On3 performance 78/76
I was at the track last Friday night but was battling serious problems so take results with a grain of salt. Turbo starts making boost a lot sooner then the GT45 did, I was able to build 5psi on the foot brake as where the GT45 I was lucky to get 1psi. I ended up letting out an both runs at about the 1000ft'ish mark and ran 11.8 101mph with a 1.9 60ft and 11.7 with a 2.0 60ft don't remember the last mph. I only made two run before I lost oil pressure due to rod bearing. Not the best update, I guess better then nothing though.
This was a 3600lb tank with a 5.3 with 862 heads and a tu1.5 cam runnign 14PSI boost
This was a 3600lb tank with a 5.3 with 862 heads and a tu1.5 cam runnign 14PSI boost
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well an update here for you guys
the billet 76/96 on 14psi made 515whp, just like the 76/65 and the 78/75
so there is no power figures with the 78/75 like we wanted but i did find out that something else is wrong with this setup, going to swap the cam next with a LS2 cam since they are not great but they are not terrible, it will let me know if the cam is the problem or if i have to start going thru the driveline
the billet 76/96 on 14psi made 515whp, just like the 76/65 and the 78/75
so there is no power figures with the 78/75 like we wanted but i did find out that something else is wrong with this setup, going to swap the cam next with a LS2 cam since they are not great but they are not terrible, it will let me know if the cam is the problem or if i have to start going thru the driveline
Thread Starter
TECH Fanatic
iTrader: (36)
Joined: Oct 2005
Posts: 1,135
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From: cedar bluff,alabama
Sucks you've got underlying issues, but looks like the 78/75 maybe a winner after all. Will you be able to test it again after you find the problem? You would think a 216/220 on 114 would be a decent turbo cam?? Thanks for the hard work Denmah.
Last edited by 1969x11; Jul 28, 2014 at 05:10 PM.
feels like its pulling fine, i hit high mph easily, i have had other cars iwth 40% converter loss and you sure can feel it.
also, i pulled the cam out of this truck last night in my spare time after tuning an off road buggy, and it made only 15hp less...
something is crazy wrong here hahah
also, i pulled the cam out of this truck last night in my spare time after tuning an off road buggy, and it made only 15hp less...
something is crazy wrong here hahah
feels like its pulling fine, i hit high mph easily, i have had other cars iwth 40% converter loss and you sure can feel it.
also, i pulled the cam out of this truck last night in my spare time after tuning an off road buggy, and it made only 15hp less...
something is crazy wrong here hahah
also, i pulled the cam out of this truck last night in my spare time after tuning an off road buggy, and it made only 15hp less...
something is crazy wrong here hahah
Teching In
Joined: Mar 2014
Posts: 44
Likes: 0
From: Midland TX
I'm running 230/236 114. When I was going to order my boost friendly cam from Texas speed they suggested 230/236 112. They stated that my can wool work perfectly fine with the setup I have. But would be more better with the 112lsa
