? for you guys that have been there done that with heads
#21
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It sounds like our goals were similar -- budget build for a rock solid street car that may spend a couple days a year at the track/road course.
I went with the PRC 5.3 Stage 2.5 heads and have been quite pleased. Is there more power out there on the table, absolutely. Are the PRC's the best out there on a budget -- even that's widely debateable.
That being said, I spent $1K on heads (to compliment the cam/intake/exhaust). Instead of investing $2,500 into the heads/rockers, I used the next $1,500 on a solid N2O setup.
Sure, there's a little N/A power left on the table, but there's an extra 100+ hp at the flip of a switch when I need it.
I went with the PRC 5.3 Stage 2.5 heads and have been quite pleased. Is there more power out there on the table, absolutely. Are the PRC's the best out there on a budget -- even that's widely debateable.
That being said, I spent $1K on heads (to compliment the cam/intake/exhaust). Instead of investing $2,500 into the heads/rockers, I used the next $1,500 on a solid N2O setup.
Sure, there's a little N/A power left on the table, but there's an extra 100+ hp at the flip of a switch when I need it.
#22
It sounds like our goals were similar -- budget build for a rock solid street car that may spend a couple days a year at the track/road course.
I went with the PRC 5.3 Stage 2.5 heads and have been quite pleased. Is there more power out there on the table, absolutely. Are the PRC's the best out there on a budget -- even that's widely debateable.
That being said, I spent $1K on heads (to compliment the cam/intake/exhaust). Instead of investing $2,500 into the heads/rockers, I used the next $1,500 on a solid N2O setup.
Sure, there's a little N/A power left on the table, but there's an extra 100+ hp at the flip of a switch when I need it.
I went with the PRC 5.3 Stage 2.5 heads and have been quite pleased. Is there more power out there on the table, absolutely. Are the PRC's the best out there on a budget -- even that's widely debateable.
That being said, I spent $1K on heads (to compliment the cam/intake/exhaust). Instead of investing $2,500 into the heads/rockers, I used the next $1,500 on a solid N2O setup.
Sure, there's a little N/A power left on the table, but there's an extra 100+ hp at the flip of a switch when I need it.
#23
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I don't agree on the roller rocker comment...I would rather have the stock rockers with reunion upgrade...to me the roller rockers aren't worth the money when it comes to HP/$...most rocker arm failures I see on this forum are aftermarket roller rockers, rarely do you see stock ones failing (which I'm sure has happened though)...not knocking roller rockers I just prefer the reliability of the stock GM ones, trunnions upgrade makes them even better....anyway let us know what you get man!
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I don't agree on the roller rocker comment...I would rather have the stock rockers with reunion upgrade...to me the roller rockers aren't worth the money when it comes to HP/$...most rocker arm failures I see on this forum are aftermarket roller rockers, rarely do you see stock ones failing (which I'm sure has happened though)...not knocking roller rockers I just prefer the reliability of the stock GM ones, trunnions upgrade makes them even better....anyway let us know what you get man!
#33
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My point has escaped you?
My point was that roller tip rockers are better than the stock ones. They keep the valve from deflecting as much as it does on the stockers by rolling across the top instead of rubbing.
It's like you only read 1 of my posts and you commented on it out of context or something.
#34
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My point has escaped you?
My point was that roller tip rockers are better than the stock ones. They keep the valve from deflecting as much as it does on the stockers by rolling across the top instead of rubbing.
It's like you only read 1 of my posts and you commented on it out of context or something.
My point was that roller tip rockers are better than the stock ones. They keep the valve from deflecting as much as it does on the stockers by rolling across the top instead of rubbing.
It's like you only read 1 of my posts and you commented on it out of context or something.
Saying that roller tip rockers are better than stock ones is like saying water is wet. I think anybody who's reading this thread and contemplating a set of performance heads already knows that.
#35
10 Second Club
iTrader: (1)
Yes you will. Dyno numbers mean what?? Nothing. I have had my last set of budget heads make close to the same power as my trickflow. Only gained a mear 10hp on the peak. I gained some under the curve and some tq as well. At the track i gained 3 tenths and my 60 foot was only a 1.55 when my best with the old heads was a 1.44. If my slicks were not worn,i could of gained 4 tenths just from better heads. Also,my old heads flowed more then the trickflow. so again,even flow numbers don't mean everything. I believe in you get what you pay for. people who have budget heads will disagree with my poast wanting to believe their heads are just as good as AFR or TRICKFLOW. I believe this to be wrong having also swapped a set of top sponsor's heads and adding AFR heads. again,with a great gain... goodluck to ya.
#36
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A sponsors 5.3 stage II's to TFS 220's only change on the 346 a couple years ago....
Edit: Good choice on the AI's OP. djfury05 has a set on a stock bottom car and it is a BEAST. I saw it run at Coastal Plains and it was trapping 122-123 IIRC no weight reduction. Search him in the dyno section and you will see what they are capable of....
Edit: Good choice on the AI's OP. djfury05 has a set on a stock bottom car and it is a BEAST. I saw it run at Coastal Plains and it was trapping 122-123 IIRC no weight reduction. Search him in the dyno section and you will see what they are capable of....
Last edited by SOMbitch; 02-15-2012 at 06:50 PM.
#37
A sponsors 5.3 stage II's to TFS 220's only change on the 346 a couple years ago....
Edit: Good choice on the AI's OP. djfury05 has a set on a stock bottom car and it is a BEAST. I saw it run at Coastal Plains and it was trapping 122-123 IIRC no weight reduction. Search him in the dyno section and you will see what they are capable of....
Edit: Good choice on the AI's OP. djfury05 has a set on a stock bottom car and it is a BEAST. I saw it run at Coastal Plains and it was trapping 122-123 IIRC no weight reduction. Search him in the dyno section and you will see what they are capable of....
Oh trust me I know probably just about every thread on this site that shows AIs head work. Thats how I made my choice.
I decided to do a quick search for 243 and came across what must have been fate. A set of ls6 sodium filled valve heads...SOLD!
Now which cam to go with hmmmm
#39
Yea there ya go I think I may go with this one...•Ai 226° / 234° 113° LSA .600"/.600" Hydraulic Roller Camshaft
Couple questions...
Will my 241 valve covers bolt on these 243 ls6 zo6 heads?
Also, whats the deal with sodium filled valves being longer? Am I going to need different sized pushrods or somethig?
Couple questions...
Will my 241 valve covers bolt on these 243 ls6 zo6 heads?
Also, whats the deal with sodium filled valves being longer? Am I going to need different sized pushrods or somethig?
#40
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Yea there ya go I think I may go with this one...•Ai 226° / 234° 113° LSA .600"/.600" Hydraulic Roller Camshaft
Couple questions...
Will my 241 valve covers bolt on these 243 ls6 zo6 heads?
Also, whats the deal with sodium filled valves being longer? Am I going to need different sized pushrods or somethig?
Couple questions...
Will my 241 valve covers bolt on these 243 ls6 zo6 heads?
Also, whats the deal with sodium filled valves being longer? Am I going to need different sized pushrods or somethig?
Your question was already in the thread you started.
Yes, You will need to measure the push rod length with a push rod length checker.