First off over head cam, Timen belts, unibody , front wheel drive all came about due to they are cheap and fast down the assembly line not reliable, not technology and not safer or better handeling.

 If you compare over head vs Push rod you would fine like GM did with there research is that push rods make simply more hp across the rpm band. Reason is that pushrods dont require heavy timen chaines or dual cams to open four valves per cylinder set ups. Translation less parastic drag is in push rods than compared to over head cams. GM done there home work and it shows they won the last 8 Straight 24 hour lemans races in the gt1 classes which is second class to prototype no factory based engine /chassis. Also GM won the world Engineering award for the LS v8 push rod engines and note was saying its simplicity is its superiority and couldnt be denied top in the world engine due to it won the last 8 24 hour lemans with a engine thats actualy based on a production motor (no import car in lemans races with a actual blue print copy of one of there off the shelf production engines).
 
  Also look at the drag racen world since the 70s there has been push rod engines maken 6 to 8 thousand hp and currently in nhra up to 10 thousand hp . Best in the world over head cam motor only make shy of 2 thousand hp due to over head cams will self implode when maken big hp due to timen chaines over six foot long dont take big hp abuse. And if they run timen belts they snap easily you know this at 60 thousand miles honda toyota and nissan recommends to change the damn 30 dollar pos.  

The problem with your assesment and why most people would find you clinically insane is that the whole fact that you mentioned these two things Pushrods (which are succeptible to heat) and GM doing things right.... One I think you base your loyalties on the companies you think are the best ones, but do you trust completely on the technology? The reason why GM still uses pushrods on they're cars is that because of one simple reason. The unions have a strangle hold on GM and GM's unability to cope with the market. Are you going to tell me that if The Corvette in the American LeMans were to be modified to compete in the classes where Oh lets say the ones were Ferraris and Porches (which win almost all of the positions)now don't give me that there's porches and ferraris where the pushrod competes too... You know what I mean the one where all the cameras go to see European supercars duke it out for the prestige and the glory your "push rod" would be outclassed, outdated, and practically lost by default.

More machining equals more cost more parts equal more costs, more factories to make them and new deals with the unions.  Now before you go out and claim that I don't know crap about what I'm saying or give me a speech obout Oh whatever the hell you want. Here it goes. If you get a oh an 5.0 mustang wich makes 300 to 310 respectively and port and polish the heads agressively to the point where it is jsut as good as a Mercedes AMG or BMW M3 the valves would brake cuz they're made of crummy shitty material in oh... 30,000miles! But you'd be making from 50hp-100hp. NOw if it were DOHC direct injected with two camshafts  well we would call that an Audi, Mercedes, BMW Engine now wouldn't we?... Same goes for the GM counterparts.

I place my loyalties on the right technology, not the company remember that. i-VTEC is Better than VVT, VVT-i, and others, but the weakness is in its high reving application which leave little for low end torque. See I rather see the strenghts and weaknesses of cars rather than "That car was made by the GENERAL so its a WINNER to ME!!!!"

on a final point get a 90's Z-28 do an agressive port and polish, 4 angle valve job, deburr the quensh area and put on some high compression pistons and a baffled oil pan and you get a corvette engine power.... Might also get a recalibrated ECU too for fuel mapping and timing.... (See its all in the technology and method.)

QUIT WATCHING POWERBLOCK ON SPIKE AND PICK UP A BOOK!!!!!!!!!!!  

Ah little harsh???  

A little harsh???  

LOL FIRST OFF YOUR A IDIOT . GM engines that race are still direct blue prints of stock corvette engines no other engine in Lemans world does this its altered by block designe head designe etc not simple as a port an polish job though nice try and good taste in TV I see.
Oh Second parts the GT2 series where Imports sometimes wins recently lost to a front engine designe Panoz car in 2006 from a car manufacture in Georgia (state in USA). Note if rear or mid engines designes are so great how did a small company build a car off a SVT cobra engine (if you watch power block you know this HORSE Power TV made 500 just with ecm and blower pully swap) and a mustang chassy. PANOZ LOOK IT UP TOOK PORSCHE 12 YEAR RAIN ON GT2 AWAY LOL.
 OH idiot ford has been running over head cams since 96 . TARD. Also ford 2 liter or four cylinders run Timen chaines today not cheap replace me every 60 thousand miles honda toyota and nissan crap does.
     OH YOUR A IDIOT.  

