Good evening all,
I pulled the motor out of the Swinger this week. Took some measurements, and this is what I have.
deck hgt. .179
chamber 47 cc
bore 3.44
stock valves 1.36/1.62

looking for 40 cc's, another.050 off should get me that, and a set of direct fit big valves[direct fit length and diamiter]. With a felpro gasket I should get about 9.5:1 CR.
Does this sound correct?
Thanks always for your help.

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The surgeon general never said that smoking the competition was bad for your health.

Based on a 3.50 bore, .034 thick Fel Pro, I get,
8.89 with 47cc
9.66 with 40cc

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Slant Cecil

Bore is 3.44. .040 over. Looking for the same size stem, in a bigger valve.

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The surgeon general never said that smoking the competition was bad for your health.

Very reliable E-bay seller.
http://cgi.ebay.com/ebaymotors/225-slan ... 5adfdde0ae

Also has a listing for these same valves, with 340 type valve springs, and locks, as a package deal.

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Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 170 nitrous
64 Valiant Signet
64 Valiant 4dr 170
64 Valiant 4dr 225

When I posted 3.50 bore, that was for the Fel Pro. I used 3.44 cyl bore for the CR calc.

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Slant Cecil

Yep ebay eng builders valves i have two heads with them in. Curious has anyone ever flowed a head before and after the install of bigger valves what kinda gains based on just a bigger valve?

Kev

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