Dart Dart Pro1 205cc heads - upgrade from PRC 5.3s?
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I have PRC stage 2.5 5.3 heads now. Found a set of brand new Dart Pro1 205cc heads for a decent deal and I was thinking of swapping. I'm guessing these will be an upgrade from what I have, but by how much? I have a TSP 228R-112 cam and I'm planning on keeping it.
Who is using them? List your combo / dyno if possible. Thanks.
Who is using them? List your combo / dyno if possible. Thanks.
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Here you go, this should help:
http://www.gmhightechperformance.com...s/viewall.html
Still, I think the darts would perform slightly better than your 2.5's but I think youre better off saving for a little better head like the AFR or TFS
Dart 0.100 0.200 0.300 0.400 0.500 0.550 0.600 0.650 0.700
Intake 66.3 131.1 185.5 232.4 266.6 275.5 261.3 263.0 264.5
xhaust 50.0 96.0 138.0 174.5 196.3 204.3 208.02.5 5.3's
PRC 5.3's
3.910" Flow Plate - No Exhaust Pipe
Lift
Intake Flow
Exhaust Flow
.200"
147 cfm
111 cfm
.300"
206 cfm
145 cfm
.400"
254 cfm
185 cfm
.500"
291 cfm
204 cfm
.600"
312 cfm
223 cfm
http://www.gmhightechperformance.com...s/viewall.html
Still, I think the darts would perform slightly better than your 2.5's but I think youre better off saving for a little better head like the AFR or TFS
Dart 0.100 0.200 0.300 0.400 0.500 0.550 0.600 0.650 0.700
Intake 66.3 131.1 185.5 232.4 266.6 275.5 261.3 263.0 264.5
xhaust 50.0 96.0 138.0 174.5 196.3 204.3 208.02.5 5.3's
PRC 5.3's
3.910" Flow Plate - No Exhaust Pipe
Lift
Intake Flow
Exhaust Flow
.200"
147 cfm
111 cfm
.300"
206 cfm
145 cfm
.400"
254 cfm
185 cfm
.500"
291 cfm
204 cfm
.600"
312 cfm
223 cfm
#10
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Here you go, this should help:
http://www.gmhightechperformance.com...s/viewall.html
Still, I think the darts would perform better than your 2.5's but I think youre better off saving for a little better head like the AFR or TFS
Dart 0.100 0.200 0.300 0.400 0.500 0.550 0.600 0.650 0.700
Intake 66.3 131.1 185.5 232.4 266.6 275.5 261.3 263.0 264.5
xhaust 50.0 96.0 138.0 174.5 196.3 204.3 208.02.5 5.3's
3.910" Flow Plate - No Exhaust Pipe
Lift
Intake Flow
Exhaust Flow
.200"
147 cfm
111 cfm
.300"
206 cfm
145 cfm
.400"
254 cfm
185 cfm
.500"
291 cfm
204 cfm
.600"
312 cfm
223 cfm
PRC
http://www.gmhightechperformance.com...s/viewall.html
Still, I think the darts would perform better than your 2.5's but I think youre better off saving for a little better head like the AFR or TFS
Dart 0.100 0.200 0.300 0.400 0.500 0.550 0.600 0.650 0.700
Intake 66.3 131.1 185.5 232.4 266.6 275.5 261.3 263.0 264.5
xhaust 50.0 96.0 138.0 174.5 196.3 204.3 208.02.5 5.3's
3.910" Flow Plate - No Exhaust Pipe
Lift
Intake Flow
Exhaust Flow
.200"
147 cfm
111 cfm
.300"
206 cfm
145 cfm
.400"
254 cfm
185 cfm
.500"
291 cfm
204 cfm
.600"
312 cfm
223 cfm
PRC
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Thanks guys. I think I'm gonna pass. Even if they gave me 15 extra rwhp (which they likely wouldn't) there's no way it would be worth the cost of labor, gaskets, etc. to do it.
Guy on Corvetteforum from LG has a set brand new for $1400 assembled with springs.
Guy on Corvetteforum from LG has a set brand new for $1400 assembled with springs.
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I saw those too. Any guess on power gains over what I have using my smallish cam?
Honestly I should just leave what I have on there and just buy a nice set of lightweight wheels and get rid of my Chinese repro ones...I would probably feel those more than the 20hp I would gain with better heads....
Honestly I should just leave what I have on there and just buy a nice set of lightweight wheels and get rid of my Chinese repro ones...I would probably feel those more than the 20hp I would gain with better heads....
#17
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So for $1,400, since you already have heads, I would pass.
#18
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Dart heads ported by Advanced Induction might be worth it tho.
AI charges $1895 for the full CNC, BTR Platinum springs, new backcut Manley valves, and the Dart castings. I just sent a note to Phil asking about them. The flow numbers on them are better than the AI 226cc LS6 heads and it's a 223cc port with 2.00"/1.55" valves.
Flow:
100 66.7 52.5
200 149.4 113.1
300 217.6 156.3
400 262.7 201
500 297.3 247.6
550 305.2 261.5
600 311.4 272.3
650 313.6 275.8
AI charges $1895 for the full CNC, BTR Platinum springs, new backcut Manley valves, and the Dart castings. I just sent a note to Phil asking about them. The flow numbers on them are better than the AI 226cc LS6 heads and it's a 223cc port with 2.00"/1.55" valves.
Flow:
100 66.7 52.5
200 149.4 113.1
300 217.6 156.3
400 262.7 201
500 297.3 247.6
550 305.2 261.5
600 311.4 272.3
650 313.6 275.8
Last edited by JakeFusion; 12-11-2012 at 10:48 AM.