ITS KINDA STRANGE EVERY TIME THEY WORK ON TOYOTA OR NISSAN IN POWER BLOCK THEY SWAP THE REAREND AND AXLES FOR RELIABLE FORD PARTS. WELL WE START WITH A TOYOTA SHELL THEN PUT IN FORD AXLE , CHEVY CRATE MOTOR , TURBO 400 TRANS AND WALLA TOYOTA TUFF WITH FORD AND CHEVY STUFF. OH YOUR A IDIOT!!!!!!!  

Well if your still not convinced it 2008 and there is no over head cam motor in the world maken with under 500 cubic inches over 2 thousand hp why is this why cant it be done. OH go check out hot rod magazine article they did on the Fbomb car a 1500 hp street legal pump gas car . They ran this against a highly modified Ferrarie and kicked the ferraries Butt. . Its on the hot rod web site and has picks of the Fbomb and ferrarie racen this was a all out top end race so dont tell me ferraries are built for drag racen bs.
Also in handeling department a Corvette will out Run and Handel (this includes braken) any import in the entire world currently produced under 600 thousand dollars. Note I can buy parts for a ferrarie at the local autozone I cant with a ferrarie.  

I can buy parts for a Corvette at local autozone I cant with a LAMBO OR ferrarie or porsch etc.  

Vtech IS A DIRECT RIPP OFF OF GM VORTEC ENGINE LINE UP, ALONG WITH OTHER THINGS LIKE GSX , XR7 ETC ETC.
Orginal GSX was a 390 hp buick
Orginal XR7 is a cougar from ford  

OUT classed and out dated?
Why does porsche ferrarie etc race in the GT2 a slower class than what corvette runs in the GT1 class or first class cars.
In 2006 the PANOZ car built off a Ford svt motor and mustang chassy wupped the 12 year rain porsche had on the 24 hr lemans this is with a ford motor . FYI tard ford has run over head cam since 1996.  

Oh another thing FERRARIES ARE V10S AND PORSCHE RUN 100 YEAR OLD POWER ADDERS .
CHEVY AND FORD RACE CARS DONT RUN POWER ADDERS OR V10S JUST V8S.
  FERRARIES AND PORSCHE BUBBA GUMP TECHNOLOGY ADD MORE CYLINDERS BUBBA WE MAKE MORE HP NO NO BUBBA WELL JUST KEEP ADDING BOOST CUASE OUR CRAPPY ENGINES CANT MAKE HP WITH OUT IT .  

OH LOOK UP WHAT ENZO FERRARIE FIRST RACED FOUR CYLINDER CAR EVEN HAD A THEORY ON IT. Enzo ferrarie theory was that four cylinder engines had less moven parts there for could make more hp than v8s , even had very large displacment four cylinder cars over 3 liters etc. He abonden this theory with the introduction of v12s and developed another theory. HE FELT that short stroke motor with high compression was faster reving and there for made more hp(this is what gives a exotic ferrarie its unique sound). OH FYI HE WAS WRONG on both accounts .
 Enzo Ferrarie had forgotten the most basic princiable of what a engine is . A engine defined is nothing more than a Air Pump. Proof he was wrong exist in his era . A Man built a car in is garage, a chicken farmer by the name of CAROL SHELBY. This Texan chicken farmer wupped the liven day lights out of Enzo ferrarie so bad he even Delayed races and refused to race old Carol. Carol Shelby built a FORD BIG BLOCK V8 PUSH ROD WITH LONG STROKE SET UP NOT SHORT STROKE(Which gives his motors the unique sound IM Going to Totaly KICK YOUR ASS). NOTE this is important due to its not the rpms , its not the compression , butt its the rate of volume/velocity air is being circulated out of the motor .
 There is another classical tell in this story . Why did Carol Shelby abonden the AC Cobra? Short wheel base cars dont handel as well as a long wheel base car Hence the birth of the DaytonaS.  

