LS1 Head Help CFM (PRC Heads)
02-10-2008, 07:09 PM
#3
lift.......intake...exhaust
.100.....75..........68
.200.....151........124
.300.....209........160
.400.....260........194
.500.....293........217
.600.....315........227
.625.....318........234
Learn the search feature. During a quick search I found no less than 10 threads with these numbers in them, all posted within the last 6 months.
.100.....75..........68
.200.....151........124
.300.....209........160
.400.....260........194
.500.....293........217
.600.....315........227
.625.....318........234
Learn the search feature. During a quick search I found no less than 10 threads with these numbers in them, all posted within the last 6 months.
02-12-2008, 04:39 PM
#7
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I haven't been able to find any independent flow bench results for their newer 220cc heads. Honestly for the price I would be happy with 300 @.600 lift and that runner size.
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02-12-2008, 05:47 PM
#8
Are you looking for LS6 or 5.3L heads? Here's the flow numbers on both.
PRC 2.5 220cc 5.3L Heads
Int. Exh.
.200 147 111
.300 206 145
.400 254 185
.500 291 204
.600 312 223
PRC 2.5 LS6 Heads
Int. Exh.
.200 147 114
.300 209 152
.400 258 191
.500 294 207
.600 316 226
Go ahead and post the flow numbers you found from these heads. I would be interested to find out. Several companies purchase these heads including MTI and SDPC to name a couple. I have NEVER heard of anyone have problems with PRC heads flowing the same if not more than advertised. Our flow numbers are exactly what they say they are. Anyone is welcome to stop by and check out any head on the flowbench. We have customers do it all the time.
Jon
Texas Speed & Performance
PRC 2.5 220cc 5.3L Heads
Int. Exh.
.200 147 111
.300 206 145
.400 254 185
.500 291 204
.600 312 223
PRC 2.5 LS6 Heads
Int. Exh.
.200 147 114
.300 209 152
.400 258 191
.500 294 207
.600 316 226
Go ahead and post the flow numbers you found from these heads. I would be interested to find out. Several companies purchase these heads including MTI and SDPC to name a couple. I have NEVER heard of anyone have problems with PRC heads flowing the same if not more than advertised. Our flow numbers are exactly what they say they are. Anyone is welcome to stop by and check out any head on the flowbench. We have customers do it all the time.
Jon
Texas Speed & Performance
02-12-2008, 06:19 PM
#10
Agreed we've seen very consistant flow numbers out of our heads. You might even call Zach @ MTI. he flow tests every set of cylinder heads we send him & has had nothing but great things to say about them!
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Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
02-12-2008, 06:22 PM
#11
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Are you looking for LS6 or 5.3L heads? Here's the flow numbers on both.
PRC 2.5 220cc 5.3L Heads
Int. Exh.
.200 147 111
.300 206 145
.400 254 185
.500 291 204
.600 312 223
PRC 2.5 LS6 Heads
Int. Exh.
.200 147 114
.300 209 152
.400 258 191
.500 294 207
.600 316 226
Go ahead and post the flow numbers you found from these heads. I would be interested to find out. Several companies purchase these heads including MTI and SDPC to name a couple. I have NEVER heard of anyone have problems with PRC heads flowing the same if not more than advertised. Our flow numbers are exactly what they say they are. Anyone is welcome to stop by and check out any head on the flowbench. We have customers do it all the time.
Jon
Texas Speed & Performance
PRC 2.5 220cc 5.3L Heads
Int. Exh.
.200 147 111
.300 206 145
.400 254 185
.500 291 204
.600 312 223
PRC 2.5 LS6 Heads
Int. Exh.
.200 147 114
.300 209 152
.400 258 191
.500 294 207
.600 316 226
Go ahead and post the flow numbers you found from these heads. I would be interested to find out. Several companies purchase these heads including MTI and SDPC to name a couple. I have NEVER heard of anyone have problems with PRC heads flowing the same if not more than advertised. Our flow numbers are exactly what they say they are. Anyone is welcome to stop by and check out any head on the flowbench. We have customers do it all the time.
Jon
Texas Speed & Performance
Any on the Stg. 1 LS6 220cc stock valve ?
02-13-2008, 12:27 AM
#12
Launching!
Join Date: Apr 2003
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