 Picked up a set of CH SB Aluminum heads today, What are they? |
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| dkjens |
 Jan 31 2009, 08:23 PM
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Member  Group: Members Posts: 159 Joined: 24-November 08 From: Pasadena, CA Member No.: 9,785 Region Association: None  |
I picked up a bare set of aluminum heads today, only have valve guides and seats installed. One of them is ported to the max, the other virgin. They have holes for regular valve covers and center bolt valve covers. They have seats for 2.02" and 1.60" valves. The burn chamber is heart shaped. There are no brands stamped anywhere. On the outside right under the valve cover lip they each have a sequence engraved: PC 3003-0712-0851 and PC 3003-0714-0858. Also on the raw part next to the machined intake ports side, one has the numbers 712 18S, the other 712 21.
I have a feeling they are Edelbrock heads but not sure. I could call Edelbrock on Monday and see if the PC sequences are some kind of serial numbers. Any help here is greatly appreciated. Jens |
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| byndbad914 |
Feb 2 2009, 10:51 PM
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shoehorn and some butter - it fits Group: Members Posts: 1,547 Joined: 23-January 06 From: Broomfield, CO Member No.: 5,463 Region Association: None |
get the fully ported AFR heads if you are shooting for 500HP. The 210s with 295cfm at 0.600" lift will make 550HP no problem, depending on cam lift you might want to consider the 301cfm port job for .550" lift or less... I don't know the overall difference in price and IIRC last time I messed with these they only had the 295cfm head.
I have cleared 500HP with the 295 heads on crappy CA oxygenated pump gas with a solid tappet cam and hyd roller. If you go solid roller get the big'uns for sure to take advantage of the high lift flow. My Canfields flow 305 at 0.600" lift and if I added 12:1 compression to my engine instead of 10.6:1 I would be close to 600HP with the tappet cam (for reference) on a 4.125" bore. IIRC I have a 2.08" valve, maybe 2.10". Oh yeah, be VERY careful looking at flow #s - I just noticed the larger flow head is flowed on a 4.125" bore, that will pick up a few cfm right there and why I am at 305cfm for instance. If you use a 4" bore 350 block I bet you would want to stay with the smaller head - they may have opened the chamber back on the big head to unshroud the valve, but then you need a 4.125" bore/gasket to use that. The 295 head is more than sufficient anyway. |
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Posts in this topic
dkjens Picked up a set of CH SB Aluminum heads today Jan 31 2009, 08:23 PM
ericread Pictures man! We need pictures!!... Jan 31 2009, 08:55 PM messix like these? http://store.summitracing.com/largeima... Feb 1 2009, 04:23 AM dkjens Here are pictures. Notice the extra holes on the i... Feb 1 2009, 11:29 AM dkjens More pics. Notice the sequence engraved on the hea... Feb 1 2009, 11:31 AM Sleepin ... Feb 1 2009, 12:10 PM Sleepin Looks like they are Pro-Comp 210cc intake runner h... Feb 1 2009, 12:25 PM sixnotfour Pro Comp made australia search ebay
http://cgi.e... Feb 1 2009, 12:29 PM Sleepin Here is a 3003 series 210cc runner on ebay: http:/... Feb 1 2009, 12:33 PM dkjens Yep, looks to be the 3003 210cc runner at only ... Feb 1 2009, 01:02 PM byndbad914 If they are Pro Comp I know the guy that casts the... Feb 1 2009, 02:44 PM dkjens Well, found out that by the time porting and match... Feb 1 2009, 09:26 PM
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