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#11 |
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Well you got me thinking, just checked on a 318 mopar in 70 & 69, 70 was 185, 69 - 172. Really, was there that much difference between the two? Hope someone who runs one can chime in.
Sorry if I jumped rails here. Mike The factor for the 70 is 15.32 and the 69 is 16.70. What class are these? Mike Last edited by Coleydog; 12-15-2017 at 05:44 PM. |
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#12 |
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its funny the 318 in 68 is rated higher, even though its the same engine. I am going to asdk the powers that be to get the lower rating on the 68
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#13 | |
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James Williamson W200 J/SA. SS/JA |
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#14 |
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#15 |
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Mr Money, It really doesn't matter what the exact number is. Both will run way under.
They run J and K/SA with a 4 bbl ,and R and T with a 2bbl, and you're better off being in R and T.
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#16 |
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You're not using http://www.classracerinfo.com?? Shame on you!!
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#17 |
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If you were to get a proper 2bbl camshaft ground how much would it differ from a 4bbl grind? I’m under the assumption that you’d want less duration when you go from a 800cfm q jet to a 350cfm 2bbl. Thought hard about doing this with 350/255 before selling, I didn’t think there’d be much difference in the 69-71 350 going from 750 to 500 cfm but these later engines loose a lot more airflow capability
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#18 | |
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#19 |
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So am I looking at about .5 slower for my 1973 Nova 350/175/287 horse set up? .390/.410 lift cam, good 882 heads, Boburka 207 quadrajet, dish pistons, metric 200 trans with 5.13 rear. Car weighs 3470 in H/SA but would weigh 3418 in L/SA with a 2 barrel setup. I figured it at .90 better minus the .5 tenths loss on a carb swap so overall about .4 tenths better class for my combo? Does this sound right?
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#20 |
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The index is .85 better and 50 lbs less so about .90 better but car slows up about .5 because of restrictive 2 bbl carb.
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