Estimate HP/TQ numbers and compression???
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From: Hattiesburg, MS
Car: 1987 Camaro Z28
Engine: 5.3L
Transmission: 4L60E
Axle/Gears: 3.42LSD
Estimate HP/TQ numbers and compression???
Can you guys give me an estimate on my HP/TQ? Also what would my compression be.
Setup:
880 block (come out a 94 z71)
350 bored 0.030 over
Flat Top pistons with 4 valve relief
Stock rods and crank
high volume oil pump
Vortec heads bowl blended
260H flat tappet cam
Felpro blue head gasket.
TPI intake
Serpentine pulley set-up
roller rockers.
700r4 trans w/ 2500 stall
Setup:
880 block (come out a 94 z71)
350 bored 0.030 over
Flat Top pistons with 4 valve relief
Stock rods and crank
high volume oil pump
Vortec heads bowl blended
260H flat tappet cam
Felpro blue head gasket.
TPI intake
Serpentine pulley set-up
roller rockers.
700r4 trans w/ 2500 stall
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From: 39.84N 105.11W
Car: '89 Trans Am GTA
Engine: WAS 350 - now L92 (alum. 378/6.2L)
Transmission: WAS 700R4, now a built T56
Axle/Gears: 3.27 9-bolt
Originally Posted by 1987earthquake
Setup:
880 block (come out a 94 z71)
...
260H flat tappet cam
880 block (come out a 94 z71)
...
260H flat tappet cam
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Joined: Jun 2005
Posts: 266
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From: Texas
Car: 89 GTA Nighthawk
Engine: 389 CID Vortec TPI
Transmission: TCI 700R4 w/Vigilante
I ran the numbers for you. But, your compression depends on where your pistons are installed, zero deck, in the hole? I believe your head gasket is .043 so assuming a 30 thousanths in the hole you get 9.7:1 CR.
296 HP 407 TQ assuming headers and a good exhaust. I probably shouldn't have done this, you didn't give enough information to be accurate, but it's close.
296 HP 407 TQ assuming headers and a good exhaust. I probably shouldn't have done this, you didn't give enough information to be accurate, but it's close.
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Member
iTrader: (5)
Joined: May 2006
Posts: 478
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From: Hattiesburg, MS
Car: 1987 Camaro Z28
Engine: 5.3L
Transmission: 4L60E
Axle/Gears: 3.42LSD
All truck blocks came with flat tappet. What other info would you need to get more accurate numbers. Oh the pistons were installed at stock height. I didn't deck the block. I will have headers, no smog, no cat, flowmaster mufflers. Let me know what else info you would need. Thanks!
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