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Which cam and why?
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DRR Pro
Picture of Eman
posted
Wanting a solid flat tappet cam for a 355 SBC motor is 13:1 with profiler aluminum heads 195cc Victor Jr. 750 or 850 carb on gas.
Car is 3.000lbs T350 8"ATI conv approx 5400, 5.13 gear 29.r tires 1/8mi.
Here's what's been suggested:
256/262 .565/.555 106LSA inst 102
267/275 .573/.590 106 102
260/264 .563/.573 106 102
264/269 .570/.582 106 102
258/262 .565/.580 108 108
256/264 .536/.555 105 99
260/268 .555/.574 108 104
256/264 .545/.563 105 102
253/260 .545/.543 110 106
All at 1.5 rockers
What do you think?
 
Posts: 435 | Location: E TN | Registered: February 13, 2009Reply With QuoteReport This Post
DRR S/Pro
Picture of wideopen231
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IMO all are on small side. 5.13 gear with 29" tire I would figure you will be spinning it pretty good and all listed are not going to be high rpm producers.

I would be looking at something in mid 270's to 280 degree range. But hey I have been wrong before.


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Posts: 1380 | Location: Greensboro NC | Registered: May 24, 2011Reply With QuoteReport This Post
DRR Pro
Picture of AlkyIROC
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Other than for a cost saving, why a flat tappet cam?


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Posts: 1254 | Location: Calgary | Registered: June 06, 2001Reply With QuoteReport This Post
DRR Pro
Picture of Eman
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Why not? Cost saving is part of it.
 
Posts: 435 | Location: E TN | Registered: February 13, 2009Reply With QuoteReport This Post
DRR Pro
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quote:
Originally posted by Eman:
Wanting a solid flat tappet cam for a 355 SBC motor is 13:1 with profiler aluminum heads 195cc Victor Jr. 750 or 850 carb on gas.
Car is 3.000lbs T350 8"ATI conv approx 5400, 5.13 gear 29.r tires 1/8mi.
Here's what's been suggested:
256/262 .565/.555 106LSA inst 102
267/275 .573/.590 106 102
260/264 .563/.573 106 102
264/269 .570/.582 106 102
258/262 .565/.580 108 108
256/264 .536/.555 105 99
260/268 .555/.574 108 104
256/264 .545/.563 105 102
253/260 .545/.543 110 106
All at 1.5 rockers
What do you think?


WHo picked those lobes,, no reason to have more ex lift than intake. LS 104 to 106, 256-260 and 262 to 266 duration. Install 2 to 4 degrees advanced.
 
Posts: 1205 | Location: Tewksbury, MA,USA | Registered: November 03, 2000Reply With QuoteReport This Post
DRR Pro
Picture of Eman
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Who picked the lobes? Those are from 7 different cam sources including custom grinders.
 
Posts: 435 | Location: E TN | Registered: February 13, 2009Reply With QuoteReport This Post
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