UNC Charlotte SBC Engine Master's Motor
01-08-2018, 02:18 PM
#1
Melting Slicks
Thread Starter
UNC Charlotte SBC Engine Master's Motor
I can't help but laugh at the torquey beast that was UNC Charlotte's entry to the 2016 Engine Master's Comp:
403ci SBC, Dart heads (2.08/1.6), Accel Super Ram intake, 10.5:1CR (all seems normalish so far), then a Crane roller with 242 deg @ 0.050" and 1.75 ratio roller rockers to put valve lift at .730"/.730" <--
563 ft lbs @ 4,700 and 558 HP at only 5,600 rpm out of the Accel Super Ram.
>=419 ft lbs from 2,500 rpm all the way to 6,500! I love these torquey beasts; that poor, poor valve train though.
http://www.hotrod.com/articles/1302p...ers-challenge/ Just search for "UNC"
Adam
403ci SBC, Dart heads (2.08/1.6), Accel Super Ram intake, 10.5:1CR (all seems normalish so far), then a Crane roller with 242 deg @ 0.050" and 1.75 ratio roller rockers to put valve lift at .730"/.730" <--
563 ft lbs @ 4,700 and 558 HP at only 5,600 rpm out of the Accel Super Ram.
>=419 ft lbs from 2,500 rpm all the way to 6,500! I love these torquey beasts; that poor, poor valve train though.
http://www.hotrod.com/articles/1302p...ers-challenge/ Just search for "UNC"
Adam
01-08-2018, 05:43 PM
#2
Team Owner
those big numbers don't really mean anything I was involved in an engine Masters engine years ago and the each year they come out with a list of rules.
Most of the entered motors don't even last through the repeated dyno sessions. Everything inside the motor is as lightened as possible
Kind of like racing motors only made to last the length of the race
I run. 685 .714 lift I replace my springs every year and they are about $500 a set
Most of the entered motors don't even last through the repeated dyno sessions. Everything inside the motor is as lightened as possible
Kind of like racing motors only made to last the length of the race
I run. 685 .714 lift I replace my springs every year and they are about $500 a set
01-08-2018, 05:47 PM
#3
Melting Slicks
Thread Starter
those big numbers don't really mean anything I was involved in an engine Masters engine years ago and the each year they come out with a list of rules.
Most of the entered motors don't even last through the repeated dyno sessions. Everything inside the motor is as lightened as possible
Kind of like racing motors only made to last the length of the race
I run. 685 .714 lift I replace my springs every year and they are about $500 a set
Most of the entered motors don't even last through the repeated dyno sessions. Everything inside the motor is as lightened as possible
Kind of like racing motors only made to last the length of the race
I run. 685 .714 lift I replace my springs every year and they are about $500 a set
Yea, I can't imagine that valve train would last at all (the UNC EM entry).
What is the duration @ 0.050" on your cam? I'm guessing bigger than 242... 0.730" with 242 deg @ 0.050" literally makes me laugh- I think I can hear the valve train begging for death from here. -"Just kill me now!..." -I have a weird sense of humor, though.
It's still hilarious to see some 23 Dart Heads and an old Accel "pizza box" and an off-the-shelf Crane cam throw down 563 ft lbs on a 400 ci SBC and 558hp @ 5,600 RPM.
I was just running through the spec sheet and it was like "normal old stuff, normal old stuff, normal old stuff, then I got to the valve lift: What the H#@##!!?!"
-I'm sure owning such an engine wouldn't be anywhere near as amusing, though...
Adam
Last edited by NewbVetteGuy; 01-08-2018 at 05:52 PM.
01-08-2018, 06:58 PM
#4
Team Owner
I have custom cams that I thought up from looking at racing lobes in the comp cams lobe pdf catalog
.050 duration numbers are only part of the story. Numbers at. 200 give even more acurrate description
I have something like 252/256 on a solid roller with an altered 4/7 firing order swap so my 434 sbc sounds like a ford Motor
.050 duration numbers are only part of the story. Numbers at. 200 give even more acurrate description
I have something like 252/256 on a solid roller with an altered 4/7 firing order swap so my 434 sbc sounds like a ford Motor
