bottom end oppinions
08-12-2010, 09:21 AM
#1
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bottom end oppinions im wanting to strengthin my bottom end i was debating between a forged 346 or possibly a stroker kit. im still a lil new to the stroker stuff so information would help whats the pros and cons to stroking my motor out and what size stroker would u build for a street car
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08-12-2010, 09:37 PM
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i built a 383 with my original MS4 cam. the driveability is way better and i have more torque on the bottom. also running 11.2c/r still have better street manners.
08-13-2010, 04:57 AM
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Depends on how crazy you want to go on the heads and cam and the drivetrain behind it.
The motor in my vette was a 408 11.5:1 with TEA TFS 225 heads and a 240-246-600-600-114 cam. Thru a 4l65 it made a bit over 500 on a nitrous tune. A motor tune should see ~550.
The motor took some decent hits of nitrous without a peep and got around 30 mpg cruising on the highway.
I'm thinking of going with another 408 in my next car but using the ls3 heads and intake on it.
The motor in my vette was a 408 11.5:1 with TEA TFS 225 heads and a 240-246-600-600-114 cam. Thru a 4l65 it made a bit over 500 on a nitrous tune. A motor tune should see ~550.
The motor took some decent hits of nitrous without a peep and got around 30 mpg cruising on the highway.
I'm thinking of going with another 408 in my next car but using the ls3 heads and intake on it.
08-13-2010, 11:01 AM
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It's mainly a cost issue. If you have the extra money to spend, then by all means go with a bigger cube motor. It will make more power and have better driveablity manners. Most average 408 combos will make 500 to 580 wheel horse power and drive nicely. Of coarse this comes along with a good matched combo and a tune to go with it. Just keep in mind that with more power comes the need for better parts else where, such as tranny upgrades, fuel system needs, rear end and suspension needs also. There's not much of a down side to a larger stroker combo other than price but with the trade off of more power.
08-13-2010, 01:15 PM
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i already have suspension mods and upgrades and im not gonna install the stroker untill i have the transmission rebuild kit for it as well and the heads and valvetrain and new cam also so i can do it al at once
08-13-2010, 01:22 PM
#15
You can do a 383 stroker motor on a LS1 or a LS6 with out boring it. That is more so in the stroke of the crank. Safes a lot if you dont need a new block. Your valve clearance is a issue, but you can have valve refeilfs in the new pistions for that.
08-13-2010, 03:39 PM
#17
ive been thinking about the same options, but I dont think I want to be to over the top. Im swaying back to a LS2 build and I can still use my AFR 205 heads, 90/90 headers, oil pan. Just to make it more of a budget build. Ill leave HP on the table, but if Im over 500 RWHP, Ill be happy
then Ive got to find a tuner for it
then Ive got to find a tuner for it
08-13-2010, 09:14 PM
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my 383 made 480rwhp and 440rwtq and i used an old block i had lying around. that's with my original MS4 and a set of TSP stage 2.5 ls6 heads. you wanting all motor or f/i?