pro comp heads
Le Mans Master
Joined: Oct 2010
Posts: 6,922
Likes: 839
From: melbourne florida
2023 C3 of the Year Finalist - Modified
i have heard the newer patriots are made in the same foundry as the pro- comps. i will say it again , i would never take a set of anyones heads out of a box and bolt them on. i don't care if it is dart afr or anyone else's. and i don't buy assembled heads unless i know who put them together AND have faith in their work. the first time you have a retainer or valve let go at 8k rpms at over 130 m.p.h let go you WILL know why. even the same thing happening at 3k rpms on the street you will understand why you check. it can and does happen no mater how much or how little you spend. nothing will destroy an engine quicker. but then, what does a guy running pro- comps know
Drifting
Joined: Jul 2013
Posts: 1,299
Likes: 93
From: Tri-Cities TN
i have heard the newer patriots are made in the same foundry as the pro- comps. i will say it again , i would never take a set of anyones heads out of a box and bolt them on. i don't care if it is dart afr or anyone else's. and i don't buy assembled heads unless i know who put them together AND have faith in their work. the first time you have a retainer or valve let go at 8k rpms at over 130 m.p.h let go you WILL know why. even the same thing happening at 3k rpms on the street you will understand why you check. it can and does happen no mater how much or how little you spend. nothing will destroy an engine quicker. but then, what does a guy running pro- comps know
Safety Car
Joined: Jan 2009
Posts: 3,736
Likes: 56
From: anchorage ak
i have heard the newer patriots are made in the same foundry as the pro- comps. i will say it again , i would never take a set of anyones heads out of a box and bolt them on. i don't care if it is dart afr or anyone else's. and i don't buy assembled heads unless i know who put them together AND have faith in their work. the first time you have a retainer or valve let go at 8k rpms at over 130 m.p.h let go you WILL know why. even the same thing happening at 3k rpms on the street you will understand why you check. it can and does happen no mater how much or how little you spend. nothing will destroy an engine quicker. but then, what does a guy running pro- comps know
Safety Car
Joined: Jan 2008
Posts: 3,791
Likes: 428
From: Aarhus, Denmark
I bought Pro Comps 190 heads bare, and have them made so they fit my engine. I've ordered 2.05 valves, instead of 2.02
Does anyone know what heat range of spark plug I must buy?
Here is my heads, the same guy also have my intake and headers. He is grinding/cutting from the throttle body to the exhaust.
Does anyone know what heat range of spark plug I must buy?
Here is my heads, the same guy also have my intake and headers. He is grinding/cutting from the throttle body to the exhaust.
Burning Brakes
Joined: Aug 2007
Posts: 892
Likes: 243
From: Green Valley Ca
I bought Pro Comps 190 heads bare, and have them made so they fit my engine. I've ordered 2.05 valves, instead of 2.02
Does anyone know what heat range of spark plug I must buy?
Here is my heads, the same guy also have my intake and headers. He is grinding/cutting from the throttle body to the exhaust.
ProComp 190cc Stage IV "Denmark Duo" Chambers 4.5 Final Rough Cut - YouTube
Does anyone know what heat range of spark plug I must buy?
Here is my heads, the same guy also have my intake and headers. He is grinding/cutting from the throttle body to the exhaust.
ProComp 190cc Stage IV "Denmark Duo" Chambers 4.5 Final Rough Cut - YouTube
Bob
Advanced
Joined: Dec 2013
Posts: 73
Likes: 0
My Skip White NKB heads just shipped today so I can't vouch for them yet, they are 2.02, 1.6; 64 cc; with 200 cc intake runners and I got them for 645$. Really the only reason I went with them over the others was the 3 yr warranty, which I hadn't seen with the other "cheap" heads. (What was that Tommy Boy's dad said about guarantees?) Couldn't justify the 1K+ for heads on my budget. Some people have large amounts of dispensable income and some don't. I don't so I try to save a bit here and there to achieve my objective. I'll let you know when I get them.
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Le Mans Master
Joined: Oct 2010
Posts: 6,922
Likes: 839
From: melbourne florida
2023 C3 of the Year Finalist - Modified
I bought Pro Comps 190 heads bare, and have them made so they fit my engine. I've ordered 2.05 valves, instead of 2.02
Does anyone know what heat range of spark plug I must buy?
