You are currently viewing our boards as a guest which gives you limited accessClick here to join our free community and you will recieve full access to everything.

If you are a member please sign in, and this message will go away


Go Back   TriFive.com, 1955 Chevy 1956 chevy 1957 Chevy Forum , Talk about your 55 chevy 56 chevy 57 chevy - Belair , 210, 150 sedans , Nomads and Trucks, Research, Free Tech Advice > Hi Performance & Racing > Engine Building, Hi Performance
User Name
Password
Register FAQ Top Posters Mobile Members Search Today's Posts Mark Forums Read
HomePage Todays Post Mark Forums Read upcoming Events
Trifive Hats Shirts Newsletter Trifive Calendar 55-56-57 Chevy Parts & Services Official Sponsors
Photo Gallery Garage Photos Trifive Classifieds Trifive on Facebook Calendar Tech Articles Arcade Oldies vBRadio
Trifive Cards Car Certificate Trifive Brochure Backgrounds/WallPaper Help with Photos Website Help Videos Contact Us

Engine Building, Hi Performance Please tell us about your engine builds. What component combos and horsepower output. Let's help each other build better faster engines. Ask or answer questions.

Parts on Ebay            

Somernites Special Trifive Cruise Oct 25, 26   2014, Somerset, Ky  Click Here for More Information

Reply
 
Thread Tools Display Modes
Old 07-16-2012, 08:53 PM   #1
55chevylover
Member
 

Join Date: Aug 2007
Location: VA.
Posts: 42
Member #3486
Default engines

I have a small block that was used in 1967 only. I am pretty sure it is a 327 with double hump heads. what is it worth? thanks
__________________
Daniel
55chevylover is offline   Reply With Quote
Old 07-16-2012, 09:04 PM   #2
mickeywestsr

Trifive Leaders Club

 
mickeywestsr's Avatar
 

Join Date: Feb 2007
Location: Chattanooga, Tennessee
Posts: 40,300
Member #1970
Thumbs up

Thats the engine I had in my 67 Malibu.....it was really good. I'd just as soon have it as my 350.....

__________________

GO VOLS
COWBOY
mickeywestsr is offline   Reply With Quote
Old 07-17-2012, 05:38 AM   #3
angs1957
Super Moderator
 
angs1957's Avatar
 

Join Date: Mar 2007
Location: Australia
Posts: 37,910
Member #2237
Default

Post some engine numbers, somebody will verify
angs1957 is offline   Reply With Quote
Old 07-17-2012, 08:55 AM   #4
rayharris
Senior Member 3 Gold Stars
 
rayharris's Avatar
 

Join Date: Dec 2010
Location: Moody Al
Posts: 3,575
Member #16151
Default

I think the heads are worth at least 300 each.
__________________
Ray
"The difference between men and boys is the price of their toys."
rayharris is offline   Reply With Quote
Old 07-17-2012, 09:15 AM   #5
Original Pete

Trifive Leaders Club

 
Original Pete's Avatar
 

Join Date: Jul 2009
Location: Perth, Australia
Posts: 11,905
Member #9403
Default

Jut the double hump heads would be worth a pretty penny without hearing what the other ID numbers are. Those 327's really can get up and go.
__________________
If you can't be handsome at least you should be handy.

57 Nomad need everything but the stainless.
Original Pete is offline   Reply With Quote
Old 07-17-2012, 09:35 AM   #6
CNC BLOCKS
Senior Member 1 Silver Star
 
CNC BLOCKS's Avatar
 

Join Date: Mar 2009
Location: NORHTEAST
Posts: 729
Member #8359
Default

Quote:
Originally Posted by Original Pete View Post
Jut the double hump heads would be worth a pretty penny without hearing what the other ID numbers are. Those 327's really can get up and go.
I have about 20 sets of double hump heads I don't think they are worth that much. They need guides, Valves, Valve springs Harden exhaust seats ETC. some time you get into the water jackets and you end up with junk.

I can buy NEW Vortecs for 625.00 and bolt them on and they work better then any double hump that I have seen.

If some is looking for a matching numbers heads that maybe a different story!!
CNC BLOCKS is online now   Reply With Quote
Old 07-17-2012, 09:50 AM   #7
USA1

Trifive Leaders Club

 

Join Date: Nov 2008
Posts: 5,610
Member #6974
Default

Quote:
Originally Posted by CNC BLOCKS View Post
I have about 20 sets of double hump heads I don't think they are worth that much. They need guides, Valves, Valve springs Harden exhaust seats ETC. some time you get into the water jackets and you end up with junk.

