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<blockquote data-quote="swampratt" data-source="post: 3093766" data-attributes="member: 15054"><p>I have a 427" BBC short deck that is not put together..I have been saving it for almost 25 years.</p><p>One day I will put it together.</p><p>.030" over steel crank, stock 3.76" stroke and 781 heads I ported years ago and 2.19-1.88 valves.</p><p>11:1 pistons and a Crower cam.. back then it looked like a decent cam and today I would probably go larger.</p><p></p><p>It is a 274FDP or part number 01349</p><p></p><p>Mechanical Flat Tappet</p><p><strong>Valve Lash</strong> .022" intake and .024" exhaust</p><p><strong>Lobe center</strong> 105</p><p><strong>Advertised Duration: Intake / Exhaust</strong> 274 / 288</p><p><strong>Duration @ .050" Lift: Intake / Exhaust</strong> 242 / 252</p><p><strong>Lobe Lift: Intake / Exhaust</strong> .273 / .285</p><p><strong>Rocker Ratio: Intake / Exhaust</strong> 1.7 / 1.7</p><p><strong>Gross Valve Lift: Intake / Exhaust</strong> .564 / .587 </p><p></p><p>Back then I wanted hard pulling out of the hole and no more than 600" lift and no more than 260@ .050 duration.</p><p>Power brakes were not on the cars I had.</p><p></p><p>Today Knowing what i know I would go more duration.</p><p>I have ran 252@ .050 on a 106LSA in a 355" with 10.3 compression and power brakes still worked .. it pulled 10.5" vacuum.</p><p>That small block went mid 11's, vehicle weighed in at 3000 lb.</p><p></p><p>Gas sucking pig though.</p><p>I would probably run the old crower grind as it would be fine for a daily driver and trailer puller.</p><p>But if I wanted to never pull a trailer I would add 20 degrees more duration.</p><p></p><p>Of course a Tall Tunnel-Ram and 2 carter AFB carbs to top it off.</p></blockquote><p></p>
[QUOTE="swampratt, post: 3093766, member: 15054"] I have a 427" BBC short deck that is not put together..I have been saving it for almost 25 years. One day I will put it together. .030" over steel crank, stock 3.76" stroke and 781 heads I ported years ago and 2.19-1.88 valves. 11:1 pistons and a Crower cam.. back then it looked like a decent cam and today I would probably go larger. It is a 274FDP or part number 01349 Mechanical Flat Tappet [B]Valve Lash[/B] .022" intake and .024" exhaust [B]Lobe center[/B] 105 [B]Advertised Duration: Intake / Exhaust[/B] 274 / 288 [B]Duration @ .050" Lift: Intake / Exhaust[/B] 242 / 252 [B]Lobe Lift: Intake / Exhaust[/B] .273 / .285 [B]Rocker Ratio: Intake / Exhaust[/B] 1.7 / 1.7 [B]Gross Valve Lift: Intake / Exhaust[/B] .564 / .587 Back then I wanted hard pulling out of the hole and no more than 600" lift and no more than 260@ .050 duration. Power brakes were not on the cars I had. Today Knowing what i know I would go more duration. I have ran 252@ .050 on a 106LSA in a 355" with 10.3 compression and power brakes still worked .. it pulled 10.5" vacuum. That small block went mid 11's, vehicle weighed in at 3000 lb. Gas sucking pig though. I would probably run the old crower grind as it would be fine for a daily driver and trailer puller. But if I wanted to never pull a trailer I would add 20 degrees more duration. Of course a Tall Tunnel-Ram and 2 carter AFB carbs to top it off. [/QUOTE]
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