help something is slipping
 

ok heres my problem when i drive my car 87 gt 5spd with some bolt ons and i drive like granny it drives fine but if i gun it it just doesn't go the rpms go up and it feels like something in the rear is slipping it doesn't feel like the clutch could it be my axles going any help would be great

one of your tires would have to spin..even if the clutches in your rear were shot..those just make both wheels spin..only other thinkg is clutch..do the uphill test..go up hill and put in in one or two gears higher that you are soposed to be in and gun it..you wont go anywhere and niether should your tach..if it does then your clutch is toast..BTW learn english..it helps