Hey guys... Could you decipher these #s?

3998991 - heads

346250
GM k3 - spreadbore non egr intake

thanks all

Acorrding to C-B-T-N:

3998991 Heads: 1972, 1.72/1.50, 74.56cc
Pass.: 350, 165hp(low compression)
Nova: 307, 130hp
Chevelle: 307, 130hp
Camaro: 307, 130hp

346250 Intake: you got me

The # 250 intake is a cast ' 76-82 4 bbl. intake.

Well for some reason i dont feel like getting those heads now http://www.nastyz28.com/ubb/smile.gif
thanks guys