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Old 12-25-2011, 09:42 PM
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cam selection for my poncho 400

72cc heads ported polished bowl blend,stock crank stock push rods and rockers edle intake and carb .... TCI turbo 400 and a 323 rear end ...




question which cam should i get ....

http://www.lunatipower.com/Product.aspx?id=2354&gid=297


or!!!!!!!!!!!!!!!

http://www.lunatipower.com/Product.aspx?id=2355&gid=297 !!!!

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Old 12-26-2011, 10:46 AM
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cam selection

http://pontiacstreetperformance.com/psp/camselect.html

268/276 cam is more aggressive of the two. Are you running a stall converter?

Last edited by beertracker; 12-26-2011 at 10:54 AM.
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Old 12-26-2011, 11:37 AM
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Of the two cams that you show, I'd pick the first one. It's more apt to bleed of some cylinder pressure, but I don't think either will work with pump gas and 72cc heads!
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Old 12-26-2011, 11:39 AM
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Talking to Cliff Ruggles, a true Pontiac NUT and my experience as well, the first one will probably run better in your car. Pontiac heads seem to like the 112LSA better than the 110LSA.
If you have the compression, (you didn't say) the 110LSA will run pretty good, too but not have the broad torque curve I like on the street.
Be very careful of your ECR (effective compression ratio).
You can figure that here:
http://kb-silvolite.com/calc.php?action=comp2
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Old 12-27-2011, 10:14 AM
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thanks

yeah im running 17cc dish pistons should be about 9-1-1 comp...
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Old 12-27-2011, 10:15 AM
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just trying to get 400 hp ....

still 262 cam... no stall converter
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Old 12-27-2011, 05:04 PM
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I'm going to use the Lunati 262/268 in my 400 build...also TH400 in mine.

Which pistons did you choose for your motor?
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Old 12-27-2011, 07:37 PM
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KB icon 17 cc dish pistons ..

nswonfoswn
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