Sunday, March 2, 2014

75 Trans am

75 Trans Am LS2/6spd


I was able to "half" tune this car today.  We were stopped by the rain, so there was no chance to go for any runs.  I will be finishing the tune when the weather clears up.  This car is clean! The owner did an amazing job on it, inside and out.  This is a 1975 Trans Am with a 77 front end.
Specs:
ls2 + .030
Cnc'd ls3 heads
Custom cam 600+" lift more specs later
GM performance single plane intake
850 Speed demon carb. Vac secondaries
MSD 6ls with timing curve 3
Longtube headers
Magnaflow mufflers
Big brakes
6 speed
10 bolt, 3.08gears
The Carburetor
850 Speed demon vac secondary



This is my first hands on, with a Demon.  It is a very high quality carburetor, with very good looks. Read more here about this specific model.  This is a good match for this over all combination. Should make for a smooth tuning process.  It has an electric choke,  4 corner idle and will flow more than enough air. The carb is spec'd for 220-240 duration at .050 which this cam is, and has vacum secondaries.  The main tuning points on this carburetor are the idle mixture screws, power valve, main jets and the secondary springs.  The power valve, jets and secondary spring will be tuned next time.  I will include the afr logs.  Until then.....