The potential of basic GM production parts is the subject of this test. Theres allway a lot of controversey on dyno numbers, but this is a basic build I would like to share with this forum. 4.280 X 3.998 460 cu in, GM 959 454 block, Scat 9000 crank, GM truck rods, Mahle pistons 10.5 compression, Isky 560 lift 254 @ .050 108 installed 103, Ported 049 GM oval port heads, Ferrea valves, Smith bros pushrods, Scorpion rockers 1.7 ratio, RPM air gap intake, 850 holley (4781) 35 degrees total timing 91 octane pump gas, moroso 20403 oil pan, 5.5 quarts of Gibbs XP4 oil. This combination would easily push a full weight Chevelle well into the 10 sec range.
Putting it to the test
1 reading
VORTECPRO
101 - 107 of 107 Posts
Joined
·
1,013 Posts
The conditions on this run were: 2500 feet DA, 14 MPH strait on head wind, running weight was 3720, foot brake with no two step. Notice the low MPH, this was due to the head wind, 6.61 x 1.57 = 10.37. Corrected 10 teens. 620 HP 460.mph too!
Joined
·
1,013 Posts
i see what youre saying, the mph should be around 102-103 or close to that.... maybe higher
Joined
·
310 Posts
Isn't Kearney a 1/4 mile track? How come you didn't run the car out the full 1320? I see the time slip had a time at 1000 feet, looked like a 9 something, but you blocked the rest of the slip off. What gives?
The wind was real bad, theres more left in that combination, but its time to move on to another engine combination, my good trans was broke, I will have it in there next time. It would be nice to take that 620 HP combination down to Houston this fall.
Joined
·
310 Posts
How about taking that car with ANY combination to the track in Pueblo. I know it doesn't have the great air like Houston in the fall, but it's only 36 MILES away! Come on Mark, let the local boys see that cool car make a pass.
101 - 107 of 107 Posts
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
