How big can i go?
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Drifting
Joined: Apr 2003
Posts: 1,390
Likes: 10
From: Jacksonville FL
How big do you want to go? You can't bore these blocks much so you're pretty much limited to 383, unless you re sleeve the block. Seems most go with the ls2 or ls7 block if they want bigger though.
Le Mans Master
Joined: Sep 2007
Posts: 7,604
Likes: 8
From: Belleville Il
You might want to get a hold of the October 08 Car Craft Magazine,,They have a cover story on Gen III stroker motors. gives you a lot of info on the stock motors bore and strokes and many options and combinations available,and pros and cons of various combos.One of the cons is piston skirt scuffing when the stroke pulls the skirt too low in the bore!!Worth looking up,,good inf that might save some headaches in the future!!
Intermediate
Joined: Oct 2008
Posts: 32
Likes: 0
From: Greenwich Connecticut
A friend of mine has a 409ci out of a stock C5 block, but I wouldn't recommend it. The car needed a ton of extra cooling stuff to stay cool and ended up being more trouble than it was worth, whereas a 402 would have been basically the same thing without the headaches.
Safety Car
Joined: May 2006
Posts: 3,799
Likes: 1
From: Northern Virginia
St. Jude Donor '08
If you want to get some good advice it would be helpful to know a little bit more about what your goals are for the car.
There are lots of ways to make big power. Problem is you can't use it on the street because of traction issues. You also have the legal issues to consider.
If you bump up the power significantly you will need to also make improvements to your drivetrain such as new clutch, better torque tube, tranny, and differential. It adds up real fast! And when you go to sell you won't get much of what you spent back.
It's my understanding that the earlier LS1 blocks are not as good as the later blocks, which is something you should consider.
There are lots of ways to make big power. Problem is you can't use it on the street because of traction issues. You also have the legal issues to consider.
If you bump up the power significantly you will need to also make improvements to your drivetrain such as new clutch, better torque tube, tranny, and differential. It adds up real fast! And when you go to sell you won't get much of what you spent back.
It's my understanding that the earlier LS1 blocks are not as good as the later blocks, which is something you should consider.