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#1
05-25-2007, 06:46 PM
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Rhoads on only Intakes
Building: 455 30 over, Crower 60243, ported 6X - 1.77, 9.4 CR, '66 tri-power, small body HEI, RA manifolds, 4 speed wide Muncie, 3.31 posi
Thinking of running Rhoad's on just the intakes. Anybody doing this, if so how is it working? Pros - cons?
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"Listen to her why-ee-eye-ine......... Listen to her why-ee-eye-ine"  1965 GTO Post Coupe, Burgundy w/Parchment, 467, Crower 60243, Rhoads V-Max, Ported 5C's, JB Roller Rockers, Original '66 Tripower, Dave's Small-body HEI, RA Exh Manifolds, 2.5" Exh X-pipe w/Super Turbo's and SS Splitters, Tremec TKO 600, 3.91 12-Bolt Posi w/bearing retainers, boxed frame, 4X Discs with hydro-boost, EPAS Last edited by mrtonegto; 05-25-2007 at 08:10 PM. |
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#2
05-25-2007, 09:01 PM
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Should work great, with half the noise of a full set.
BE sure to use anti-pump on the EXH to keep the EXH valve cool. |
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#3
05-26-2007, 12:23 AM
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what small body hei do you have?
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is this thing on? |
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#4
05-26-2007, 08:58 AM
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Actually I'm in the process of getting one from Dave's.
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"Listen to her why-ee-eye-ine......... Listen to her why-ee-eye-ine" 1965 GTO Post Coupe, Burgundy w/Parchment, 467, Crower 60243, Rhoads V-Max, Ported 5C's, JB Roller Rockers, Original '66 Tripower, Dave's Small-body HEI, RA Exh Manifolds, 2.5" Exh X-pipe w/Super Turbo's and SS Splitters, Tremec TKO 600, 3.91 12-Bolt Posi w/bearing retainers, boxed frame, 4X Discs with hydro-boost, EPAS |
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#5
05-28-2007, 01:47 PM
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I'd like to hear from all you guys who run this lifter.
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"Listen to her why-ee-eye-ine......... Listen to her why-ee-eye-ine" 1965 GTO Post Coupe, Burgundy w/Parchment, 467, Crower 60243, Rhoads V-Max, Ported 5C's, JB Roller Rockers, Original '66 Tripower, Dave's Small-body HEI, RA Exh Manifolds, 2.5" Exh X-pipe w/Super Turbo's and SS Splitters, Tremec TKO 600, 3.91 12-Bolt Posi w/bearing retainers, boxed frame, 4X Discs with hydro-boost, EPAS |
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#6
05-28-2007, 02:58 PM
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I've run the Rhoads lifters on two different cams in a 400. Ran them on both intake and exhaust though, not just intakes. I have no back-to-back comparison with regular lifters, neither cam was run with regular lifters, just the Rhoads.
What info are you looking for?
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---------------------------- '72 Formula 400 Lucerne Blue, Blue Deluxe interior - My first car! '73 Firebird 350/4-speed Black on Black, mix & match. |
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#7
05-28-2007, 05:48 PM
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I'd like to know if doing so actually improves the exhaust flow - as I have heard. Provides scavenging, allowing the exhaust to run with more duration at the lower rpms.
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"Listen to her why-ee-eye-ine......... Listen to her why-ee-eye-ine" 1965 GTO Post Coupe, Burgundy w/Parchment, 467, Crower 60243, Rhoads V-Max, Ported 5C's, JB Roller Rockers, Original '66 Tripower, Dave's Small-body HEI, RA Exh Manifolds, 2.5" Exh X-pipe w/Super Turbo's and SS Splitters, Tremec TKO 600, 3.91 12-Bolt Posi w/bearing retainers, boxed frame, 4X Discs with hydro-boost, EPAS |
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#8
05-28-2007, 07:10 PM
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Rhoads lifters
I run full sets of Rhoads lifters in all three of my Pontiacs for two reasons: Better street manners (higher vacuum w/455 performance sized cams) and I feel that they are highest quality hydraulic lifters that are currently available in the market. My engine specs/performance are listed in the Street Topic sticky.
