Okay guys....I am running 1.88 60' marks, yet only hitting 14.1 @ 96 MPH......

And I have all old bsuhsings, springs, shocks, and struts. Theya re all older than 5 years.....

My 60' times would suggest a better quarter mile time...

I guess it is about time for the mini-ram and 1 3/4" headers.

What do you all think?

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Sportsman II 72 CC heads, Edelbrock 1 5/8" headers and Edelbrock cat back exhaust, hi-flow cats, Trans-go shift kit, SLP cold air induction, SLP roller camshaft, 24lb ADS injectors, AFPR, 3.45 rear end gears, and other goodies...

[This message has been edited by raven350 (edited September 14, 2000).]

 

WOW! That is a great 60' time but I feel your pain with the 1/4 time.
I don't think you want to go with the mini ram or larger headers yet.
I have a 350 with edelbrock 6085 heads, same headers as you, ZZ9 cam, Trans-go shift kit and a dual exhaust and 2.77 gears and I'm running 14.01 @ 97.0mph.
The thing, besides gears, that is holding me up is my stock intake! I think this is your problem also. Do you still have the stock intake manifold?
In addition have you ported your plenum?
Just my .02.
Good luck!




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89 IROC 350 Auto
TRUE DUAL Exhaust
Edelbrock Performer Aluminum Heads
ZZ9 Cam
TPIS Level 5 Chip
14.01 @ 97.0mph with 2.77's gears

 

I have done mild port work to the intake, nothing to radical.

I do not believe the stock intake will handle my combination.

Right now the intake cuts out at 4500 and with the gears and torque convertor coming in at 2800 or so.. it makes a difference...

Most of my parts are made from 2500-6000. And the intake I feel that I need for that combination is the miniram.

If you think different, let me know.

[This message has been edited by raven350 (edited September 17, 2000).]

 

The mini ram and a set of 3.73s would open it right up. I tried to stay TPI this spring when I rebuilt the motor. With the ZZ-9, and ported heads, all the porting in the world on the intake wouldn't have helped. The car was pulling like a bear below 4500, but once the rpm's came up, the car fell down. The best times I could turn were 13.80s. I wanted it, but, the mini ram is a little out of my price range, so I converted to carb. With the Holley 750, and the Torker II intake, I'm pulling hard, right up to 6200. As for the headers, I'd stay with the 1 5/8s. I've seen a few TPI F-bodies slow down after 1 3/4 headers were put on. You need a little backpressure. I run Heddman full length 1 5/8s in mine, and have had no problems. I don't plan on the bigger ones until I'm in the mid to low 12s.

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91 Firebird Formula. Converted to carb. Holley 750. Forged Flat top pistons. 10.5 to 1 compression. ZZ-9 Cam. Ported L98 Heads.
150 shot NOS, 700r4 w/ 3000 rpm converter and 3.73s in the back. Headers w/ full dual exhaust. 27.5 inch McCrearys. (free slicks)
12.98 @ 106 Natural,
11.83 @ 113 NOS.

 

I ran my best times with 1 5/8" headers. My engine wasn't set up for 1 3/4". They would have slowed me down also. Headers are like carbs and gears. Larger isn't always better.

At 96 mph your HP is low when compared to the 60". ET is from traction. With 1.88 60" times I wouldn't worry about your suspension yet. Those are much better times than most. They could be improved but you have some sort of power loss to keep you that slow. Do changes and watch the mph. That will tell you if the changes helped or not.

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Stephen's racing page

87 IROC-Z Pro ET Bracket Race Car and knocking on the SuperPro ET class
383 stroker (carbed) with double hump cast iron heads and pump gas

Best results before the engine blew up
Best ET on a time slip: 11.857
Best corrected ET: 11.163
Best MPH on a time slip: 117.87
Best corrected MPH: 126.10
Best 60 foot: 1.662

Racing at 3500 feet elevation but most race days it's over 5000 feet density altitude!

Member of the Calgary Drag Racing Association

 

Thanks for all of your comments guys...

I am thinking about also fabricating an intake too....

I have ideas in my head, I just need to start building it in AutoCAD... And try them out...