 9:1 with that cam is a big mismatch naturally...
Forum: Organized Drag Racing and Autocross
09-20-2007, 09:04 AM
Replies: 6
Views: 4,083
Posted By Mark 89Formula

Re: Burnouts with Nitto 555 DRs....

I've made 40 runs on these tires and estimate about 5-7K street miles. They're evenly worn across the width of the tread and I'm not to the wear bars yet, but close. I wouldn't want to drive on...
Forum: Organized Drag Racing and Autocross
09-19-2007, 12:50 PM
Replies: 6
Views: 4,083
Posted By Mark 89Formula

Re: Burnouts with Nitto 555 DRs....

Mine require a good burnout to really stick. I run up through the gears then back out of the throttle and roll up to the line once they're up to temperature. You can feel and hear this when the...
Forum: TPI
09-14-2007, 01:06 PM
Replies: 4
Views: 721
Posted By Mark 89Formula

Re: ported upper plenum

Not familiar with a dotco tool but if it's like a Dremel it'll work. Sanding rolls are good for enlarging the diameter of the runner opening and you can use cut-off wheels to remove the divider...
Forum: TPI
08-30-2007, 12:45 PM
Replies: 14
Views: 1,433
Posted By Mark 89Formula

Re: Help - Getting 5* of knock retard after SuperRam intake manifold install on a 92

The exit ports in the Super Ram lower intake are larger than the intake ports on the stock heads. This step decrease in area really hurts flow. I wouldn't be surprised if the overall flow potential...
Forum: History / Originality
08-21-2007, 08:51 PM
Replies: 14
Views: 784
Posted By Mark 89Formula

Re: My Factory Non A/C Formula

Actually A/C was standard on all 89 Firebirds with a V-8 (TBI & TPI) that wasn't a 1LE car. Don't know about 90-92.
Forum: History / Originality
07-23-2007, 12:40 PM
Replies: 13
Views: 4,280
Posted By Mark 89Formula

Re: Do I have a real G92 Formula

Sounds like a Formula 350 that's either been repainted or had the door decals removed. The 89 Formula 350s have the "Formula 350" door decals but nothing on the hood scoop while 89 305 Formulas had...
Forum: TPI
07-17-2007, 12:38 PM
Replies: 20
Views: 2,229
Posted By Mark 89Formula

Re: 13's with bolt-on LB9..... possible?

Tim Burgess has gone high 12s with his 92 Z28 with G92 on the original 305 short block, ported stock heads, cam, complete intake, tires, weight reduction, and about every bolt-on you can imagine. ...
Forum: Aftermarket Vendor Review
06-08-2007, 01:05 PM
Replies: 5
Views: 756
Posted By Mark 89Formula

Re: Pro Built Automatics question

I talked to Dana on the phone when I ordered my tranny and Vigilante and gave him the all the vehicle specs including HP and TQ values from a Dynojet run. He supplied this to Precision Industries...
Forum: TPI
05-04-2007, 12:27 PM
Replies: 19
Views: 1,807
Posted By Mark 89Formula

Re: Trying to Choose Between 2 Cams....Help!

Yep.
Forum: Organized Drag Racing and Autocross
03-05-2007, 12:34 PM
Replies: 13
Views: 592
Posted By Mark 89Formula

That's a good ET and 60' time for your mods. I...

That's a good ET and 60' time for your mods. I ran anywhere from 13.98-14.11 in the 1/4 with an 1/8 time in the 8.9s. 9.4 for a 97 Trans Am is not so hot.
Forum: TPI
03-01-2007, 04:45 PM
Replies: 7
Views: 453
Posted By Mark 89Formula

I think you'll be a lot happier with the 2400 RPM...

I think you'll be a lot happier with the 2400 RPM versus 3000 RPM with a stock L98. Change the heads, cam, and intake and the 3000 RPM becomes the better choice.
Forum: TPI
03-01-2007, 12:51 PM
Replies: 7
Views: 453
Posted By Mark 89Formula

202/206 degs @ .050 for the stock 87 L98 cam. ...

202/206 degs @ .050 for the stock 87 L98 cam. That's a lot of stall for a stock L98.
Forum: Tech / General Engine
02-28-2007, 12:47 PM
Replies: 8
Views: 807
Posted By Mark 89Formula

If you're keeping the stock serpentine belt...

If you're keeping the stock serpentine belt system I think you'll need the delete pulley so that the belt tensioner works properly. Run a different belt system and you may be able to delete it...
Forum: Tech / General Engine
02-26-2007, 05:06 PM
Replies: 12
Views: 7,858
Posted By Mark 89Formula

More than 25 HP at peak if I had to guess.

More than 25 HP at peak if I had to guess.
Forum: TPI
02-26-2007, 12:32 PM
Replies: 10
Views: 683
Posted By Mark 89Formula

Take a look at the dyno graphs in this article to...

Take a look at the dyno graphs in this article to get an idea how the different runners compare. I went with AS&M myself. The Edelbrocks will be great if you extrude hone them but out of the box...
Forum: Tech / General Engine
02-26-2007, 12:27 PM
Replies: 12
Views: 7,858
Posted By Mark 89Formula

The 355 HP rating was likely based on a dyno...

The 355 HP rating was likely based on a dyno configuration with open exhaust or headers and a minimum of accessories. The 230 HP rating for the L98 includes your accessories and production exhaust...
Forum: TPI
02-25-2007, 09:13 PM
Replies: 10
Views: 683
Posted By Mark 89Formula

Yes, you'll benefit from the runners with your...

Yes, you'll benefit from the runners with your heads and cam. Look favorably at the AS&M/TPIS ones over the Edelbrocks.
Forum: TPI
02-19-2007, 12:50 PM
Replies: 78
Views: 29,814
Posted By Mark 89Formula

Thanks. One of the coolest posts I've seen in a...

