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#1
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Road Paver idle sounds
Here’s 2 cell phone videos of the RP on a 112 LSA in my 10.8-1 CR 517. Really pretty tame. SD Dave wanted a cam about 10 degrees larger @ .050 and said it would be worth as much as 25HP on this set up and still be very streetable but I was worried about around town drive ability.
Maybe someday down the road I’ll try the bigger cam out. Idle in neutral https://www.youtube.com/watch?v=7o-WB9Dd9R8 Idle in gear https://www.youtube.com/watch?v=YAFYcoRm9fI
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68 GTO,3860# Stock Original 400/M-20 Muncie,3.55’s 13.86 @ 100 Old combo: 462 10.75 CR,,SD 330CFM Round Port E's,Old Faithful cam,Jim Hand Continental,3.42's. 1968 Pontiac GTO : 11.114 @ 120.130 MPH New combo: 517 MR-1,10.8 CR,SD 350CFM E's,QFT 950/Northwind,246/252 HR,9.5” 4000 stall,3.42's 636HP/654TQ 1.452 10.603 @ 125.09 http://www.dragtimes.com/Pontiac-GTO...lip-31594.html |
#2
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CI always tames them down.Dave was right.Tom
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#3
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Sounds good I should record my exhaust see if it sounds any good with my phone. The exhaust note changed at idle with the OF 2.0 cam vs the OF and 1/2 a point more compression.
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466 Mike Voycey shortblock, 310cfm SD KRE heads, SD "OF 2.0 cam", torker 2 373 gears 3200 Continental Convertor best et 10.679/127.5/1.533 60ft 308 gears best et 10.76/125.64/1.5471 |
#4
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Nice i like it better in gear
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If your not at the table you're on the menu A man who falls for everything stands for nothing. |
#5
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Sounds great- 517 CID has a way of smoothing out a large cam!
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Will Rivera '69 Firebird 400/461, 290+ E D-Ports, HR 230/236, 4l80E, 8.5 Rear, 3.55 gears ‘66 Lemans, 455, KRE D-Ports, TH350, 12 bolt 3.90 gears '69 LeMans Vert, 350, #47 heads: work in progress |
#6
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Quote:
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#7
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Sounds fantastic! Waiting for a burnout video and timeslip!
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Chris D 69 GTO Liberty Blue/dark blue T400, 9" w 3.50s, 3905lbs 461, 850 Holley, T2, KRE 310s, Comp HR288 w 165s, RA manifolds, 11.60@114, 1.58/60 The spare: 467, 850 Holley, T2, Edelbrock Dport 310cfm w RA manifolds, HFT 245/251D .561/.594L, 11.59@ 114, 1.57/ 60' |
#8
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+2 on rpm question
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#9
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Use them mad skills and look at the video title while playing
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If your not at the table you're on the menu A man who falls for everything stands for nothing. |
#10
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First day with the new brain.....
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#11
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Quote:
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#12
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Thanks. After all of the delays and set backs I’m happy with how it turned out. There’s still a ton of untapped potential left in it though.
It’s funny but I always seem to be late to the party. When 400HP was the hot setup by the time I got there 500HP was common. When that was reached the bar was raised to 600. I get there and it jumps all the way to 1000. My bucket list thing to do is have the chambers in the heads opened up and force feed some air through it. Probably never happen but we can all dream.
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68 GTO,3860# Stock Original 400/M-20 Muncie,3.55’s 13.86 @ 100 Old combo: 462 10.75 CR,,SD 330CFM Round Port E's,Old Faithful cam,Jim Hand Continental,3.42's. 1968 Pontiac GTO : 11.114 @ 120.130 MPH New combo: 517 MR-1,10.8 CR,SD 350CFM E's,QFT 950/Northwind,246/252 HR,9.5” 4000 stall,3.42's 636HP/654TQ 1.452 10.603 @ 125.09 http://www.dragtimes.com/Pontiac-GTO...lip-31594.html |
#13
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Sweet! Love it!
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#14
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Does sound tame!! Sounds good tho, u should’ve put my Jones roller in that thing!
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Darby 74 Grandville 2Dr 455 c.i 4550# 2011 1.60 60 ft,7.33@94.55-11.502@117.74 2017, 74 firebird -3600 lbs (all bests) 1.33 60 ft, 6.314@108.39 9.950@134.32 M/T 275/60 ET SS Drag Radial 2023,(Pontiac 505) 1.27 60 ft, 5.97@112.86, 9.48@139.31.... 275/60 Radial Pro's |
#15
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That Dominator of yours would open it up a bit and still drive nice. The 850DP on it now pulls 2” vacuum over 5000 RPM.
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68 GTO,3860# Stock Original 400/M-20 Muncie,3.55’s 13.86 @ 100 Old combo: 462 10.75 CR,,SD 330CFM Round Port E's,Old Faithful cam,Jim Hand Continental,3.42's. 1968 Pontiac GTO : 11.114 @ 120.130 MPH New combo: 517 MR-1,10.8 CR,SD 350CFM E's,QFT 950/Northwind,246/252 HR,9.5” 4000 stall,3.42's 636HP/654TQ 1.452 10.603 @ 125.09 http://www.dragtimes.com/Pontiac-GTO...lip-31594.html |
#16
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#17
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Road Paver spec cam in my Spotts built 469 RA IV - car was purchased from another member
https://youtu.be/A4WnlgX-EV0 |
#18
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TCS,
I have the same SD 330 cfm CNC ported e-heads- planning to run them and the Road Paver on a 455 (stock 4.21" stroke now). Would stroking the 455 to 4.5" make the RP more streetable? Of course I want the 600+hp, but still wanting some driveability. Geno |
#19
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I'll let TCS respond with his experience but I don't necessarily need to add capacities to the motor to make it more streetable. What CR are you intending to get to, auto or stick, rear end gear ?
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#20
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I agree, 246 @ .050 is fairly small for a 517. We've run that much through 455's and similar BBC's here on 110's, and find them very street friendly. Sounds good through the Dynomax mufflers though, and probably drives like a pussy cat. Put some miles on it and have some fun.
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