Lets play the HP guessing game
11-01-2016, 10:20 PM
#1
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Thread Starter
Lets play the HP guessing game
Im doing some upgrades to my engines. I have room to mill the heads down to get to 9.2:1 if need be but considering blowers in future as well
Spec:
Gen VI 489 Strokers Compression 8.5:1
Scat Balanced Rotating assemblies
Icon Flat top pistons w/ 3cc single relief
Victor JR Intakes port matched
Quickfuel 750 Carbs
Enginequest 320 heads with manley severe intakes 2.25- 30 degree backcut ---Exhaust ferrea tulip 1.88---- comp 930 springs
Comp XM284HR cam 230/236 .547 .547 lift
Pertronix Distributors
.020 in hole
.020 SCE Shim Head Gasket
Spec:
Gen VI 489 Strokers Compression 8.5:1
Scat Balanced Rotating assemblies
Icon Flat top pistons w/ 3cc single relief
Victor JR Intakes port matched
Quickfuel 750 Carbs
Enginequest 320 heads with manley severe intakes 2.25- 30 degree backcut ---Exhaust ferrea tulip 1.88---- comp 930 springs
Comp XM284HR cam 230/236 .547 .547 lift
Pertronix Distributors
.020 in hole
.020 SCE Shim Head Gasket
11-01-2016, 10:36 PM
#5
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Thread Starter
Almost forgot exhaust is gil dry to tip. Numbers seem decent. I like the acceleration this cam give me. Would it be worth it upgrading the carbs still??
11-01-2016, 10:53 PM
#6
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iTrader: (7)
More carb will help you up top. BBC marine engines like carb. Personally I wouldn't put anything less than 800/9022 Holley but it's not like the 750 wouldn't work. Also the 731/741 cranes work well 489/496's. You've got a pretty conservative but reliable build listed.
11-01-2016, 10:59 PM
#7
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Thread Starter
Ya its nothing over the top. Compared to the vortec heads on there now im hoping to get a good kick in the butt. My flow is going WAYYY up but my compression went from 9.6 to the basement from head swap
11-01-2016, 11:07 PM
#9
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iTrader: (7)
Cam specs are close to 454/420 hp if I remember correctly. The 284 has apprx .020 more intake lift. I hate to go beyond what you asked in your original post but if you have dry exhaust and are going roller your sure you don't wanna deck your heads and throw some more cam at it. But regardless you'd have a reliable 500 hp plus or minus engine.
11-01-2016, 11:16 PM
#10
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Thread Starter
It is roller currently. Im probably gonna mill the heads if I dont find blowers. I am limited by piston to valve at 9.2
Duration: 284/290
Lobe Separation: 112
Duration @ .050" Lift: 230 236
Intake Centerline: 110
Valve Lift: .547 .547
Lobe Lift: .323 .323
ATDC 31 BTDC 32
BBDC 79 ABDC 72
Duration: 284/290
Lobe Separation: 112
Duration @ .050" Lift: 230 236
Intake Centerline: 110
Valve Lift: .547 .547
Lobe Lift: .323 .323
ATDC 31 BTDC 32
BBDC 79 ABDC 72
