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03-19-2013, 09:56 AM
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#1 |
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Registered User
Join Date: Nov 2012
Location: Spartanburg SC
Posts: 87
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What RPM's do you have in Neutral/Park?
I am running a 350 Chevy with double hump heads in my 71 C10. I am running presenty at 920-950 rpm according to my timing light. Does this sound right? I personally like the lower rpm's sound but timing wise, it makes engine hesitate when driving. What RPM's do you have in Neutral/Park?
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03-19-2013, 11:00 AM
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#2 |
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Registered User
Join Date: May 2011
Location: Northern Calif.
Posts: 3,745
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Re: What RPM's do you have in Neutral/Park?
I have both around 800. No real reason, just the way I like it.
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03-19-2013, 11:04 AM
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#3 |
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Senior Member
 
Join Date: Jan 2001
Location: Orem, Utah
Posts: 7,953
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Re: What RPM's do you have in Neutral/Park?
Factory specs say that with the engine warm and the vehicle in drive you should idle at 550-600.
If you have hesitation it's likely carburetion, or you might have a vacuum leak. |
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03-19-2013, 11:37 AM
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#4 |
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Simple? What's simple?
Join Date: Apr 2007
Location: Southeast CT
Posts: 1,472
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Re: What RPM's do you have in Neutral/Park?
Mine used to idle about 575 which it was pretty happy with, but something in my throttle linkage isn't *quite* returning so now I'm idling more like 900 or so
__________________
CURRENT '50 GMC 100 shortbed Gen IV 4.8 LS - 4L65E (Secret truck, Shhh!!!) Build '63 Buick Wildcat Coupe 401ci Nailhead (Very much in pieces) Photos '66 Impala SS convertible 327-QJet-glide (4 speed swap one of these days...) Photos '69 CST/10 4x4 SWB Stepper 350 2bbl - NV4500/NP241C (Broken Truck!) '72 Sierra Grande 2WD LWB fleetside 350-TH350 Refresh '99 K2500 Silverado RCLB 5.7 Vortec - NV4500/NP241C (Daily) '99 K2500 Suburban 7.4 Vortec - NV4500/NP246 (still working out the bugs) SOLD '71 Custom/10 2WD LWB fleetside - '72 GMC K/3500 Dually (Sold to redryder) |
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03-19-2013, 04:45 PM
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#5 |
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Special Order
  
Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,852
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Re: What RPM's do you have in Neutral/Park?
600 or so
__________________
"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
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