4.8L 80mm Single Dirty Grandpa Truck Build
#21
TECH Apprentice
Thread Starter
Join Date: Jan 2005
Location: St Petersburg, FL
Posts: 357
Likes: 0
Received 0 Likes
on
0 Posts
It's all a guessing game at this point. I'll log pressures when I fire it up and provide the results.
Thanks for all the compliments. Glad you guys like the build. I'm pretty excited. First time I've built something nice for myself in a long time.
Thanks for all the compliments. Glad you guys like the build. I'm pretty excited. First time I've built something nice for myself in a long time.
#25
TECH Apprentice
Thread Starter
Join Date: Jan 2005
Location: St Petersburg, FL
Posts: 357
Likes: 0
Received 0 Likes
on
0 Posts
I'm anticipating lower back pressure. Lower back pressure requires a lot of gate and good placement. I need to avoid creep if I'm only running 7psi.
Low pressure doesn't translate to slow spool. If it flows well you'll see roughly the same spool.
My goal is to be under 1:1 so I can run a cam with a decent amount if overlap. I had a supra way under 1:1 a few years back. Added 6 degrees in from cam timing. Picked up 100whp. It's apples to oranges, but that's cheap power if you plan a little.
Low pressure doesn't translate to slow spool. If it flows well you'll see roughly the same spool.
My goal is to be under 1:1 so I can run a cam with a decent amount if overlap. I had a supra way under 1:1 a few years back. Added 6 degrees in from cam timing. Picked up 100whp. It's apples to oranges, but that's cheap power if you plan a little.
#26
TECH Apprentice
Thread Starter
Join Date: Jan 2005
Location: St Petersburg, FL
Posts: 357
Likes: 0
Received 0 Likes
on
0 Posts
#28
TECH Apprentice
Thread Starter
Join Date: Jan 2005
Location: St Petersburg, FL
Posts: 357
Likes: 0
Received 0 Likes
on
0 Posts
#30
Mod with training wheels
iTrader: (16)
It was a T6 96mm 1.32, the big box stock one. With the quick spool AR was effectively reduced to .66 until around 7psi when the quick spool opened. Still a lot of mass for that little 4.8 to turn, though. Made a lot of power though, so you'll be in for some fun once it gets moving.