Yet heres where you go wrong... an engine is a heat pump a turbo is an air pump... The reason why the corvette wins its because its 80% carbon fiber the 6spd is in the back giving it the best static weight distribution available. On engines hmmm.... I don't think you listened you just googled a bunch of crap in your favor. ON that ugly piece of *** Fbomb and Sound over performance.... tsk tsk tsk. Ok here goes (and I'm not using Google!) way early on and still to this day GM and Ford put everything in first then leave the air ports last on the heads the flow sharts prove it (GOOGLE IT!). If you wanna go into the dark side and actually use Spike well they did a contest of Wyotech or the idiots who didn't want to go to UTI.... well long story short the guys with the ported and polished head won... and that shelby guy he's a great guy come on he even helped create the BRE Datsun engine that whipped all them muscle guys in the Grand am race three years straight! on the OHC I was talking about a 5.0 not a 4.96.... there's a difference there. I'm not saying displacement is wrong a car with more displacement will always beat a car with less DUH!!! and HONDA Where in the hell did you take VTEC being a rip off your shitty GM conterpart was none other than an unreliable piece of crap gizmo that said "4 CYLS TURN OFF!" whatch me applaud at GMs stocks falling cuz of recalls. OK now going into car and driver.... on reliabilty the Corvette gets a black dot...that means don't buy it for the long haul. On the le Mans last season the Viper finished 4th on practice tires and the Corvette in 5th in one race (see displacement is good...)  Now hurry on and google more crap I have nothing better to do with my life.

for future reference a wet manifold is never better than a dry one so don't bring up more old crap.... The ferraris used mechanical injection which wasnt reliable on the rev ranges. cool now go google!  

Master,
That dude is somethin' else isn't he? I like all these facts he gets off wikipedia. I personally think he talks to much...and should join a different forum.  

First off what type of heated substance does a engine pumpe heated what what what AIR YOU IDIOT!!!
SECOND THE DATSUN NEVER RACED MUSCLE CARS AND WHAT CAROL SHELBY SAID ABOUT THE CARS HE RACE FOR NISSAN WAS THAT HE NEVER FINISHED BETTER THAN SECONED THE FORDS WERE TO STRONG AND SAID LITERALY THAT HE HAD THE COMPRESSION AND BOOST UP SO HIGH ON THE MOTORS SOUNDED LIKE A BEER FART. (His exact words)
- Carol Shelby is also one of the people entirely responsible for the tuner world . LOOk at his tuner cars he built, for instance the Turbo Datyona Shelby model. This car can be seen in the movie {WRAITh} (OPENING SCENE 2 LITER TURBO RACEN BLOWN V8). Note they say pop the hood and what is there on valve cover Shelby)
Third GOOGLE IS AND NEVER WILL BE A SOURCE OF REFERENCE .
FOURTH What the hell is this argument about port and Polish I at no point reference this in anything I have written. Actualy a Port and polish will hurt performance on most engines due to it will lower compression ratios. Only if compression ratio is constant and you allow then for port and polish ,will you see increase in hp in the Combustion chamber. (you will see immediate hp gaine in port and polish of intake runners etc .)
Fith Dry and wet intake ? what are you refering to it could be two things
- the type of nitrous induction wet or dry
- Water injection
you tell me!
Fbomb is a showing that people in the know , will always dominate the stupid and rich . The bible said there will not be many deciples of GOD. This is a tuner magazine, you should be on hot rod magazines side bunch of guys little know how and walla kicken the crap out of some rich kid millionar. (Money cant buy true intelligence)