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306ci vs 331ci vs 347ci ???
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<blockquote data-quote="truebluedevil02" data-source="post: 10829573" data-attributes="member: 43475"><p>You'll be better off doing a 351, lightly boring it out to 357 (saves a good amount of $$ not having to buy a stroker kit/machine work) using the stock crank and football rods, some forged pistons, roller cam, jic jr or afr 185/205 heads, appropriate intake, etc. 400whp can SOMETIMES stress a 302 block with a weak casting spot but it wont touch a 351 at that power level, you'll EASILY get your 11.99 but probably a good bit faster than that and still be able to keep the set up calm enough for having a great driver/road racer plus you'll also be able to lower your static compression a bit to be able to safely run pump gas.</p><p></p><p>From what ive seen 331-347 just have a hard time making the power NA while retaining reliability. Honestly if you want the ability to go for 50K+ miles then I would go 396/408 stroker, with a good set of heads you'll be way over your HP goal but that just makes it easier to reach your other goals on a safer/milder setup. The more mild the setup the longer it lasts and there is no replacement for displacement. GL with your build.</p><p></p><p>also worth a note, my car making 340whp went 11.79@118 at elevation (over 7500ft DA) at 3275lbs race weight. My car makes 429whp at sea level and would be able to run 11.00 or even 10's NA. So if your just looking for an 11.99 car, stick with a 306 with a good H/C/I/E set up and with some suspension work you'll have it.</p></blockquote><p></p>
[QUOTE="truebluedevil02, post: 10829573, member: 43475"] You'll be better off doing a 351, lightly boring it out to 357 (saves a good amount of $$ not having to buy a stroker kit/machine work) using the stock crank and football rods, some forged pistons, roller cam, jic jr or afr 185/205 heads, appropriate intake, etc. 400whp can SOMETIMES stress a 302 block with a weak casting spot but it wont touch a 351 at that power level, you'll EASILY get your 11.99 but probably a good bit faster than that and still be able to keep the set up calm enough for having a great driver/road racer plus you'll also be able to lower your static compression a bit to be able to safely run pump gas. From what ive seen 331-347 just have a hard time making the power NA while retaining reliability. Honestly if you want the ability to go for 50K+ miles then I would go 396/408 stroker, with a good set of heads you'll be way over your HP goal but that just makes it easier to reach your other goals on a safer/milder setup. The more mild the setup the longer it lasts and there is no replacement for displacement. GL with your build. also worth a note, my car making 340whp went 11.79@118 at elevation (over 7500ft DA) at 3275lbs race weight. My car makes 429whp at sea level and would be able to run 11.00 or even 10's NA. So if your just looking for an 11.99 car, stick with a 306 with a good H/C/I/E set up and with some suspension work you'll have it. [/QUOTE]
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