Posted By: johnzgarage
hemi rocker choice - 01/20/12 08:26 PM
Im building a 65 belvedere sedan a990 clone. The engine is a 472 cid , 12.5 comp. , solid roller cam and mp aluminum heads . The car will be used mainly for street fun and show, maybe a run or two down the strip. I havent picked out a rocker system yet. Do i need really need to go all $$$$$ on a set rockers shafts and stands, or will a cheaper setup like the one on ebay(sorry) work fine? Wouldnt the stock setup and roller tips on the intake work fine??? I really cant see paying for stage v stuff, when the engine will be rarely push hard. What type of problems might I have with stock parts ???
Posted By: mickm
Re: hemi rocker choice - 01/20/12 08:58 PM
it depends on how radical the cam is. personally, i think the stock setup is good for a lot more than most think. stage V is incredible stuff, (a while back i was working on herb's car with him, i walked up to the engine compartment and he had the valve cover off, and it literally took my breath away! they are works of art, especially when all in place on the head!), but unless it is high horsepower and radical cam specs, i don't think it is necessary.
stock wide pad rockers with the geometry set correctly will do the trick.
Posted By: johnzgarage
Re: hemi rocker choice - 01/20/12 09:23 PM
I havent picked the exact cam yet, but I will try to match it to the max head flow cfm @ 3800-4800 rpm range and what my valve springs can take. Just needs to sound like the old super stockers....I forgot to add that it has a cross ram and 770 carbs.
Posted By: HEMIFRED
Re: hemi rocker choice - 01/20/12 11:24 PM
You can safely life with stock rockers other than all out 9,000rpm .850 lift cams.
I have used narrow pads on motors that regualrly saw 8,000 RPm without trouble.
are there better ones ? yes but do you need to buy them ?
I WOULD FIND A BETTER PLACE FOR MY MONEY
Posted By: HEMIFRED
Re: hemi rocker choice - 01/21/12 04:58 AM
these are from Arlen's Cuda 70's pro stocker and saw 9,000 rpm shift points every pass back then.
The geometry was not perfect but I don't remember many breaking
Posted By: RUNCHARGER
Re: hemi rocker choice - 01/21/12 05:29 AM
My understanding is the Canadian guy on Ebay's stuff is junk, I've never seen the stuff but that's what I've heard.
I've only been running Hemi's since 1980, but I've never had a failure of any type with the stock rockers. Yeah the other stuff looks nice but you can't beat the old original Mopar parts for reliability and price.
Sheldon
Posted By: johnzgarage
Re: hemi rocker choice - 01/21/12 05:49 PM
Thanks for all the anwsers. I think I will shop around for a nice oem set, but if I see a great deal on a trick roller set, I might jump on it !!!!!!
Posted By: B G Racing
Re: hemi rocker choice - 01/21/12 06:16 PM
Stage Vs are the best I've seen,but for under $2000 you can buy a complete set of Indy roller rockers with shafts,clamps,aluminium stands,side springs and shims.The Indy set with the adjustable steel stands is about $300 more.A set of intake and exhaust rockers are a little over $1000.We have had great results with the Indys on all our Hemi builds.
Posted By: 72Challenger
Re: hemi rocker choice - 01/21/12 08:48 PM
I've been running stock 'narrow' ones for years like Fred said. No problems but I'm only running 7000 rpms with a solid flat tappet cam
283@050 .667 lift. I think it mostly depends on spring pressures vs rpm you gonnan run...
Posted By: Defbob
Re: hemi rocker choice - 01/25/12 01:36 PM
someone else's motor here
Posted By: jyrki
Re: hemi rocker choice - 01/25/12 01:44 PM
How about the Barton / T&D set up?
Posted By: dthemi
Re: hemi rocker choice - 01/25/12 02:37 PM
At one time factory rockers were on fuel cars.
Stage V stuff is very nice, Indy's stuff isn't bad either and they have adjustable stands now.
The T+D stuff is expensive, but it allows you to do so much more on getting the geometry correct, and keeping it there after a valve job, or changing valve length and so on. Not to mention the pushrod clearance issues. The T+D will allow you sacrifice one parameter to gain in another. The time saved in geometry correction makes them worth the money to me, and they're just plain better than the factory style stuff in my opinion.
Posted By: jyrki
Re: hemi rocker choice - 01/25/12 03:38 PM
I have a set in zillion boxes. The oiling is through spray bar? Hasn't really yet opened to me how that works.
Posted By: HEMI472
Re: hemi rocker choice - 01/25/12 10:51 PM
where is the best place to buy a set of stock rockers?? i need stands and shafts too. thanks Ed
Posted By: Defbob
Re: hemi rocker choice - 01/26/12 11:27 PM
Darren, How did the FX Hemi rockers work out?
Im building a 542ci indy heads with indy rockers. stock will work fine for street and strip. In other word no rollers. And you don't need them. However if you want them and mine are a new complete set indy rollers, stands, and rocker shafts and springs for 1800. there are some stock type on racing junk under engine parts for around 1000 I think.
The only problem is depending on where you buy them they can cost 2X/3X what others are.Depending on the build would be the justification of the extra cost.The Indys can be adjusted on Indys Legend heads or when using the steel stands on OEM style heads.We have Indys on 90% of our hemi builds and even on Donny's blown alcohol engine.We have had zero failures in 11 years of using them.