Tuned 5.3 compared to 5.7 vortec?
#12
TECH Veteran
iTrader: (8)
Way back in the day I had a 96 xcab 4x4 5.7 vortec shorty headers and a hypertech tune and a CAI plus a catback.Thinking I had a good running otherwise stock truck,one day my buddy showed up driving his brand new demo a bone stock 1999 sierra xcab 4x4 5.3,which they bumped the HP the next year.We took off in a good even launch,trucks side by side and at about 60 he started pulling away,In the quarter he might of had me by 3-4 lenghts.
Not long after that I was on the LS band wagon.
Not long after that I was on the LS band wagon.
#13
TECH Enthusiast
Richard
#15
#16
TECH Veteran
iTrader: (8)
here is a pic of my 06 vortecmax,it was a leather load with the first year of max tow which was 4.10 gear 4L70E and a button to stiffen the shocks,which I wish they still did.I went maggy long tubes and cam and Yank
I recommend find one of these
Last edited by gonzo 6.2; 04-27-2016 at 11:27 PM.
#17
TECH Enthusiast
#18
Moderator
iTrader: (19)
I've towed with both stock trucks and prefer the 5.7. the off idle pulling power is better than the 5.3 IMO....but the 5.3 beats the 5.7 in every other department. it also doesn't take much to put the 5.3 performance over the 5.7 in the off idle pulling power.
those old vortecs had some grunt down low and quickly fell off after that.
those old vortecs had some grunt down low and quickly fell off after that.
#19
I've towed with both stock trucks and prefer the 5.7. the off idle pulling power is better than the 5.3 IMO....but the 5.3 beats the 5.7 in every other department. it also doesn't take much to put the 5.3 performance over the 5.7 in the off idle pulling power.
those old vortecs had some grunt down low and quickly fell off after that.
those old vortecs had some grunt down low and quickly fell off after that.