Here is my heads, the same guy also have my intake and headers. He is grinding/cutting from the throttle body to the exhaust.
ProComp 190cc Stage IV "Denmark Duo" Chambers 4.5 Final Rough Cut - YouTube
Does anyone know what heat range of spark plug I must buy?
Here is my heads, the same guy also have my intake and headers. He is grinding/cutting from the throttle body to the exhaust.
ProComp 190cc Stage IV "Denmark Duo" Chambers 4.5 Final Rough Cut - YouTube
Le Mans Master
Joined: Oct 2010
Posts: 6,922
Likes: 839
From: melbourne florida
2023 C3 of the Year Finalist - Modified
What you have heard is 100% wrong on the Patriot/Pro Comp connection. Patriot was a division of ACHC. They were and still are one of the large suppliers in aftermarket casting to the production engine rebuilders. Their castings had to meet or exceed OEM specificiations including some applications used by the Military. They do heads and do them well. Companies that do everything usually don't do anything real well.
Advanced
Joined: May 2012
Posts: 97
Likes: 0
IMO, they are okay heads. I have them on my 383 that I ordered from Skip White Performance. But the hardware is not Pro Comp, just the heads themselves. I read that the weakest stuff is the hardware. But do what you think is best. I have seen badly made afr heads before, can't let a bad apple spoil the bunch though, but either way do what you think is best.
I personally do plan on replacing my pro-comp heads for maybe darts. Only if it's even worth it hp wise. Want a bigger cam. The pro-comp heads can be made to be reliable. Just not from the factory (From what I hear anyway). If you do plan on racing all the time. Make sure they are well built with good hardware instead of the crap they usually come with (again from what I've seen and read), or buy from a company that is "known" for good results. AFR, Darts, etc etc.
A lot of the posts here are informational. Some might be false. Either way best of luck
.
I personally do plan on replacing my pro-comp heads for maybe darts. Only if it's even worth it hp wise. Want a bigger cam
. The pro-comp heads can be made to be reliable. Just not from the factory (From what I hear anyway). If you do plan on racing all the time. Make sure they are well built with good hardware instead of the crap they usually come with (again from what I've seen and read), or buy from a company that is "known" for good results. AFR, Darts, etc etc.A lot of the posts here are informational. Some might be false. Either way best of luck
.
Last edited by Blazekillerace; Jan 30, 2014 at 09:26 PM.
Race Director
Joined: May 2005
Posts: 10,674
Likes: 122
From: Millington Illinois
St. Jude Donor '08-'09
I bought Pro Comps 190 heads bare, and have them made so they fit my engine. I've ordered 2.05 valves, instead of 2.02
Does anyone know what heat range of spark plug I must buy?
Here is my heads, the same guy also have my intake and headers. He is grinding/cutting from the throttle body to the exhaust.
ProComp 190cc Stage IV "Denmark Duo" Chambers 4.5 Final Rough Cut - YouTube
Does anyone know what heat range of spark plug I must buy?
Here is my heads, the same guy also have my intake and headers. He is grinding/cutting from the throttle body to the exhaust.
ProComp 190cc Stage IV "Denmark Duo" Chambers 4.5 Final Rough Cut - YouTube
Drifting
Joined: Oct 2012
Posts: 1,524
Likes: 61
From: Medina Ohio
From the bit of research I've done, and I'm not as knowledgeable as a few of the others that have posted thus far, but these seem to be the best heads for around the $1000 mark. From what I've heard they are on par with AFRs.
http://www.profilerperformance.com/r.../sbc-23-degree
http://www.profilerperformance.com/r.../sbc-23-degree
Le Mans Master
Joined: Oct 2010
Posts: 6,922
Likes: 839
From: melbourne florida
2023 C3 of the Year Finalist - Modified
everything on the internet has to be right, doesn't it?
i know a lot of drag racers and street guys that run them with no problem, i will take their word over google anyway.
as long as someone competent goes thru them and install good components.
i know a lot of drag racers and street guys that run them with no problem, i will take their word over google anyway.
as long as someone competent goes thru them and install good components.