I can buy NEW Vortecs for 625.00 and bolt them on and they work better then any double hump that I have seen.

If some is looking for a matching numbers heads that maybe a different story!!
If you like ugly moters go ahead and dump the humps. When I was young I had to use old @#^% , now I use it because its cool. The funny thing is I still go faster than some of the guys with the latest and greatest.

As much as I like them Camel Humps are not worth that much, I have never paid over 50 dollars for a pair.

Last edited by USA1; 07-17-2012 at 09:52 AM..
USA1 is offline   Reply With Quote
Old 07-17-2012, 10:20 AM   #8
Fiddy5Coupe
Senior Member 2 Gold Stars
 
Fiddy5Coupe's Avatar
 

Join Date: Jul 2007
Location: Seward, Nebraska
Posts: 2,832
Member #3076
Default

Here's some casting numbers from an article I read



To the average Hot Rodder who knows a lot to very little about Chevy small block engines, this may sound like some kind of perverted question, but if you are engaged in a discussion of Chevy performance parts from several years back, here are some useful facts that will help make you a knowledgeable standout and savy authority.

In addition to using casting numbers wich are found on the top side or valve spring side of the head under the valve cover, Chevy also casts into the end surface of small block cylinder heas a raised identifying mark. Over the past several years, these raised casting marks have ranged from triangle shapes to unusual "stepped" symbols to squares and the famous "DOUBLE HUMP". these heads bearing this symbol were high performance, high flowing, big valve, small comustion chambered designs that have been sought out since the introducton of the fuel injected 327 cubic engine in 1962; many an hour has been spent in junkyards looking for the double humps.

These heads are still used today, but there are a few things to know even if you are building a nostalgia small block for street use. Heads with casting numbers 3990462, 3990461, 3917291, 3991492 and 3927186 all had the double hump marking but had features that need to be considered. The "461" casting number (last 3 numbers in the casting number) heads would be a problem if used today due to no accessory mounting holes being drilled in the ends of the heads for such tings as alternator and A.C. mounting brackets. The other castings had this provision. The combustion chambers range from 62 cc's to 64 cc's on all these heads which makes using pistons with "flat tops" difficult without detonation on todays pump gas due to the high compression ratio that is created. They can be used successfully, but with a dished piston. All the heads will have 2.02 inch or 1.94 inch intake valves and 1.60 inch or 1.50 inch exhaust valves depending on the year and application. Smaller valves will give good, crisp trottle response, but the bigger valves work better at higher RPM due to the increased flow.

These heads are by far NOT the higest performance heads from Chevrolet. The turbo head which was introduced in 1980 and the so-called bow-tie head introduced about the same time are arguably two of the best small block heads ever produced for service use in that era. Today the "fast-burn" aluminum heads with twisted wedge combustion chambers and big valves are very efficient and are widely used in high performance applications for producing incredible horsepower.

So, in conclusion, the old double hump heads have over the years worked well, especially when pump gas was n the 100 octane range. But, today, a lot of tings need to be considered if they are to be used without sacrificing driveability and performance.
Fiddy5Coupe is online now   Reply With Quote
Old 07-17-2012, 10:43 AM   #9
old school 55
Senior Member 1 Blue Star
 

Join Date: Dec 2006
Location: kansas city
Posts: 382
Member #1571
Send a message via Yahoo to old school 55
Default have to get more info. from block.

My son just paid 500.00 for a period correct block for his 67 Camaro on ebay it is a small journal 327 with no internals or heads, if you find the right buyer it could be worth alot. if it is running even more.
old school 55 is offline   Reply With Quote
Old 07-17-2012, 11:15 AM   #10
markm
Senior Member 2 Gold Stars
 

Join Date: Jan 2011
Location: kansas
Posts: 2,030
Member #16900
Default

I have a std bore 300 hp 327 block for a 62/63 and people think I am too high at $200. I also have the 46? heads and cannot find a buyer for them.
markm is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 12:14 PM.

