Considering different heads.
11-01-2007, 04:36 AM
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Considering different heads. I have a set of rhs heads on my zz4 and I would like a little more compression so I want to swap the heads out. The heads flow great but they are 76cc chambers which prolly puts me at 8.5:1 cr. I really want to run a little more cam and have some more power, I think bumping the cr would do it for me. My question is: Im considering vortecs and I am curious if I might lose a lil power due to the drop in flow from my current heads? What have you guys seen box-stock l31s make? I would like to put 400whp out and I just dont know if the vortecs would do it, I have a t-56 so around 440-450fwhp would prolly put me at my goal. Help me out guys, I wanna go faster!!! I got pulled by a h/c ls1 tonight and it really irritated me.
11-01-2007, 10:51 AM
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Why not go with another set of RHS heads? Then you wouldn't have to give up your flow number's. This set of heads would work great in your application I think, as they give you room to grow with porting that could be done to them. They would also give you tremendous low end torque with the smaller 180cc intake runners but not kill your top end with your zz4 motor. http://www.compperformancegroupstore...y_Code=SBC_180
http://www.jegs.com/webapp/wcs/store...0002_806584_-1
http://www.jegs.com/webapp/wcs/store...0002_806584_-1
11-01-2007, 11:01 AM
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I dont think a set of vortecs would help you, even with extensive porting. I think the large port vortecs would help a bit, but that too would require allot of porting. Just get some aliminum 195cc AFRs, then see where you go, and you will save 40 LBS too.
11-01-2007, 03:37 PM
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Im trying to spend as little money as possible. I have a set of Canfields but they are a 220cc head and they flow like 320cfm, I may just put those on but Im afraid they would kill my low-end. It would be badass if I could trade my rhs heads for another set but with smaller combustion chambers.
11-01-2007, 06:04 PM
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get a set of 200cc Dart Iron Eagle Platinums, and call up the cam manufacturer of your choice with all the specs of the motor and car, and they'll get the best cam for you.
This recipe will take care of those pesky ls1 cars haha
This recipe will take care of those pesky ls1 cars haha
11-01-2007, 07:34 PM
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Im trying to spend as little money as possible. I have a set of Canfields but they are a 220cc head and they flow like 320cfm, I may just put those on but Im afraid they would kill my low-end. It would be badass if I could trade my rhs heads for another set but with smaller combustion chambers.
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11-01-2007, 10:39 PM
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If they were milled that far the valve angle would be changed and the intake would have to be reworked negating the cost efficiency. I may sell the canfields though, they were $1,000 brand new and have some minor port work done so I should be able to get some money from them. If I sell the rhs heads also I might be able to get some really nice stuff. Anyone wanna trade for or buy my heads?
11-02-2007, 05:12 AM
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Choices You go with a pro lighting head there a very good head and have a good price. You can find those on enginekits.com. Also patriot has some heads they're also decent. Last a set of gutted camel humps with bigger valves.
11-02-2007, 09:55 AM
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Yeah that's true, but I guess it depends on how far you wanted to bump your compression. 1 point of compression is about .006 thousands per RHS, which would probably be as far as I would go. Sounds like selling both sets of heads is the way to go.
11-02-2007, 10:09 AM
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I do beleive that is with the LSx series heads only (As for dyno #'s, they are just about the same for track results). From the results I have had, the Trick Flow heads are are no where close to the AFR heads on a Gen 1 SBC. I would choose a Dart Pro 1 Platinum or the RHS Pro Action aluminum heads over those Trick Flow's.
11-02-2007, 10:13 AM
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Give us a call. We offer several different options on SBC heads. Our prices start at $795.00 for a pair of our assembled CNC bowl blended and gasket matched 190cc runner heads.
11-02-2007, 11:18 AM
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I do beleive that is with the LSx series heads only (As for dyno #'s, they are just about the same for track results). From the results I have had, the Trick Flow heads are are no where close to the AFR heads on a Gen 1 SBC. I would choose a Dart Pro 1 Platinum or the RHS Pro Action aluminum heads over those Trick Flow's.
Yea J, my heads are doing fine, i think i shoulds cut the intake gasket out to match the ports when i put it together but i didnt, i will have my 4 inch cowl today, my Dana 44 rear sunday at the latest, then i need a X member for my 6 speed swap. Once all that is done i will dyno the car and take it to the track to see where she stands.
12-19-2007, 09:59 PM
#20
Dart Pro 1 Platinum 200s.
They don't flow worth a **** on the bench, but it was designed using wet flow... so it makes horsepower. And that's what matters. $1300 or so assembled or $1000 for the Iron Eagles.
Patriots are also nice for the money.
They don't flow worth a **** on the bench, but it was designed using wet flow... so it makes horsepower. And that's what matters. $1300 or so assembled or $1000 for the Iron Eagles.
Patriots are also nice for the money.
