CK5
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454 vs 427 vs 383 stroker
- Thread starter jk3078
- Start date
Are you trying to keep this secret from your competitors? If not, see what they're set up is for gears and tires. You should be able to run a 427 all day at 5-6K rpm. What heads are you running? I would suggest open chamber medium oval ports. The rectangle ports are too big for that 2-6k rpm range. If you still have the closed chamber heads, they can be traded to a collector or SS drag racer for a set of ready to run open chamber medium port heads. I would definitely balance the rotating assy. and use ARP rod bolts. Is it a 2 bolt or 4 bolt mains?
beastofablaze
1/2 ton status
Word.
If your gonna be spinning this thing up balancing and good bolts are as important as running the right oil.
If your gonna be spinning this thing up balancing and good bolts are as important as running the right oil.
fordfreak300
Registered Member
427 all the way. I think enough reasons have been stated and I agree with them. For the right amount of money any motor can go fast. A 427 will jst make it easier to do. 427s can rev. Make sure you balance the rotatign assembly liek stated above, also make sure yu research all of your parts and the heads, cam and intake match. That will be essential to making good power.
supermanmudracing
Registered Member
there are no substitute for inches,big block has torque,but if your looking for rpms to turn tires i would turn the 350 into a 377 by changing to a 400 crank,i ran one and it would turn the tires and rpms
beastofablaze
1/2 ton status
A 377 is a 350 without the overbore... in order to do that he would have to start out with a new block or just not bore an old one(bad idea)
DEMON44
Low-Tech Redneck
A 377 is a destroked 400. 400 with a 350 crank= screamer. but before you get all up in arms about it, I'm not saying a 4" bore & 3.75" stroke doesn't equal 377". It does (376.9cid actually) A 377 was born as a race engine to fit into a partucular class. And it is a de-stroked 400. 4.155" bore 3.48" stroke = 377.4cid
but you gotta have a 427 in service, for the reasons already stated.
edit I use
bore x bore x stroke x 6.2832 = cid (only for a v8 though)
but you gotta have a 427 in service, for the reasons already stated.
edit I use
bore x bore x stroke x 6.2832 = cid (only for a v8 though)
Last edited:
SUBFAN
1/2 ton status
Bore x Bore x stroke x (no. of cylinders) x .7854....
A 377 is a .030 over 400 with a 350 crank installed....
4.155 x 4.155 x 3.48 x 8 x .7854 = 377.48....
Build one of those 427's and smile all day....
A 377 is a .030 over 400 with a 350 crank installed....
4.155 x 4.155 x 3.48 x 8 x .7854 = 377.48....
Build one of those 427's and smile all day....
beastofablaze
1/2 ton status
Haha... i meant to say a 383 without the overbore... I guess there are a few ways to make a 377.
78Suburban
1/2 ton status
DEMON44 said:
Just out of curiosity, what kinda of hp/tq numbers would one of these destroked 400's be making? at what RPM's? What type of racing were they used in? It just sounds like an inteseting combination, and I'm always listening out for possible builds for when I get rich
Thanks,
James
Sell me the 427 build a 383 and gear the rears mud bogging is not about engine speed its about wheel speed torque to get them moving and gear to get them faster.
