what do you think about this 427 build
02-20-2005, 09:05 AM
#1
what do you think about this 427 build I bought a set of heads from ET performance my 427ci build up. They were unmachined AFR castings with a ET performance CNC program. They were $5000 with Jesel ajustable rockers ready to bolt on/all top quality valvetrain. Quaility was 100%..I would highly recommend them.
Here are my flow numbers: 250cc intake port volume, 2.100 intake valve, 4.100 bore 28" of water. No pipe on exahust port
Lift Intake CFM Exhaust CFM
.100 78 55
.200 154 111
.300 215 161
.400 276 210
.500 318 228
.550 333 232
.600 343 236
.650 347 239
.700 352 244
What do you guys think about these numbers on my 11:1 CR with my cam specs being:
Car is a 1998 C5 Vette automatic.
Alan Futral Custom Hydraulic roller
Intake Duration at .050 = 250.9
Exhaust Duration at .050 = 257.2
lift intake: .665
lift exahust: .686
Lobe seperation: 113
90mm TPIS TB, FAST Intake, Halltech tric intake system, MAFless, Jesel adjustable rockers, Jesel pushrods, Melling lifters.
Kooks 1 7/8 headers with xpipe and B&B triflow.
48 lb @58psi injectors.
Performance trans with 3800 stall yank converter. Rear is dynotech 3:90 gear.
What do you think this combo is good for? HP /TQ??? Tuning next week at Mike Norris.......
Here are my flow numbers: 250cc intake port volume, 2.100 intake valve, 4.100 bore 28" of water. No pipe on exahust port
Lift Intake CFM Exhaust CFM
.100 78 55
.200 154 111
.300 215 161
.400 276 210
.500 318 228
.550 333 232
.600 343 236
.650 347 239
.700 352 244
What do you guys think about these numbers on my 11:1 CR with my cam specs being:
Car is a 1998 C5 Vette automatic.
Alan Futral Custom Hydraulic roller
Intake Duration at .050 = 250.9
Exhaust Duration at .050 = 257.2
lift intake: .665
lift exahust: .686
Lobe seperation: 113
90mm TPIS TB, FAST Intake, Halltech tric intake system, MAFless, Jesel adjustable rockers, Jesel pushrods, Melling lifters.
Kooks 1 7/8 headers with xpipe and B&B triflow.
48 lb @58psi injectors.
Performance trans with 3800 stall yank converter. Rear is dynotech 3:90 gear.
What do you think this combo is good for? HP /TQ??? Tuning next week at Mike Norris.......
02-20-2005, 09:43 AM
#3
TECH Fanatic
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Location: harrisburg, pa
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Compare those to the AFR CNC 225 flow numbers and what do you think? $5000 is up there..
Injectors are on the large side but will work tuned properly..
Cant wait to see what it does..
Hope its at least 550rwhp like the latest LS2 402s here..
Injectors are on the large side but will work tuned properly..
Cant wait to see what it does..
Hope its at least 550rwhp like the latest LS2 402s here..
02-20-2005, 06:41 PM
#4
Launching!
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I would say the the $5,000 225 AFR's pulled almost the same flow numbers at different lifts as my stage III LS6 and Stage III LQ9 heads running the same valves. They all look about the same +/-1%.
That is quite a cam you have, be curious if it is streetable.
That is quite a cam you have, be curious if it is streetable.
02-20-2005, 07:22 PM
#6
ET performance heads. These heads included all top of the line valve components. Also included the Mohawk adjustable Jesel rockers (Cost 1200.00 normally). They also Port matched a FAST intake.
Please show your flow numbers and specs///...intake runner volume?
Please show your flow numbers and specs///...intake runner volume?