Les
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Les Iden ---------------------------- '65 Buick Sport Wagon Custom, 340, T350, 3:23 '66 GTO Post/468, 700R4, 3.31 (Mike's as of 9-16) '68 Grand Prix/455, dual AFBs, T400, 2:93 posi (sold) '72 TA tribute/461, T400, 3.08, (Russ's as of 9-16) '97 Mitsubishi Eclipse Spyder Turbo, Konis, 5 speed '09 Torrent GXP, nav, Sun & Sound pkg., Bilsteins |
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#9
05-31-2007, 07:21 PM
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Just in case anyone is interested.......... I called Crower, told the tech my combo (455, lg valve/ported 6X, 9.4 CR, Crower 60243, RA manifolds, 2.5" exh, trips, Muncie M20, 3.31 posi) and he said running the Rhoads on just the intakes makes sense.
That's what I'll be doing when we put it together. FWIW
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"Listen to her why-ee-eye-ine......... Listen to her why-ee-eye-ine" 1965 GTO Post Coupe, Burgundy w/Parchment, 467, Crower 60243, Rhoads V-Max, Ported 5C's, JB Roller Rockers, Original '66 Tripower, Dave's Small-body HEI, RA Exh Manifolds, 2.5" Exh X-pipe w/Super Turbo's and SS Splitters, Tremec TKO 600, 3.91 12-Bolt Posi w/bearing retainers, boxed frame, 4X Discs with hydro-boost, EPAS |
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#10
05-31-2007, 08:29 PM
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i 2nd wheelspin's comments entirely.
but i dont see a reason not to run them on all 16.
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is this thing on? |
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#11
05-31-2007, 09:06 PM
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I did some test with Rhoads used on the intks only,exh only and intk and exh.Found running on the intk only created more vac in gear then running on the exh only.the biggest improvement was the use of Crower solid lifters with tight lash on the same ra4 cam.
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#12
05-31-2007, 09:13 PM
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joes455: What did your tests measure? Improvement in what?
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"Listen to her why-ee-eye-ine......... Listen to her why-ee-eye-ine" 1965 GTO Post Coupe, Burgundy w/Parchment, 467, Crower 60243, Rhoads V-Max, Ported 5C's, JB Roller Rockers, Original '66 Tripower, Dave's Small-body HEI, RA Exh Manifolds, 2.5" Exh X-pipe w/Super Turbo's and SS Splitters, Tremec TKO 600, 3.91 12-Bolt Posi w/bearing retainers, boxed frame, 4X Discs with hydro-boost, EPAS |
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#13
05-31-2007, 09:32 PM
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vac test were performed in gear and neutral.Best vac was acheived using the Rhoads on both the intk and exh,sec to that was the use of the lifters just on the intk.Iv'e found out that as far as all out power goes ,the solid lifters were the way to go for my setup.Though vac with the solids was about the same as with just using Rhoads on the intk.
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#14
05-31-2007, 09:42 PM
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It would be good to know comparisons in performance, ie. ET, mph, mpg...
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"Listen to her why-ee-eye-ine......... Listen to her why-ee-eye-ine" 1965 GTO Post Coupe, Burgundy w/Parchment, 467, Crower 60243, Rhoads V-Max, Ported 5C's, JB Roller Rockers, Original '66 Tripower, Dave's Small-body HEI, RA Exh Manifolds, 2.5" Exh X-pipe w/Super Turbo's and SS Splitters, Tremec TKO 600, 3.91 12-Bolt Posi w/bearing retainers, boxed frame, 4X Discs with hydro-boost, EPAS |
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#15
05-31-2007, 10:05 PM
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Does anybody listen to my comments: I advised half the set for HALF THE NOISE. A full set makes your car sounds like a garbage truck.
I've since grown past Rhoads lifters by making my own leakers from whatever I gots. And using a biggie cam but not too big...because the cam duration is not providing the "dramatic" improvements unless accomodated by the dramatic lift. Sooooo, I try for Lift, yet also watch for lobe life. Turns out the 455 engine makes similar huge power with a cam variety ranging from "boring profiles to radical profiles. I recommend the most boring profile that just barely gets the performance limit you are striving for. Then add 1.65:1 rocker to be over that top. The 455 we're building now has a Ram Air IV High Lift cam...more radical than what is presently in my (unproven track performance) 68 GTO project, that has logged 4,440 miles since Oct 2006 doing that commuting thing. Yet it feels like low-mid 12's for 87 to 89 Octane at full advance...with 1.5:1 Rockers. Rhoads would not help that. I plan to try a couple Intakes, and an Intkae set of 1.65:1 this season. All I needs is the slicks mounted (got the rims).
