I've recently been given a copy of "cartest", a simple computer performance simulation package.. it's quite old so some may have seen/used it before. I only see it as a bit of fun, but the results are reasonably accurate, if somewhat optimistic! & it does give you an option to easily compare different changes & the effects they have on performance....
Basically, you punch in the cars's weight, power, gearing, drag co & a few other items & you can then 'simulate' the cars performance.
For fun, I've typed in the details for my stock GTD. I've estimated the power at 225bhp @ 5750 & 200 lb/ft @ 4000, a co of 0.35, weight 2600 lbs & got the following results;
0-60 in 6.2 secs
0-100 in 15.3 secs
standing quarter 14.5 @ 97.2mph
top speed 146mph
Lowering the gearing (radically) by trying a 5:1 diff gives virtually no increase in performance!
however, If I take 600lbs off the weight, the performance is well up, even with the same engine;
0-60 in 5.2 secs
0-100 in 12.4 secs
standing quarter 13.5 @ 104.7mph
top speed 147mph
Using the stock weight (2600 lbs) but adding 100bhp & 100lb/ft (325 bhp & 300lb/ft) gives a stonking improvement;
0-60 in 4.7 secs
0-100 in 10.3 secs
standing quarter 12.7 @ 113.5mph
top speed 149mph
an interesting comparison! anyone got any 'actual' figures I can use to test the programs accuracy?
Basically, you punch in the cars's weight, power, gearing, drag co & a few other items & you can then 'simulate' the cars performance.
For fun, I've typed in the details for my stock GTD. I've estimated the power at 225bhp @ 5750 & 200 lb/ft @ 4000, a co of 0.35, weight 2600 lbs & got the following results;
0-60 in 6.2 secs
0-100 in 15.3 secs
standing quarter 14.5 @ 97.2mph
top speed 146mph
Lowering the gearing (radically) by trying a 5:1 diff gives virtually no increase in performance!
however, If I take 600lbs off the weight, the performance is well up, even with the same engine;
0-60 in 5.2 secs
0-100 in 12.4 secs
standing quarter 13.5 @ 104.7mph
top speed 147mph
Using the stock weight (2600 lbs) but adding 100bhp & 100lb/ft (325 bhp & 300lb/ft) gives a stonking improvement;
0-60 in 4.7 secs
0-100 in 10.3 secs
standing quarter 12.7 @ 113.5mph
top speed 149mph
an interesting comparison! anyone got any 'actual' figures I can use to test the programs accuracy?