AFR 205 vs TSP 5.3 2.5 & fast 90/90
10-07-2007, 05:50 PM
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AFR 205 vs TSP 5.3 2.5 & fast 90/90 AFR 205 59cc, g5x3 114 (already in car), .040 cosmetic, flycut
or
TSP 5.3 2.5 heads, g5x3 114, whatever head gasket needed to not flycut, and a fast 90/90 set up
Keep in mind that I am also running a 100 wet shot of nitrous. What are some pros and cons to each ? Im having a tough time deciding what I want to do, mainly Im trying to talk myself out of flycutting pistons. School me.......
or
TSP 5.3 2.5 heads, g5x3 114, whatever head gasket needed to not flycut, and a fast 90/90 set up
Keep in mind that I am also running a 100 wet shot of nitrous. What are some pros and cons to each ? Im having a tough time deciding what I want to do, mainly Im trying to talk myself out of flycutting pistons. School me.......
10-07-2007, 06:08 PM
#2
How can you compare a truck head with a custom casting? Now if you want to compare apples to apples how about TSPs Terminators against the AFRs. You get what you pay for.
10-07-2007, 06:21 PM
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Im not comparing which head will be better. Im talking about the power of the whole set up. I know that the AFR set up will produce great numbers will power under the curve but what about the 2nd set up ? How do you guys think it will work ?
10-07-2007, 06:26 PM
#5
Even though the AFR setup isn't running the FAST 90 (assuming it's running the LS6), i still think it has the upper hand over the 5.3's. That cam will compliment you either way (more so with AFR's flow numbers though i would think).
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10-08-2007, 05:30 PM
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This ones a 112 G5x3 , the 114 should have slightly more p/v clearance . Any way the budget heads made strong power and backed it up in trap speeds , corrected the fellas car run around 11.43 @ 125mph N/A with 3.42's probably near full weight , F-body 3,500lbs {without driver} .
https://ls1tech.com/forums/dynamometer-results-comparisons/712347-prc-stage-2-5-5-3-heads-488-rwhp-428-rwtq.html
https://ls1tech.com/forums/dynamometer-results-comparisons/712347-prc-stage-2-5-5-3-heads-488-rwhp-428-rwtq.html
10-08-2007, 06:08 PM
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I say use 205's not because I have them. I had TEA 5.3's on there before. The aftermarket castings are a lot stronger than stock castings. Meaning they have more material on the deck surface and they can be ported a little further if you ever step up to a little bit bigger CI motor.
My 5.3's had a crack in them when I bought them and they did not catch it the first time I sent them to TEA to be checked out. So it cost me in the long run. I had to take a loss on them and go for the better heads. I was spraying a 150shot on the car also.
The stronger heads will be more reliable for the juice.
Also mine were 58cc's and I used a stock size gasket and had to fly cut a lot. I had the same cam.It was on a 114+4 lsa.
Power wise, I think they will be about the same. But you gain durability!
My 5.3's had a crack in them when I bought them and they did not catch it the first time I sent them to TEA to be checked out. So it cost me in the long run. I had to take a loss on them and go for the better heads. I was spraying a 150shot on the car also.
The stronger heads will be more reliable for the juice.
Also mine were 58cc's and I used a stock size gasket and had to fly cut a lot. I had the same cam.It was on a 114+4 lsa.
Power wise, I think they will be about the same. But you gain durability!
Last edited by JRracing; 10-08-2007 at 08:54 PM.
10-08-2007, 08:05 PM
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I say use 205's not because I have them. I had TEA 5.3's on there before. The aftermarket castings are a lot stronger than stock castings. Meaning they have more material on the deck surface and they can be ported a little further if you ever step up to a little bit bigger CI motor.
My 5.3's had a crack in them when I bought them and they did not catch it the first time I sent them to TEA to be checked out. So it cost me in the long run. I had to take a loss on them and go for the better heads. I was spraying a 150shot on the car also.
The stronger heads will be more reliable for the juice.
Also mine were 58cc's and I used a stock size gasket and had to fly cut a lot. It was on a 114+4 lsa.
Power wise, I think they will be about the same. But you gain durability!
My 5.3's had a crack in them when I bought them and they did not catch it the first time I sent them to TEA to be checked out. So it cost me in the long run. I had to take a loss on them and go for the better heads. I was spraying a 150shot on the car also.
The stronger heads will be more reliable for the juice.
Also mine were 58cc's and I used a stock size gasket and had to fly cut a lot. It was on a 114+4 lsa.
Power wise, I think they will be about the same. But you gain durability!