Thanks. One of the coolest posts I've seen in a long time. Would there be any benefit to building up the floor ever so slightly at the exit port of Jerry's manifold to further improve the exit...
Forum: TPI
02-05-2007, 07:55 PM
Replies: 5
Views: 7,279
Posted By Mark 89Formula

You've got all the latest parts so it's a pretty...

You've got all the latest parts so it's a pretty safe bet that you're not going to find someone who has your exact combo. Even if they did the weight of your car, gearing, tranny choice, condition...
Forum: TPI
02-02-2007, 12:48 PM
Replies: 22
Views: 3,614
Posted By Mark 89Formula

.

.
Forum: TPI
02-02-2007, 12:41 PM
Replies: 22
Views: 3,614
Posted By Mark 89Formula

.

.
Forum: TPI
02-02-2007, 12:38 PM
Replies: 22
Views: 3,614
Posted By Mark 89Formula

Keep your 1.5 rockers and go with a Crane 2032 or...

Keep your 1.5 rockers and go with a Crane 2032 or a Accel/Lingenfelter 74216 grind. Both of these cams have lift under .475" with 1.5 rockers and work nicely with the stock heads. If you run 1.6...
Forum: TPI
01-28-2007, 08:22 PM
Replies: 6
Views: 4,480
Posted By Mark 89Formula

Here's a few choices with part numbers from...

Here's a few choices with part numbers from Summit. Be sure to go with a narrow body, self aligning rocker if you're retaining your stock heads and pushrods.

Crane Gold Race rockers CRN-10758-16...
Forum: Organized Drag Racing and Autocross
01-15-2007, 02:41 PM
Replies: 28
Views: 1,048
Posted By Mark 89Formula

Mar GMHTP - Kudos to GTA matt & TPI-Formula350-

Got the March issue of GMHTP in the mail, the one with the results of the budget bolt-on shootout held last summer. Recall that you had to be running a stock longblock to compete. GTA matt and...
Forum: Tech / General Engine
01-15-2007, 01:11 PM
Replies: 20
Views: 16,146
Posted By Mark 89Formula

This is a really encouraging start. The short...

This is a really encouraging start. The short seat duration and 113 deg LSA are helping out driveability and vacuum. Here's hoping the fast ramps and mega lift get you the dyno reading you're...
Forum: Tech / General Engine
12-18-2006, 12:17 PM
Replies: 4
Views: 2,868
Posted By Mark 89Formula

Recommend 114 deg LSA since you're getting a mail...

Recommend 114 deg LSA since you're getting a mail order tune. If you're willing to burn your own chips I'd select the one that best complements the heads and exhaust. The better the flow of your...
Forum: Organized Drag Racing and Autocross
10-26-2006, 01:09 PM
Replies: 20
Views: 740
Posted By Mark 89Formula

Didn't happen. Timing equipment messed up. ...

Didn't happen. Timing equipment messed up. Neither the ET or 60' time are credible for the car modded the way you've described it.
Forum: TPI
10-13-2006, 12:54 PM
Replies: 12
Views: 705
Posted By Mark 89Formula

Agree. Definitely possible with a converter,...

Agree. Definitely possible with a converter, some sticky tires, and good driving. PROM work would be helpful too. You can do all this within your budget.
Forum: Tech / General Engine
10-13-2006, 12:48 PM
Replies: 1
Views: 615
Posted By Mark 89Formula

Iron heads in stock form can only handle lift up...

Iron heads in stock form can only handle lift up to about .470" before you have interference between the valve guides and valve spring retainers. You can address this if you have the heads reworked...
Forum: Tech / General Engine
10-13-2006, 12:33 PM
Replies: 7
Views: 1,617
Posted By Mark 89Formula

ZZ9 is really small for this application. It...

ZZ9 is really small for this application. It will be very streetable but if you're looking for max performance you can really step up the cam size.
Forum: Tech / General Engine
10-12-2006, 12:53 PM
Replies: 7
Views: 1,617
Posted By Mark 89Formula

Peak torque around 3500 RPM and peak power...

Peak torque around 3500 RPM and peak power between 5000-5500 RPM if your intake can support it. You'll want to try shift points between 5000-5500 RPM is you're running a long tube runner TPI. You...
Forum: TPI
09-27-2006, 05:12 PM
Replies: 6
Views: 518
Posted By Mark 89Formula

It's a great cam for your engine setup and gears....

It's a great cam for your engine setup and gears. SPDC got around 300 HP at the flywheel with the stock cam using the Vortec heads, stock runners, and their baseplate. You should 15-20 HP or more...
Forum: TPI
09-27-2006, 01:13 PM
Replies: 5
Views: 361
Posted By Mark 89Formula

Yes, the Vortec base does flow better than the...

Yes, the Vortec base does flow better than the stock base. There's still room for improvement, just like everything else. Since you already have a nice set of heads, I'd spring for the matching...
Forum: TPI
09-25-2006, 12:50 PM
Replies: 7
Views: 1,154
Posted By Mark 89Formula

Yep.

Yep.
Forum: Interior Parts Wanted
09-13-2006, 09:55 PM
Replies: 2
Views: 405
Posted By Mark 89Formula

140 MPH cluster for 85-92 Firebird

Looking for a cluster with the 140 MPH speedo for an 85-92 Firebird. Main requirement is that the speedo and odometer are functional. A good lense is a nice to have but not a requirement. Thanks.
Showing results 1 to 50 of 409
 
Page 1 of 9
1
2
3
4
5
Last »


 
Forum Jump


All times are GMT -5. The time now is 04:37 PM.