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Old 05-13-2011, 01:01 AM   #1
weaz4200
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Default Head choice for mild 383 build

I wanted to hear your guys's opinions between 2 heads. The RHS vortec heads and the Patriot Performance vortec heads. I'd like to build a 383 for my 92 Camaro, daily driver. The cam I plan on using is a Bullet cam (2-6K range). So far everything is stock (coverter/rear gear), but will be upgraded. Which one would you choose? Thanks.
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Old 05-13-2011, 01:37 AM   #2
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Default Re: Head choice for mild 383 build

RHS
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Old 05-13-2011, 02:34 AM   #3
weaz4200
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Default Re: Head choice for mild 383 build

Can you elaborate as to why you choose RHS over Patriot? Is that decision purely based on casting or the components used in the head,etc?
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Old 05-13-2011, 03:25 AM   #4
russ67chevelle
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Default Re: Head choice for mild 383 build

do some research....people like rhs stuff....mixed signs with patriot
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Old 05-13-2011, 03:34 AM   #5
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Default Re: Head choice for mild 383 build

RHS indeed. RHS owned by COMP, the quality control is very good with them. Have a few customers who have used them and are quite happy.
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Old 05-13-2011, 04:05 AM   #6
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Default Re: Head choice for mild 383 build

Quote:
mixed signs with patriot
Yea, I've read a few things but nothing about any current issues. I think the last post I saw was here on YB, but that was from 08. I figured maybe the QC may have improved.

Quote:
do some research....people like rhs stuff....
I've actually been researching for well over 2 years now... Not for this build necessarily but in general. I've seen many reviews on the RHS heads, it's more so I'm trying to figure out whether it's the right choice (specs wise) I can never seem to find any info that helps me understand part selection. Either it's guys just picking parts without understanding all the variables and going through trial and error, only to later go and bash good products cause their combo was all wrong .... Or it's some of the stuff I've seen explained here on YB that's just way over my head, at least for now based on my current skill level. I've had guys tell me to use a 180cc head and some say 200cc's. Now i"m not saying either are wrong, just saying that with a 20cc difference between heads all heads in that range can't be optimal.

Quote:
RHS indeed...
That's what I was leaning towards, just wanted to see what you guys thought. Maybe you can shed some light on this for me. I've seen charts and info about what size runners are recommended but then I've read plenty of times that a 180cc head can outperform a 200cc head. So I'm curious, how does someone decide what their combo calls for?
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Old 05-13-2011, 04:12 AM   #7
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Default Re: Head choice for mild 383 build

IT really depends on on what your doing. The 180cc from them would be a street machine torque monster, but the 200ccs might be better suited if you want more higher RPM HP.

For a DD, the 180s would prob probably have power in the range you'll spend most of your time in.

IF you havent picked them up yet, PM me and I can get you some prices, Im a dealer with RHS and can save you some cash.

Mike
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Old 05-13-2011, 06:00 AM   #8
russ67chevelle
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Default Re: Head choice for mild 383 build

if your only looking at going 6k rpms with 383 cubes, id stick with 180cc....i have a 406 in my truck and it pulls real nice with vortec 170cc w/clean up
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Old 05-13-2011, 11:15 AM   #9
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Default Re: Head choice for mild 383 build

Friend has a 383 roller cam motor with Dart Iron Eagle Platinums 200cc. It runs real good
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Old 05-13-2011, 11:25 AM   #10
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Default Re: Head choice for mild 383 build

i have 2 383 motor one has world heads an the other has dart iron.i like them both but one set has to go i am going to try PRO-FILERS HEADS.IS AMERICAN MADE FROM START 2FINISH.it is a bad 2 the bone head.
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Old 05-13-2011, 01:44 PM   #11
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Default Re: Head choice for mild 383 build

I own the Profiler 210 cc and they are very nice, and very reasonable... they flow as much as AFR's, and about 300.00 less $$$$

the 195cc would be very nice on that engine... http://www.speierracingheads.com/profilerecono.htm
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Old 05-14-2011, 03:18 AM   #12
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Default Re: Head choice for mild 383 build

Quote:
Friend has a 383 roller cam motor with Dart Iron Eagle Platinums 200cc. It runs real good
Is it in a daily driver?
Quote:
PRO-FILERS HEADS.IS AMERICAN MADE FROM START 2FINISH.it is a bad 2 the bone head.
Thanks for the info, maybe for future builds.
Quote:
if your only looking at going 6k rpms with 383 cubes, id stick with 180cc....
Thanks for the heads up. (no pun intended)
Quote:
IT really depends on on what your doing. The 180cc from them would be a street machine torque monster, but the 200ccs might be better suited if you want more higher RPM HP. For a DD, the 180s would prob probably have power in the range you'll spend most of your time in.
See now that's were I'm curious... What rpm range does the 180cc put me in vs the 200cc? Here's something else I'm curious to know.... Is there a way to match heads to a cam and vice versa? If so how? I know it'd be more noticeable in a race application vs a DD, but I was just wondering. For example, a 350 with a 1500-5500 cam and a 180cc head. Now keep everything the same except now a 383. I don't understand how with the added 33 cubes you wouldn't want a bigger head. I'd assume when going up in CID using a 180cc head, sooner or later that runner size would be too small and become a restriction (still using a 1500-5500 cam). Correct me if I'm wrong or just talking out my a**.
Thanks.
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Old 05-14-2011, 07:36 AM   #13
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Default Re: Head choice for mild 383 build

Yes. My friends drives his all the time. He's in the AirForce down in Phoenix, so its gettin driven in the heat too. Im pretty sure its got the Comp cam xr288hr cam in it.

Here's a little video.
http://www.youtube.com/watch?v=b8qoE..._order&list=UL
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Old 05-14-2011, 10:01 AM   #14
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Default Re: Head choice for mild 383 build

Quote:
Originally Posted by russ67chevelle View Post
if your only looking at going 6k rpms with 383 cubes, id stick with 180cc....i have a 406 in my truck and it pulls real nice with vortec 170cc w/clean up
We have built and worked with a couple of customers that have used 180's on there 383's and they seem to have a ton torque on the low end and mid range.

But here is one we built years ago with the AFR 195's
http://www.chevelles.com/forums/showthread.php?t=106715

Last edited by CNC BLOCKS; 05-14-2011 at 10:02 AM.
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Old 05-14-2011, 10:12 AM   #15
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Default Re: Head choice for mild 383 build

what about some track1's
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