Click here to see our full list of sponsors for all your Parts and Restoration Needs

Privacy Policy
www.trifive.com/privacy.htm

Websites
www.tri-5.com www.tri-fives.com www.trifive.com

Powered by vBulletin
Copyright 2000-2009 Jelsoft Enterprises Limited.
1957 CHEVROLET BEL AIR Information, 1957 CHEVROLET BEL AIR Specifications, 1957 CHEVROLET BEL AIR Resources, 1957 CHEVROLET BEL AIR Pictures, 1957 CHEVROLET 55 chevy 56 chevy 57 chevy 1955 55 chevy pictures 55 chevy parts 55 chevy truck 55 chevy pickup 55 chevy nomad 55 chevy gasser 55 chevy pro street 56 chevy pictures 56 chevy parts 56 chevy truck 56 chevy pickup 56 chevy nomad 56 chevy gasser 56 chevy pro street 57 chevy pictures 57 chevy parts 57 chevy truck 57 chevy pickup 57 chevy nomad 57 chevy gasser 57 chevy pro street 55 chevy photos 55 chevy parts 55 chevy truck 55 chevy pickup 55 chevy nomad 55 chevy gasser 55 chevy pro street 56 chevy photos 56 chevy parts 56 chevy truck 56 chevy pickup 56 chevy nomad 56 chevy gasser 56 chevy pro street 57 chevy photos 57 chevy parts 57 chevy truck 57 chevy pickup 57 chevy nomad 57 chevy gasser 57 chevy pro street 55 chevy 56 chevy 57 chevy 1955 Chevy 1956 Chevy 1957 Chevy Bel Air 210 150 and Nomad belair Tri-5 Tri-five Tri5 55 chevy 56 chevy 57 chevy 1955 Chevy 1956 Chevy 1957 Chevy Bel Air 210 150 and Nomad Tri-5 Tri-five belair Tri5 55 chevy 56 chevy 57 chevy 1955 Chevy 1956 Chevy 1957 Chevy Bel Air 210 150 and Nomad Tri-5 Tri-five Tri5 55 chevy 56 chevy 57 chevy 1955 Chevy 1956 Chevy 1957 Chevy Bel Air 210 150 and Nomad Tri-5 Tri-five Tri5 55 chevy 56 belair chevy 57 chevy 1955 Chevy 1956 Chevy 1957 Chevy Bel Air 210 150 and Nomad Tri-5 Tri-five Tri5 55 chevy 56 chevy belair 57 chevy 1955 Chevy belair 1956 Chevybelair 1957 Chevy Bel Air 210 150 and Nomad Tri-5 Tri-five Tri5 55 chevy 56 chevy belair 57 chevy 1955 Chevy 1956 Chevy 1957 Chevy Bel Air 210 150 and Nomad Tri-5 Tri-five Tri5 55 chevy 56 chevy 57 chevy 1955 Chevy 1956 Chevy 1957 Chevy Bel Air 210 150 and Nomad Tri-5 Tri-five Tri5 55 chevy 56 chevy 57 chevy 1955 Chevy 1956 Chevy 1957 Chevy Bel Air 210 150 and Nomad Tri-5 Tri-five Tri5 55 chevy 56 chevy 57 chevy 1955 Chevy 1956 Chevy 1957 Chevy Bel Air 210 150 and Nomad Tri-5 Tri-five belair Tri5 55 chevy 56 chevy 57 chevy 1955 Chevy 1956 Chevy 1957 Chevy Bel Air 210 150 and Nomad Tri-5 Tri-five Tri5 55 chevy 56 chevy 57 chevy 1955 Chevy belair 1956 Chevy 1957 Chevy Bel Air 210 150 and Nomad Tri-5 Tri-five Tri5 55 chevy 56 chevy 57 chevy 1955 Chevy belair 1956 Chevy 1957 Chevy Bel Air 210 150 and Nomad Tri-5 Tri-five Tri5 55 chevy 56 chevy 57 chevy 1955 Chevy 1956 Chevy 1957 Chevy Bel Air 210 150 and Nomad Tri-5 Tri-five 55chevy 55 chevy pictures 55 chevy parts 55 chevy truck 55 chevy pickup 57 chevy 55 chevy nomad 55 chevy gasser 55 chevy pro street Searches related to 57chevy 57 chevy pictures 57 chevy 57 chevy truck 57 chevy parts 57 chevy pickup 57 chevy nomad 1957 chevy Tri5