A question for oppo: the pushrod V8 whistle

"traderQAMobileTestAutomationMobileBoostOn" (el-peasant)
05/09/2015 at 20:28 • Filed to: None

No particular car in this pic

On these following vehicles, during moderate or heavy acceleration:

-1971 Buick Riviera 455/3spd auto

-2007 GMC Yukon 6.2/6spd auto

-2013 Challenger 5.7/5spd auto

There is a faint high-pitched whistling noise that sounds awesome, adds a supercharger-esque tenor to the V8 bass.

Any idea what it is? It only exists in 1st and/or 2nd gear, so probably some transmission noise.

DISCUSSION (23)

jvirgs drives a Subaru > traderQAMobileTestAutomationMobileBoostOn
05/09/2015 at 20:33

Riviera

Boxer_4 > traderQAMobileTestAutomationMobileBoostOn
05/09/2015 at 20:35

Off topic, but those gauges are from a previous generation WRX.

sm70- why not Duesenberg? > traderQAMobileTestAutomationMobileBoostOn
05/09/2015 at 20:35

Belt?

Arch Duke Maxyenko, Shit Talk Extraordinaire > traderQAMobileTestAutomationMobileBoostOn
05/09/2015 at 20:38

The 5.4 in the E-350 is NOT a pushrod V8.

traderQAMobileTestAutomationMobileBoostOn > Arch Duke Maxyenko, Shit Talk Extraordinaire
05/09/2015 at 20:40

Apologies, I just found out it’s a SOHC. I always assumed it’s an OHV because it makes the fast click-click-click noise when accelerating

Sampsonite24-Earth's Least Likeliest Hero > Arch Duke Maxyenko, Shit Talk Extraordinaire
05/09/2015 at 20:40

drive an e350 for work, can confirm, not a pushrod

AM > traderQAMobileTestAutomationMobileBoostOn
05/09/2015 at 20:48

The 2000-2006 generation of the GM 5.3 V8 could produce that whistle at a pretty loud volume. Can’t say what makes it happen but I’ve always loved it.

jkm7680 > traderQAMobileTestAutomationMobileBoostOn
05/09/2015 at 20:50

I’ve heard alternator.

Sweet Trav > traderQAMobileTestAutomationMobileBoostOn
05/09/2015 at 20:52

Probably trans noise, my Monte makes a whine when in decel

Funktheduck > traderQAMobileTestAutomationMobileBoostOn
05/09/2015 at 20:54

Probably transmission noise.

Mustafaluigi > traderQAMobileTestAutomationMobileBoostOn
05/09/2015 at 21:13

Rod knock?

Twinpowermeansoneturbo > Boxer_4
05/09/2015 at 21:21

Came here to say this, not surprised somebody beat me to it.

citizennick > traderQAMobileTestAutomationMobileBoostOn
05/09/2015 at 21:22

My brother, who specializes in LSX performance, said its intake/throttle body related.

deekster_caddy > traderQAMobileTestAutomationMobileBoostOn
05/09/2015 at 21:36

I would assume you are hearing the gears whine a little in first gear. My ‘73 Buick, ‘86 suburban and ‘05 Yukon all had a first gear whine.

BJ > traderQAMobileTestAutomationMobileBoostOn
05/09/2015 at 21:48

Kinja'd!!!

Tuned-Port-Injected-Rage > traderQAMobileTestAutomationMobileBoostOn
05/09/2015 at 22:08

Yeah, my bet would just be transmission noises.

mr2gud2u > traderQAMobileTestAutomationMobileBoostOn
05/09/2015 at 22:10

My 6.1 does the same thing. I always assumed it was the ported intake manny, throttle body combo. None of my other push rod V8s have done it.

4muddyfeet - bare knuckle with an EZ30 > citizennick
05/09/2015 at 22:10

This would be my guess. Sucking in dem airs.

lone_liberal > traderQAMobileTestAutomationMobileBoostOn
05/09/2015 at 22:16

Whistling always makes me think intake noise of some sort or a vacuum leak. After all, the bigger the engine, the more air it has to suck in.

GUYMANDUDE > traderQAMobileTestAutomationMobileBoostOn
05/10/2015 at 02:04

Head gasket

Denver Is Stuck In The 90s > traderQAMobileTestAutomationMobileBoostOn
05/10/2015 at 04:49

My truck does that over 3500rpm in 1st-3rd. I have a 4.0 OHV V6. Its just the engine taking in air very rapidly, normal pushrod stuff

rithsleeper > traderQAMobileTestAutomationMobileBoostOn
05/10/2015 at 09:41

I can only speculate but having a bigger engine means more power. First gear needs stronger gears and straighter cut for strength which make more noise.

Jedidiah > traderQAMobileTestAutomationMobileBoostOn
05/10/2015 at 22:21

It’s likely induction noise. Sucking in lots of air.