Will this make 500 hp ?
Moderator: Team
Re: Will this make 500 hp ?
Just wondering....As a street engine ,what is the drivability in normal situation?
Motorcycle land speed racing... wearing animal hides and clinging to vibrating oily machines propelled by fire
Re: Will this make 500 hp ?
What can your average home builder who doesn't have access to a Serdi or Sioux do to correct shoddy seat work?fdicrasto wrote: ↑Sat Aug 11, 2018 10:38 pm I think you have a good combination that can make an honest 500 hp. I would caution you on "out of the box" cylinder heads however. They need to be pulled apart and all the valve work checked and touched up and of course use the valve springs designed for your camshaft. Some of the mail order heads have garbage hardware and shoddy assembly problems. Seen it several times in the past.
-
- Guru
- Posts: 3285
- Joined: Wed Jun 25, 2008 1:46 pm
- Location: NC
Re: Will this make 500 hp ?
Take them to a reputable shop for a check over!RevTheory wrote: ↑Sun Aug 12, 2018 10:17 amWhat can your average home builder who doesn't have access to a Serdi or Sioux do to correct shoddy seat work?fdicrasto wrote: ↑Sat Aug 11, 2018 10:38 pm I think you have a good combination that can make an honest 500 hp. I would caution you on "out of the box" cylinder heads however. They need to be pulled apart and all the valve work checked and touched up and of course use the valve springs designed for your camshaft. Some of the mail order heads have garbage hardware and shoddy assembly problems. Seen it several times in the past.
Pay now.....or maybe pay even more later!
-
- Guru
- Posts: 6386
- Joined: Tue Jul 24, 2012 11:15 am
- Location: Roseville, Michigan (just north of Detroit)
- Contact:
Re: Will this make 500 hp ?
The E-210's are pretty good heads.
I downsized the intake valve to 2.055", (for use on a 4" bore block), and using a 50 degree seat, got almost 290 feet.
I think this could get near or past 500 horsepower, if it is in good tune; with a better carb.
http://www.rmcompetition.com
Specialty engine building at its finest.
Specialty engine building at its finest.
-
- Guru
- Posts: 3285
- Joined: Wed Jun 25, 2008 1:46 pm
- Location: NC
Re: Will this make 500 hp ?
Just looked at those heads. Don't know much about them, but I would think 500hp at 400ci would be a walk in the park...
Hell, was making 500hp at 358ci, with unported, iron phase 2 bowtie heads, flat tappet cam and an out of the box 650dp carb back in the late 80s.
As others have said, the intake and carb might hold you back a bit but.........?
Hell, was making 500hp at 358ci, with unported, iron phase 2 bowtie heads, flat tappet cam and an out of the box 650dp carb back in the late 80s.
As others have said, the intake and carb might hold you back a bit but.........?
Re: Will this make 500 hp ?
Install it in your Malibu and drag test it before you deliver the motor. Now you know it's real power.
You're not going to learn anything by gauging this built based on internet opinion.
I don't see 500 HP there in that form.
If it runs 117 mph (1/4 mi) in a #3500 car, it is making 500 HP. There is your yardstick.
A radar gun costs $100.
You're not going to learn anything by gauging this built based on internet opinion.
I don't see 500 HP there in that form.
If it runs 117 mph (1/4 mi) in a #3500 car, it is making 500 HP. There is your yardstick.
A radar gun costs $100.
Re: Will this make 500 hp ?
I haven't had the luxury of looking at these particular heads. EVERY Edelbrock head I have seen has a stupid big bowl area. If these are similar, you will have no problem making your hp goal but at the risk of horrible part throttle driveability with fuel puddling. Just sayin, high speed pinch and low speed after is a bad head.
That combo should make about 540hp.
That combo should make about 540hp.
Heat is energy, energy is horsepower...but you gotta control the heat.
-Carl
-Carl
Re: Will this make 500 hp ?
Warp Speed wrote: ↑Sun Aug 12, 2018 10:47 amTake them to a reputable shop for a check over!
Pay now.....or maybe pay even more later!
Warp, I know you know what you do.
The biggest lie ever told is "You get what you pay for" The only way you KNOW is if you KNOW what you are paying for and get what you paid for. The difference in assemblers and "one in the know" can be astounding. Study study study, if you care.
Comment not intended towards anyone, just food for thought.
Heat is energy, energy is horsepower...but you gotta control the heat.
-Carl
-Carl
Re: Will this make 500 hp ?
I think it may make 500.
BTW- I've never received a set of heads from the Bs, WPs, Es or Ds that did not need seat work / valve job.
I wouldn't dare run OOB heads on anything I cared about.
In 2003, I ordered a set of T1s that had to have the seats moved- they were that far off.
It appears that in many cases, one doesn't get what you pay for, unless one pays again.
BTW- I've never received a set of heads from the Bs, WPs, Es or Ds that did not need seat work / valve job.
I wouldn't dare run OOB heads on anything I cared about.
In 2003, I ordered a set of T1s that had to have the seats moved- they were that far off.
It appears that in many cases, one doesn't get what you pay for, unless one pays again.
He who is in me is greater than he who is in the world.
-
- Guru
- Posts: 4161
- Joined: Sun Jan 29, 2006 9:46 pm
- Location: Lund in Sweden
- Contact:
Re: Will this make 500 hp ?
Isn´t the runner area in the Performer RPM intake much smaller than the runner area in the 200cc heads?
Erland
Erland
Re: Will this make 500 hp ?
Nothing. But with $100 worth of tools (in addition to normal home mechanic tools) I can....
1. dis-assemble heads
2. lap valves and check for proper concentricity/seating
3. check guides
4. hone guides if needed
5. check installed spring height
6. remove casting flashing
7. check torque of rocker studs
8. probably a few other things I'm missing
Re: Will this make 500 hp ?
Sort of, #2. Lapping valves in is great but it wont really tell you how concentric the seat is. If you have .002” guide clearance and the seat is .0015” out of round it will still lap in ok. Seat concentricity guage needed to really know. #3 and #4 to accurately measure the guides you need the sunnen fixture. ($2000). And a sunnen hone all to properly hone guides within .0002” from top to bottom. ($750)
-
- Guru
- Posts: 1608
- Joined: Sat Dec 24, 2011 10:02 am
- Location: melfort saskatchewan Canada
Re: Will this make 500 hp ?
Ok guys thanks for the input. In my experience i've taken dozens of sets of Edelbrock and AFR heads out of the box and put them on a motor and i've yet to have a failure. Were they as good as the could be ? Who knows, maybe not. I pulled a dart SHP SBC head out of the box and found one rocker stud was simply missing. I'm not a big builder so i don't have the experience many others do. I generally build one or two engines a year not including my own stuff. I'm not a machine shop either. More like a general contractor. This motor should be running tomorrow night shortly after the pushrods show up.
Brian
Brian
The Word of God is quick and powerfull
www.therocketshop.blogspot.com
www.therocketshop.blogspot.com
Re: Will this make 500 hp ?
Just to clarify; outright failures are very uncommon but giving away gobs of horsepower because of crappy prep and mismatch of proper hardware is the issue. Anybody can throw together an engine and make it run but making a much better piece using the same basic components can be as simple as personally checking to make sure you weren't handed poorly prepped parts. Cylinder heads are where you can gain or lose the most in any performance application IMO.