definitely that's my next step many say it helps but im still to try it once more.. i did it once by my 60 didnt improve.. might of been how i flashed the converter.. i got a buddy with Dr's so may b next time ill give it a try.. really tying to get into the 1.7 60' and 8.3 1/8.. other then that the 5.3 moved good.. IMO

 

I loved my SS4000!! DD was not terrible, it was loose, but it was worth it! Call dave and ask him what he thinks! FWIW my truck picked up mph with the converter, there is a nice test graph on yank's site explaining str and the efficiency up top vs a stock gm converter. Long story short, the ss3600 was more efficient up top even with the high str.

 

wana find the link for me? lol.. and i need to stay away from u guys.. im not working rt now i cant afford shipping cost..lol.. like i said i got a couple months till my 1year is over i might just pull it out and send it to get done into a 4k..

 

how are you launching? foot brake? stall up? if so what rpm?


my truck works best on a 1000-1200rpm launch, never liked the high stall up rpm, it actually 60's worse but then again i am heavier than you and bigger motor but my stock 5.3 didnt like the stall up too much either

 

I ran 8 times on Thursday .. I did 1200/2000/3200 and 3600 and my best 60' was at 2500... it actually didn't change much.. so I launch how ever I don't pay much attention lol..

 

Here is all I can find, there was an article on their old site and it appears that this one is still under construction.....

YANK tests the GXP before and after converter install - LS1TECH

 

all i find are good reviews about hem yanks..haha..

 

Who tunes your truck?

Maybe explore some ways to boost lowend torque in the tune. I think you should be able to do better than high 1.8x's.

 

currently RHINO79.. member on here..

 

Its had more and less timing in the low end, it just will not "launch". I have to believe its just a balance of the weight, converter and gearing. We have tweaked the bottom end tuning last 2 times at the track, probably about 15 passes and 10 reflashes.....lol. His log shows the converter flash to 3600, but it starts climbing like a rocket at 4000. I think his cam vs. vehicle weight needs a lil more punch on the bottom.