Nickey4271647545519 Posted January 22, 2010 Report Share Posted January 22, 2010 heres a long description of my engine builders destroked 302sbc so high RPMs are are definitely possible even in an old school push rod motor. Engine Builder: Watson Ruppel Performance Engine Specs: 282 in. Small block Chevy (2.750 stroke 4.040 bore); Comp Cams roller and valvetrain aluminum rods; steel billet crank; forged lightweight pistons; 15.8 to 1 compression ratio; Chevy 15 degree aluminum heads; fully ported and flowed; titanium valves; 4-bolt main Bowtie block; custom sheet metal aluminum intake; 2 Holley 660 carbs with 850 baseplates; Jessel rocker system and belt drive; special 3-step headers; single stage external oil pump; 680 horsepower. Fuel: VP Racing Fuel, 120 Octane Chassis and suspension builder: Watson Ruppel Performance Drive Train: Special carbon fiber racing clutch; G-force 5-speed racing transmission; H.D. aluminum driveshaft; 9" Ford rear end housing with H.D. aluminum center section; 40 spline gun drilled axles; 650 gear ratio; 4-link suspension with coil over double adjustable shocks; 4-wheel disc brakes; Weld aluminum lightweight wheels; Goodyear 15" wide slicks. Run Description: Car is launched at 10,000 RPM and then shifted at 9,600 RPM on each gear change; the 5th gear change is made at about the 1/8 mile mark and about 6 seconds into the run; 0 to 60 ft. times are 1.30 seconds; best E.T. in quarter mile; 9.42 @ 144 MPH; car must weigh 2,965 lbs. with driver. He used to hold several NHRA records with this car. My dad also used to work up at pacemakers in the late 80's and they had another guy show up with a 67 z28 that raced super stock with a destroked 302. He sat on the line with the throttle pegged, was able to max out a 12.5K rpm Moroso cable drive tach. They guessed he sat right around 14k RPM on the line and it never missed a beat. Quote Link to comment Share on other sites More sharing options...
Doug1647545489 Posted January 22, 2010 Report Share Posted January 22, 2010 Top fuel only turns about 3 8500 rpm on a 1/4 mile 330 mph pass. Quote Link to comment Share on other sites More sharing options...
Ry_Trapp01647545522 Posted January 22, 2010 Report Share Posted January 22, 2010 (edited) i think a lot of people are forgetting about the "...for the street" aspect of this thread. And how many of them blow up each race? Could your car's engine spin 8000rpm for 500 miles? Would you consider your engine reliable? irrelevant. my car's engine could spin 6,000RPM for 500 miles and soldier on because that's what it was designed to withstand(read about the durability testing that ford's coyote 5.0l went through). if i built it to spin 8,000RPM for 500 miles, then it would require a rebuild shortly after, just like a NASCAR V8. WTF are you talking about? How much torque do you think a Nascar motor makes at 9000rpm compared to 5000rpm? A "modern" synchromesh transmission can handle 10,000 rpm just fine. Ugh! not sure what a NASCAR engine has to do with a synchro tranny at ~10k RPMs(these guys run dogboxes for a reason)... do you have any examples? i'm talking about reasonable cost and reliability. a stock T56 will, without a doubt, fail after use behind a 10k RPM engine, and 1 off parts obviously won't be 'reasonably priced' compared to an off the shelf dogbox. maybe i'm misinterpreting your stance on this, but i'm talking about a drivetrain that could potentially be taken on a road course, ran at these RPMs, driven home, not cost a fortune(I.E. no $50k transmissions), not require valve lash adjustment every 500 miles, not require 10 new sets of valve springs or camshafts throughout the life of the engine, etc. if we're talking about lasting a couple 1/8th mile passes, then that's a different topic altogether. give me a ford DOHC 4.6l, jaguar/land rover/aston martin AJV8, or any number of other euro DOHC V8s backed by a jericho road racing 5 speed. Edited January 22, 2010 by Ry_Trapp0 Quote Link to comment Share on other sites More sharing options...
