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barneybook_3.JPG // I've been digging around, and thinking about what I want to do with the poly in my '64 D200. It's old and worn and I'm getting some oil in one combustion chamber. Luckily, no smoke billowing out the tail pipe, so I'm assuming it's valve guides. Befo
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Re: Carburetion: 2BBL vs 4BBL
Posted by:
JimmieD
(66.81.199.---)
Posts: 1,090
Posts: 1,090
Date: December 01, 2010 08:01PM
Just for comment, the original engine in my strange Town Wagon was the 1967 318-3 Poly, solid lifter, 168 HP with Carter BBD, of course cast iron & single exhaust. It had very strong bottom end & midrange, and really, it held on all the way up but not making a lot of power on top after maybe 4,500-4,700.
I imagine that engine would have shown a pretty large HP increase with a 4bbl, if 202HP was stock passenger car 2bbl numbers, and 260HP is 4bbl numbers: almost 100 more HP with a 4bbl, but it would no doubt take a cam to get there, and dual. I think the BBD was around 325 cfm?
Opps, sorry, correction: bugging me so I went out & checked my data tag: 164HP @ 3,900 rpm. So you could say a 4bbl would be real close to 100HP increase.
Had a buddy in '62-'64 that had a Christine looking '57, with factory 318 Poly 3-2's, best factory cam & factory duals. He regularly ate HOT 348's and 352's so bad they tried to ban him at a couple of strips! They were sure he wasn't stock, but after a couple of tear downs he proved his point: 'Mopar Rules!'
Edited 1 time(s). Last edit at 12/01/2010 08:07PM by JimmieD.
I imagine that engine would have shown a pretty large HP increase with a 4bbl, if 202HP was stock passenger car 2bbl numbers, and 260HP is 4bbl numbers: almost 100 more HP with a 4bbl, but it would no doubt take a cam to get there, and dual. I think the BBD was around 325 cfm?
Opps, sorry, correction: bugging me so I went out & checked my data tag: 164HP @ 3,900 rpm. So you could say a 4bbl would be real close to 100HP increase.
Had a buddy in '62-'64 that had a Christine looking '57, with factory 318 Poly 3-2's, best factory cam & factory duals. He regularly ate HOT 348's and 352's so bad they tried to ban him at a couple of strips! They were sure he wasn't stock, but after a couple of tear downs he proved his point: 'Mopar Rules!'
Edited 1 time(s). Last edit at 12/01/2010 08:07PM by JimmieD.
