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Author Topic:   349?
NOBODY
Dirt Roller

Total posts: 11
posted February 18, 2005 04:39 AM  
I first want to say that I love this site, and apreciate all the info on here. Now for my question, I know someone on here has to have run this engine. I am curious as to what you thought about it, and any RPM ranges on a 3/8(even bigger on the top)mile track? I'm basicly wondering what gear to start with? I know the 377 we ran requires lots of rpm to make the power we need and I am sure the 349 will need more. The track starts heavy then by feature it's a dust bowl. Any help would be great, thanks in advance.

zeroracing
Dirt Forum Champ
Total posts: 1876
posted February 18, 2005 06:07 AM  
by 349 what are you exactly meaning? i am going to build a 400 block with a short crank in it that will come out about 348 when done. is that what you mean? i am guessing so. the rpm will depend on the rest of it, but a friend runs one in a late model with great results.
i would also like ot know what a good rpm range is?

NOBODY
Dirt Roller

Total posts: 11
posted February 18, 2005 01:07 PM  
I believe we are on the same page. 400 block,327 crank,and 6.125 rods.(I believe)

dirtbuster
Dirt Forum Champ
Total posts: 2007
posted February 18, 2005 02:16 PM  
Your right it would need a lot of rpm to really make it work. Also a light car would be a necessity. It wouldnt have a lot of torque and you would need to keep it wound up to make it work I would think. Your losing another 1/4" in stroke and if you think about the difference between the way a 406 and a 377 feels it would be about that much more between the 377 and 349. On the other hand a lot of guys have been using 3.33 stroke stuff from cup teams and doing pretty well with it. That would put your stroke about in between the 327 and 350cranks.

Seems like I remember reading on another forum where you wouldnt want to use too long of a rod with it because it would hurt the bottom end to much. Id maybe even stick to a 6" rod in this case. Head and cam selection would also be critical as the same head and cam from a longer stroke motor might seem extra lazy on this one on low and mid range.

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