TPIS MiniRam (383cid) intake vs Holley StealthRam (383cid)
This test compares my 383cid motor with a TPIS
MiniRam intake, with a Holley
StealthRam (HSR)
The current engine is a budget build 383 short block, with my old
top-end. (AFR190 heads, LT4 HOT cam, and SLP 1-3/4" SS
headers). The Vigilante has been reflashed to a 3200 stall after
being rebuilt with a Kevlar 5-disc lockup clutch.
The DynoJet Dyno is located at:
Xotic Motorsports
999 GAP NEWPORT PIKE (RT 41)
Cochranville PA 19330
610.593.1130
http://www.xoticmotorsports.com/
Excuses:
- The 383 MiniRam tuning was very rich for road-racing. 11.8:1 ->
12.2:1 AFRs. The HSR tune was exhibiting an ECM bug that sent the AFR real
rich above 5500rpm. 13.1:1 -> 11.-11.0:1.
- The MiniRam is ported for 1205 sized intake ports, but the AFR190
heads have 1204 sized intake ports. This mismatch results in a
"wall" that the air hits and causes turbulence before entering the head.
|
RPM |
MR HP |
HSR HP |
MR TQ |
HSR TQ |
|
4600 |
284.46 |
|
324.79 |
|
|
4700 |
288.77 |
225.26 |
322.69 |
253.02 |
|
4800 |
294.29 |
295.9 |
322.01 |
323.8 |
|
4900 |
294.11 |
313.08 |
315.24 |
335.59 |
|
5000 |
297.44 |
313.27 |
312.43 |
329.08 |
|
5100 |
307.56 |
314.06 |
316.73 |
323.42 |
|
5200 |
311.1 |
318.42 |
314.21 |
321.61 |
|
5300 |
314.35 |
322.57 |
311.51 |
319.65 |
|
5400 |
319.97 |
325.83 |
311.21 |
316.91 |
|
5500 |
320.08 |
327.36 |
305.66 |
312.61 |
|
5600 |
323.76 |
326.93 |
303.65 |
306.62 |
|
5700 |
324.96 |
325.39 |
299.42 |
299.83 |
|
5800 |
327.16 |
325.18 |
296.26 |
294.46 |
|
5900 |
329.68 |
320.51 |
293.48 |
285.32 |
|
6000 |
327.44 |
320.58 |
286.63 |
280.62 |
|
6100 |
332.5 |
318.93 |
286.29 |
274.6 |
|
6200 |
328.69 |
316.4 |
278.44 |
268.03 |
|
6300 |
325.6 |
311.99 |
271.44 |
260.1 |
|
6400 |
|
297.13 |
|
243.85 |
|
6500 |
|
272.41 |
|
220.11 |
|
6600 |
|
247.23 |
|
196.74 |
|
|
|
|
|
|
|
Average |
314.00 |
306.92 |
304.01 |
288.30 |
|
|
|
|
|
Quarter-Mile data
|
HSR |
|
|
Diff. over MR |
|
MR
|
| Temp |
~50
|
|
|
|
|
~55
|
| Humidity |
|
|
|
|
|
|
| Baro |
|
|
|
|
|
|
| |
|
|
|
|
|
|
| R/T |
|
|
|
|
|
|
| 60' |
1.625 |
|
|
-0.050 |
|
1.675
|
| 330' |
4.790 |
|
|
-0.132 |
|
4.922
|
| 1/8 |
7.459 |
|
|
-0.197 |
|
7.656
|
| Mph |
91.81 |
|
|
-2.23 |
|
89.58
|
| 1000' |
9.774 |
|
|
-0.247 |
|
10.021
|
| 1/4 |
11.733 |
|
|
-0.270 |
|
12.003
|
| Mph |
115.06 |
|
|
-0.81
|
|
114.25
|
*The MiniRam run had a road-racing chip with a 95mph forced TCC lock.
This should have caused the ET to drop and the MPH to increase.* The HSR run
scan showed a very lean tune, (14.0:1) which would give more power, but would
normally be dangerous to run.