Big Block Edelbrock RPM Heads

Anyone have experience running them? I am thinking about them but I guess the angle plugs create a clearance issue with some headers. Any info is much appreciated.

http://www.hughesengines.com/TechArticles/3dunnuckracing440withwhiplashhmc3245bl7cam.php

I want to copy this build since I have everything else

i used them on my build and they work great. would love to get some dynotime but they work.

I got them when they first came out, and they're still working fine.

'69 b body, I tried two sets of headers and two exhaust (among other things) in the pursuit of speed.

For spark plug socket clearance....2 small dings required with hooker competition b body, none required with 2" super competition b body.

Before bolting in a car, put the heads on a bench, bolt the header on and make whatever adjustments you need to make to change
spark plugs. Or do it on an engine stand.

i'm running a pair on a 440 in my '65 coronet. i use 2" tti headers and the angle plugs fit nicely. i'm using a fel-pro 8519 head gasket and 2021 will be my 7th year without any issue. the heads i have weren't very nice casting wise so i piddled with the ports a little. they bolted up fine but i had to do some rocker geometry change and they need custom push rods. i think the big issue with them is rocker geometry and push rod length. there's no way a stock valve train would have worked with what i have.

Same here. '65 Belvedere.

I also got a set when they first came out. They have been on 3 different engines now and were ported by MCH. No problems at all with them. 2" TTIs fit just fine.

I run a set OOTB with spring change to accommodate a mild street solid roller cam. On a low deck stroker 470" in a street toy A-body. Been together for 8-10 years with zero issues. Running Comp rockers and Hughes shaft spacers,etc. Makes 500+hp and spins easily to 6K+.

Been running them in my dart with a 383 and pro parts headers. Had to ding the headers a few places but not due to the angle plugs.

Built 6 440's using the angled plug versions. They all cleared the various types of headers we used. 4 of them have been to the track. From mild 12.90's to 10.80's. All were out of the box. All weighed at least 3700 race ready.
Doug

Got them on a 521ci motor in a C-Bod weighing in at over 4000lbs.

Daily driver around London Town and yes its been down the strip, in full street trim.

OK it was a hot day and we didn't do any prep, 13.20.

TTI C-Bod headers fitted like a GLOVE!

Nearly forgot the best bit, 950cfm carb and 16mpg...

Run them through a competent machine shop to check guide clearance, decks for flat and fix the valve job.

No such thing as ready to run OOTB no matter who builds it.

Kevin

They are good heads. I like to get them bare and have my machine shop finish them. The casings are made in USA but not sure of the valves springs etc.I havent had any problems. 2870 lb challenger with driver runs best of 10.28 12.40 compression 440. Keith