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I recently bought a set of pro topline heads and I cant find much info on the casting numbers that are on the heads, hope someone can help me here are the numbers :2235000 00 260 10 02 any info would be appreciated, trying to find out exactly what I have.. thanks
this company was sold i think now is part of RHS many of the old stock was sold out .pro topline is the real deal head that many get mixed up with pro comp. not the same ..from what i have it looks like that head is a SBC iron 220 cc runner 50 cc chamber valves 202 0&1.60 this may or may not be right . but should be very easy to verify by cc port runner and the chamber if you have valve sQuote:
Originally Posted by bendougcarl
awesome thanks for the info, in your opinion are they a decent set of heads to put some money into...
Sounds like a serious race head to me. Big runners, big static compression ratio. (over 12.0:1 with a flat-top piston). What would I do? I'd cc them to be certain of what I had before I would go any farther. Here's a cc burette kit that is affordable......
http://www.summitracing.com/parts/sum-911581/overview/
Pat, I think RHS has gone out of business. The last of their heads are being marketed by CompCams, who I think was the parent company of RHS.
Comp Cams 12403 Pro Torker Small Block Cylinder Head : Amazon.com : Automotive
Sorry, duplicate post.
serious race head??... my plan was to take them to a shop to be hot tanked, and gone over and to see exactly what I have.. then put them on my 84 k20 pick up... has a 383 stock heads flat tops, with comp cams xtreme energy, lift .520/.523 duration 274/286, headers, holley 670 avenger...my question would be, could I put these on this motor, and see an improvement? and still use 89 octane? is there such thing as too much head?? haha
yes RHS is part of comp dealler for there lineQuote:
Originally Posted by techinspector1
too much head can cause throat cancer(according to recent study and some Hollywood actor)altho it might improve torque
Sorry, duplicate post.
Yes, there is such a thing as too much head and you have found it. Those heads with flat-top pistons will make 12.0:1 in a 355 and 13.0:1 in a 383. The large 220cc intake runners will want more revs in a 383 to move enough air to create sufficient velocity to pack the cylinders properly, figure 7000/7500. Those revs will require a more expensive valvetrain, more rear gear and a looser converter, as well as more cam than what you presently have.Quote:
Originally Posted by bendougcarl
In the name of common sense, sell these turds and buy some heads with 75/76cc chambers and 200cc intake runners that will operate on the street with pump gas. 75/76cc chambers with the pistons you have now will make 9.6:1/9.7:1 static compression ratio, compatible with pump gas and your present cam.
Hmmm... not quite what I read a minute ago... rofl..
What? About the flat tappet cam, a steaming pile of poo? I just get tired of trying to educate these lads, so when my computer lurched into the posting mode and I had to re-write it, I just changed the verbage to reflect a sweeter, softer, kinder, more understanding techinspector1. :eek:Quote:
Originally Posted by 34_40
I'm writing this on a Samsung Chromebook and if you swipe your hand accidentally across the pad, the computer takes that as meaning to post, whether or not you are through typing. That's when I have to label the post....Sorry, duplicate post.
I'll admit that when I read you're "original" post it got my nose out of joint.. I asked myself where's the "kinder", "gentler" Techinspector?? :eek::LOL:Quote:
Originally Posted by techinspector1
I was going to reply but I had to go elsewhere and let me lose my attitude. :eek: I understand you're position and having to repeat the same info over and over, especially when folks are still thinking like it's 1971! :eek:
I know what you mean about the computer too! I'm on a Dell laptop with a touchpad right in the center, hit it, even accidentaly, and who know's where you're post went! :mad:
In any event, thanks for the re-write, If nothing else, I thought you should know at least someone does appreciate you're kinder / gentler approach. :)
I guess it would depend on your definition of "street use"!! If it means a 4500 stall or a G-Force 5 speed, Lenco, or the like and you have an engine and drivetrain capable of doing 8,000 RPM shifts you have way too much head!!!! A set of out-of-the-box Performer RPM or equivalent are more then adequate for street use!!!
You could sell them to one of the guys who run the big, lopey cams on the street and they could really wow the troops at Sonic!!!!!:LOL::LOL::LOL:
Haha. Ok thanks for all the info