Trouble Maker Posted January 22, 2010 Report Share Posted January 22, 2010 10krpm street V8 http://www.columbusracing.com/forums/showthread.php?t=56816 http://www.h1v8.com/page/page/1562068.htm http://www.h1v8.com/i/350wide/home_page_engine2.jpg Quote Link to comment Share on other sites More sharing options...
wagner Posted January 22, 2010 Report Share Posted January 22, 2010 I know that they make parts for 2jz's, and 4g63's that can spin 10grand. I do remember a long time ago, i saw a video of Team Rice's Del Sol, and that car spun 15k. 2jz is not a V8... Quote Link to comment Share on other sites More sharing options...
gillbot Posted January 22, 2010 Report Share Posted January 22, 2010 A guy at one of the track days I was at spun his LS1 to 9k i think. Hell, I spin mine to 7500 and it's stock sans valve springs and cam. Quote Link to comment Share on other sites More sharing options...
zeitgeist57 Posted January 22, 2010 Author Report Share Posted January 22, 2010 10krpm street V8 http://www.columbusracing.com/forums/showthread.php?t=56816 http://www.h1v8.com/page/page/1562068.htm http://www.h1v8.com/i/350wide/home_page_engine2.jpg That's bada$$. Looking forward to checking out the multimedia links at home tonight... Quote Link to comment Share on other sites More sharing options...
RyM3rC Posted January 22, 2010 Report Share Posted January 22, 2010 a stock T56 will, without a doubt, fail after use behind a 10k RPM engine Proof? Numerous people here have already witnessed/experienced even old chevy small blocks turning the propositioned RPM and being driven on the street. /thread Quote Link to comment Share on other sites More sharing options...
Ry_Trapp01647545522 Posted January 23, 2010 Report Share Posted January 23, 2010 no no no, i'm talking about regular high RPM use, not just some trips down the 1/4. seriously, if i'm wrong then correct me with some legitimate proof that a mass production synchro manual transmission can reliably withstand 9000-10000RPM use during, say, an open track session or something. i'll fully admit i'm wrong because there is no reward in pretending i'm right if i'm not. Quote Link to comment Share on other sites More sharing options...
Clifford Automotive Posted January 23, 2010 Report Share Posted January 23, 2010 guy in hilliard has been building 9k rpm small block chevys for years...too long for me to remember that far. Quote Link to comment Share on other sites More sharing options...
gillbot Posted January 24, 2010 Report Share Posted January 24, 2010 i think a lot of people are forgetting about the "...for the street" aspect of this thread. how often are you going to be at 10k on the street? Quote Link to comment Share on other sites More sharing options...
Ry_Trapp01647545522 Posted January 24, 2010 Report Share Posted January 24, 2010 how often are you going to be at 10k on the street? everyone is talking about these pushrod engines that can hit 9k, but what is the maintenance like on these engines? how stiff are those valve springs? Quote Link to comment Share on other sites More sharing options...
04r1 Posted January 24, 2010 Report Share Posted January 24, 2010 Drove a brand new M3 to over 8,000rpm last night. Motor sounds incredible. 8400 rpm max. Quote Link to comment Share on other sites More sharing options...
Trouble Maker Posted January 24, 2010 Report Share Posted January 24, 2010 Drove a brand new M3 to over 8,000rpm last night. Motor sounds incredible. 8400 rpm max. I said gawddd dammnnn. I bet that sounded like music. Quote Link to comment Share on other sites More sharing options...
gillbot Posted January 24, 2010 Report Share Posted January 24, 2010 everyone is talking about these pushrod engines that can hit 9k, but what is the maintenance like on these engines? how stiff are those valve springs? I do no maintenance on mine and I'd spin higher than 7500 is I had better rod bolts. As for the one that spun to 9k, I have no idea what kind of maintenance he does nor what his build was like. Quote Link to comment Share on other sites More sharing options...
AJ Posted January 24, 2010 Report Share Posted January 24, 2010 http://forums.corvetteforum.com/c5-tech/2513091-highest-reving-ls-engine.html Quote Link to comment Share on other sites More sharing options...
Doug1647545489 Posted January 25, 2010 Report Share Posted January 25, 2010 A reliable 9k in a LSX is not very difficult. Solid roller, Light valves, and some obsolete high rate Nascar springs will get you there. Quote Link to comment Share on other sites More sharing options...
unfunnyryan Posted January 25, 2010 Report Share Posted January 25, 2010 http://www.dself.dsl.pipex.com/MUSEUM/POWER/unusualICeng/rotaryvalveIC/rotaryvalveIC.htm#alpha Came across this..lots of cool valvetrain designs. I'm surprised more of them aren't in use Quote Link to comment Share on other sites More sharing options...
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