engine set back

What engine set back are most of you using on TA/FC chassis?
Thanks,
Ken

 

i think most are around 65" out.

 

Set Back

Thanks for the reply Darren
My Altered is 65" out and it throws the front end up hard at the line and then carries it on the wheelie bars. Your car looks like it launches good in the video.

 

what's your setup, gear ratios, etc?

 

Setup

It has:
4.56 rear end gear
1.76 Powerglide
33" x 16" Goodyear slicks
500 cubic inch wedge
N/A alcohol injection
125" wheel base 23T Altered
and is wild as hell at the starting line.

 

TA/FC Engine set back

Couple of you guys mention having a 65 inch engine set back . where is this measured from. From centre of diff axle to where (front of block )

 

Price Twins; 65" is mostly std. today. It is rear axle C/L to back of block. Moving ahead or back an inch does almost nothing. Raising or lowering the crank bolt C/L up or down a half inch can make a world of difference. BUT, on todays world of buckets, diapers, oil catch bellypans, there is no more going down.
And 23; not being a smarta--, but your back wheels are not going around !!
Motor placement is NOT your problem. Power or gear IS.

 

wheels

Thanks for your reply Bob, I like your answer more than you know.
Ken

 

F/C Engine placement

Thanks bob, for the advice. Good to hear from you again. I have sent a P/M To you. You threads on this site are very good advice to guys like us.
regards Greg

 

Damn that's why I can't get my trans out!

 

Gear Ratio

I don't wanna wear this one out - but thought I should copy my response on gear ratio from a previous thread.....and it might put your violent starting line problems in perspective - as your overall 1st gear ratio is over 8:1 with the 1.76 X 4.56 ratios:
There are a lot of other variables....but here is my experience....Lencodrive automatic with 1.38 & 1.31 for a 1.80 low in the trans and a 3.89 in the rear - overall 1st gear was a 7.03....worked on most tracks...but was on the edge of getting loose and shaking. I bought new chassis in 2006 with a Top Loader and a 4.29 rear gear - transplanted the drivetrain from old car. Shook hard or spun every lap! The overall 1st gear was now a 7.75....just too much leverage! So we engaged the 2-3 unit and now run as a 1.38 X 4.29 (2 speed) and the overall 1st gear = 5.92...smooth as silk....60 foot is 9.60-1.00 range and we can run it down a dirt road....I know the clutch guys may have totally different ideas on gear ratio...but with a converter keeping the 1st gear ratio under 6:1 seems to be easier to get down most tracks...but we are mostly match racing and don't run national event tracks very often...hope this helps...

 

Will do you think of a torque converter as being an other transmition section?