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12.24/111.6MPH/1.76 60'/28"/3.54:1/SP-TH400/469 R96A/236-244-112LC/1050&TorkerI//3850Lbs//15MPG/89oct Sold 2003: 12.00/112MPH/1.61 60'/26"x3.31:1/10"/469 #48/245-255-110LSA/Q-Jet-Torker/3650Lbs//18MPG 94oct Sold 1994: 11.00/123MPH/1.50 60'/29.5"x4.10:1/10"/469 #48/245-255-110LSA/Dual600s-Wenzler/3250Lbs//94oct |
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#16
05-31-2007, 10:08 PM
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HIS: It ain't just about noise....lol
__________________
"Listen to her why-ee-eye-ine......... Listen to her why-ee-eye-ine" 1965 GTO Post Coupe, Burgundy w/Parchment, 467, Crower 60243, Rhoads V-Max, Ported 5C's, JB Roller Rockers, Original '66 Tripower, Dave's Small-body HEI, RA Exh Manifolds, 2.5" Exh X-pipe w/Super Turbo's and SS Splitters, Tremec TKO 600, 3.91 12-Bolt Posi w/bearing retainers, boxed frame, 4X Discs with hydro-boost, EPAS |
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#17
05-31-2007, 10:16 PM
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Listen, to Wheelspin and put in all Rhoads lifters and be done with it..Do it right the first time because its always much cheaper in the long run. Jim Hand's book also agrees with Rhoads as being the best made lifter out there for the money.. I went to them a year ago and they work great in my racecar..Have already bought two more sets for new engines.
The workmanship is great and heavy-duty construction.. I also think they are worth some ET at the track... The new 350ci thinks its a 400, running 12.0's at 3800 lbs.in stock class... Not bad for a slug, send me all those 350 you can.......................Dave...1033/stock(RV-455) 350 |
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#18
05-31-2007, 11:24 PM
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I love my rhoads also.. Yes they make some noise, but who cares its when u can punch it from a dead stop and roast 4600 pds!! and the mustang next to you goes what was that!? lol
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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 |
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#19
05-31-2007, 11:34 PM
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I'm not questioning the use of the Rhoads. I'm asking if anyone has experience, or can make an argument one way or another, that with the right cam overlap there might be a performance improvement running them on just the intakes (vs on both int & exh).
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"Listen to her why-ee-eye-ine......... Listen to her why-ee-eye-ine" 1965 GTO Post Coupe, Burgundy w/Parchment, 467, Crower 60243, Rhoads V-Max, Ported 5C's, JB Roller Rockers, Original '66 Tripower, Dave's Small-body HEI, RA Exh Manifolds, 2.5" Exh X-pipe w/Super Turbo's and SS Splitters, Tremec TKO 600, 3.91 12-Bolt Posi w/bearing retainers, boxed frame, 4X Discs with hydro-boost, EPAS |
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#20
06-02-2007, 09:09 AM
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Here's a thread from Classical's site that includes the theory and some test numbers concerning the Rhoads-intakes-only.
Doesn't show the author, but a 455 running .20 better with intakes-only versus all-Rhoads (int & exh) is pretty impressive. Even the author didnt believe the results and changed cams to verify it! Sell the other eight boys - I've got 8 new ones - anybody interested? http://classicalpontiac.com/qa/displ...6&number=5340&
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"Listen to her why-ee-eye-ine......... Listen to her why-ee-eye-ine" 1965 GTO Post Coupe, Burgundy w/Parchment, 467, Crower 60243, Rhoads V-Max, Ported 5C's, JB Roller Rockers, Original '66 Tripower, Dave's Small-body HEI, RA Exh Manifolds, 2.5" Exh X-pipe w/Super Turbo's and SS Splitters, Tremec TKO 600, 3.91 12-Bolt Posi w/bearing retainers, boxed frame, 4X Discs with hydro-boost, EPAS |
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