which gears
Thread Starter
Drifting
Joined: Feb 2007
Posts: 1,429
Likes: 7
From: Providence Rhode Island
which gears
So I'm having the block in my 81 bored and balanced adding new cam and heads and hope to be around 325 hp not a race car by any means but I do want it to go when I step on the gas. So everyone is telling me I need gears but I have no clue what to go with. I saw a couple on mid america 3:55 and 3:07
Melting Slicks
Joined: Sep 2004
Posts: 3,223
Likes: 666
From: Northeast
Are these the ones for $1200? Just a fyi, that with 3.55 gears, at 65mph, you will probably be reving @ 3000rpm. If you dont mind that.
I would suggest talking to a local guy and getting some more info and prices. Contact Gary in CT, besides steering he also rebuilds rearends.
Might be more benefical to speak to someone that can make the change and you know the quality.
Good luck. My .02
PM sent
I would suggest talking to a local guy and getting some more info and prices. Contact Gary in CT, besides steering he also rebuilds rearends.
Might be more benefical to speak to someone that can make the change and you know the quality.
Good luck. My .02
PM sent
Last edited by BKarol; Mar 28, 2011 at 01:25 PM.
Le Mans Master
Joined: Feb 2011
Posts: 5,943
Likes: 61
From: Southern NH
Thread Starter
Drifting
Joined: Feb 2007
Posts: 1,429
Likes: 7
From: Providence Rhode Island
Thread Starter
Drifting
Joined: Feb 2007
Posts: 1,429
Likes: 7
From: Providence Rhode Island
Are these the ones for $1200? Just a fyi, that with 3.55 gears, at 65mph, you will probably be reving @ 3000rpm. If you dont mind that.
I would suggest talking to a local guy and getting some more info and prices. Contact Gary in CT, besides steering he also rebuilds rearends.
Might be more benefical to speak to someone that can make the change and you know the quality.
Good luck. My .02
I would suggest talking to a local guy and getting some more info and prices. Contact Gary in CT, besides steering he also rebuilds rearends.
Might be more benefical to speak to someone that can make the change and you know the quality.
Good luck. My .02
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Thread Starter
Drifting
Joined: Feb 2007
Posts: 1,429
Likes: 7
From: Providence Rhode Island
Part Number: 119821 Grind Number: HR-276-2S-12 IG
Engine Identification:
Start Yr. End Yr. Make Cyl Description
1957 1987 CHEVROLET 8 HR-276-2S-12 IG camshaft - Ch. 262-400 V8 57-87
Engine Size Configuration
262-400 C.I. V
Valve Setting: Intake - .000 Exhaust - .000 Hot/Cold - HOT
Lift: Intake @Cam 325 @Valve 488 All Lifts are based
on zero lash and theoretical rocker arm ratios.
Exhaust @ Cam 339 @Valve 509
Rocker Arm Ratio 1.50
Cam Timing: TAPPET @ .004
Lift: Opens Closes ADV Duration
Intake 27 BTDC 69 ABDC 276 °
Exhaust 75 BBDC 29 ATDC 284 °
Spring Requirements:
Part Number 99846
Loads Closed 125 LBS @ 1.800 or 1 51/64
Open 350 LBS @ 1.280
Recommended RPM range with matching components
Minimum RPM 1600
Maximum RPM 5800
Valve Float 6500
Cam Timing: TAPPET @.050
Lift: Opens Closes Max Lift Duration
Intake 0 BTDC 34 ABDC 107 214
Exhaust 48 BBDC (6) BTDC 117 222
Engine Identification:
Start Yr. End Yr. Make Cyl Description
1957 1987 CHEVROLET 8 HR-276-2S-12 IG camshaft - Ch. 262-400 V8 57-87
Engine Size Configuration
262-400 C.I. V
Valve Setting: Intake - .000 Exhaust - .000 Hot/Cold - HOT
Lift: Intake @Cam 325 @Valve 488 All Lifts are based
on zero lash and theoretical rocker arm ratios.
Exhaust @ Cam 339 @Valve 509
Rocker Arm Ratio 1.50
Cam Timing: TAPPET @ .004
Lift: Opens Closes ADV Duration
Intake 27 BTDC 69 ABDC 276 °
Exhaust 75 BBDC 29 ATDC 284 °
Spring Requirements:
Part Number 99846
Loads Closed 125 LBS @ 1.800 or 1 51/64
Open 350 LBS @ 1.280
Recommended RPM range with matching components
Minimum RPM 1600
Maximum RPM 5800
Valve Float 6500
Cam Timing: TAPPET @.050
Lift: Opens Closes Max Lift Duration
Intake 0 BTDC 34 ABDC 107 214
Exhaust 48 BBDC (6) BTDC 117 222
Melting Slicks
Joined: May 2006
Posts: 2,590
Likes: 403
From: Nashville TN
St. Jude Donor '09
