Engine upgrade in my '77
Thread Starter
Pro
Joined: Oct 2011
Posts: 554
Likes: 82
From: San Jose CA
Engine upgrade in my '77
Hello all;
I finished assembling the short block on my ’77 last night and thought I would post this update since several listers expressed an interest in this mid-level upgrade. So far so good, no drama, all the clearances are in spec, looks like a good start. This is the original L48 that came with my car and the build details are:
• Cylinders bored .040” over, crank journals line honed
• New Scat cast crank
• 9.2:1 CR (.015” deck height, .026” Clevite HG, 70cc chamber vol. with AFR 1036 heads, 10cc dished pistons)
• Lunati cam (.468/.489 lift, 219/227 deg@.050”, 262/268 advertised, 112 deg lobe separation)
Dyno 2000 says this setup will get me 383hp and 387 ft-lb torque, I think that is a bit optimistic. I’m hoping for somewhere around 350hp.
I will have about $3000 into the engine when I am done, doing all the assembly myself.
Cheers,
Jim
I finished assembling the short block on my ’77 last night and thought I would post this update since several listers expressed an interest in this mid-level upgrade. So far so good, no drama, all the clearances are in spec, looks like a good start. This is the original L48 that came with my car and the build details are:
• Cylinders bored .040” over, crank journals line honed
• New Scat cast crank
• 9.2:1 CR (.015” deck height, .026” Clevite HG, 70cc chamber vol. with AFR 1036 heads, 10cc dished pistons)
• Lunati cam (.468/.489 lift, 219/227 deg@.050”, 262/268 advertised, 112 deg lobe separation)
Dyno 2000 says this setup will get me 383hp and 387 ft-lb torque, I think that is a bit optimistic. I’m hoping for somewhere around 350hp.
I will have about $3000 into the engine when I am done, doing all the assembly myself.
Cheers,
Jim
Last edited by Jim__H; Nov 12, 2014 at 01:11 PM.
Thread Starter
Pro
Joined: Oct 2011
Posts: 554
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From: San Jose CA
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Thread Starter
Pro
Joined: Oct 2011
Posts: 554
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From: San Jose CA
Bluedawg:
I don't belive so, it's on there Web site and if I recall correctly it uses a little smaller camshaft hydraulic flat tappet.
Ok, I see where you guys are looking,,,,damn, that is more bang for the buck than I expected.
I don't belive so, it's on there Web site and if I recall correctly it uses a little smaller camshaft hydraulic flat tappet.
Ok, I see where you guys are looking,,,,damn, that is more bang for the buck than I expected.
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