[Elarson]

Originally Posted by aaronman

Congratulations on a well designed and executed build. Thanks for taking the time to share it so we can all learn.

Sharing what we learn (both good and bad) is a big deal to us. We all need to get smarter together. Mike and I pay attention to everyone else's builds and have learned from them. It's very much a 2-way street.

Eric

[sdbob]

Thank you for the info. I'm another one who looks. Wonders why someone is doing certain things. I've read reread alot of articles. Have Herb Adam's book on 'Chassis Engineering'. On my 73 F drag car I modified the front spring perches according to Herbs ideas trying to increase anti squat.

[Skip Fix]

Sounds like a nice setup. What gears in the 9"?

[Elarson]

Originally Posted by Skip Fix

Sounds like a nice setup. What gears in the 9"?

3.55. Should be good for about 140 mph at 6500 in 4th

Eric

[Half-Inch Stud]

Seriously with 3.54:1, the OD allows my combo to do 2500 @75, but the standing pull from 65 to 90+ mph is like the pull of a 1/4 mile run, actually the butt and other cognisant cars make it compelling to suggest;

If you got a 455 in a road race, you might want to reach for an OD gear shift.

[Skip Fix]

Originally Posted by Elarson

3.55. Should be good for about 140 mph at 6500 in 4th

Eric

Should be a good combo. Always like cornering , autocross my 78 with road race slicks for quite awhile.

Back when my '78 TA had the stock 180 HP motor TH350 took it to a track day at Texas World Speedway with the Porsche Club. With the 2.56s I could run most of the road course in 2nd, but on the long straight the motor would only pull 4000 and that was all it had-still 130mph And the stock springs at that speed felt like Grandma's Cadillac over bumps! Way soft.

[Tom Vaught]

Originally Posted by Elarson

3.55. Should be good for about 140 mph at 6500 in 4th Eric

Agree! Engine should easily be capable of many 140 MPH / 6500 rpm (4th gear) pulls in a 20 minute session, based on the description of the build.....

Between Skip, Myself, and now you, Eric, there is not much Road Race
experience out there.

Tom V.

[Elarson]

Originally Posted by Tom Vaught

Agree! Engine should easily be capable of many 140 MPH / 6500 rpm (4th gear) pulls in a 20 minute session, based on the description of the build.....

Between Skip, Myself, and now you, Eric, there is not much Road Race
experience out there.

Tom V.

Gordon S. ("HO428" on this board) was a lot of help when I started this project but doesn't seem to post any more.

Eric

[blueghoast]

Originally Posted by Elarson

Gordon S. ("HO428" on this board) was a lot of help when I started this project but doesn't seem to post any more.

Eric

Yea wonder what happen to him, Been a long time since he posted.
Nice build by the way, Should be a lot of fun.

GT

[blueghoast]

Originally Posted by sdbob

Thank you for the info. I'm another one who looks. Wonders why someone is doing certain things. I've read reread alot of articles. Have Herb Adam's book on 'Chassis Engineering'. On my 73 F drag car I modified the front spring perches according to Herbs ideas trying to increase anti squat.

Hey sdbob could you elaborate on the anti-squat I'm not sure of what
it really means and I too am trying to learn all I can.
Didn'tmean to hyjack sorry.

GT

[JLMounce]

Originally Posted by blueghoast

Hey sdbob could you elaborate on the anti-squat I'm not sure of what
it really means and I too am trying to learn all I can.
Didn'tmean to hyjack sorry.

GT

Anti-squat and anti-dive references moment of inertia points on the car transected by suspension pickup points.

Here is a good read on the subject. https://suspensionsecrets.co.uk/anti...lift-geometry/

anti squat would be the tendency for the rear of the car to resist compression. Why you want this in a road race situation is the fact that as the rear squats, while it does add traction at the rear, it unloads the front, reducing traction on your steering tires. this will typically result in a tight exit on power from the apex.

Anti dive does the same thing, but at the front of the car under braking.

[Elarson]

Originally Posted by sdbob

I always wanted to road race always(Herb Adam's ,Chaparrals). Drag was cheaper.
ELarson are you running leaf spring rear suspension? I still have that 74 good TA shell.

Are you pondering a new project? Curious minds want to know......

Eric

[sdbob]

Yes you know the mind thinks I can. Taking that 74 shell and using it for a road race car using Herbs ideas. Problem $$$$ for the needed dry sump(I just think it is insurance but probably not needed),then the best brakes(when i was young didnt think much about them other than they are there), then the engine best parts$$$$. So car body may go down the road. I have the original 74SD TA, the put together 73 SD drag car,a 10k 67 400 4spd ,4.33,RA. Firebird. And my sitting 63 Lemans,(326 3spd long gone) project. 57 olds,400 m40. At 75 I'm seriously thinking selling the shell.

[Tom Vaught]

Herb Adams and Tom Nell did stuff for reasons. PERIOD.

They installed a Cheater oil pan/ Dry Sump Tank/and Camshaft Driven Oil Pump in the engine and F-body.

If you have never had any road race track time on a vehicle ), your money might
be better spent on your other "collection" vehicles. The Vega/Astre body would not be my 1st choice for that adventure.

Tom V.