71 W block
#1
71 W block
Ok so these are supposed to be the stronger blocks??? can they be bored to .090 and be good to go?
I want to get 406 cuin with a shorter than 4in stroke!
On the other hand might go more than a 4in stroke! like a 430!
Need block limits for the D blocks?
I want to get 406 cuin with a shorter than 4in stroke!
On the other hand might go more than a 4in stroke! like a 430!
Need block limits for the D blocks?
#2
dont think they will go 90 at all, but yes they are stronger there seems to be more metal in the main bearing area. Lots of turbo guys are saying 800+ if you keep the rs down. I guess you can sonic test it to see how much you could safely bore it. I have seen 40 on lots of w motors and a few 60 but never 90
#3
Ok was wondering i will be having that done to make the final decision though!
Wanted some insight from fellow engine guys, have only done 1 351 build and it was only 410 but only a .030 bore!
next question would it be worth going forged crank in this type production block, unlike the 302`s?
Wanted some insight from fellow engine guys, have only done 1 351 build and it was only 410 but only a .030 bore!
next question would it be worth going forged crank in this type production block, unlike the 302`s?
Last edited by Venomantidote95; 07-02-2011 at 05:39 PM.
#4
any regular SBF will only go to .040" SAFELY, yes you can go .060" but its a crap shoot. a 351C can go to .060" all day long, but thats the only one.
is the block bored over yet? usually going from .030 to .040 cleans it up...
D4 and earlier are the strongest in theory, about the only downside is not having a 1pc RMS, other than that they're good.
nothing wrong with a 4" stroke, just keep the rpms down and get ready to yank the front end lol
is the block bored over yet? usually going from .030 to .040 cleans it up...
D4 and earlier are the strongest in theory, about the only downside is not having a 1pc RMS, other than that they're good.
nothing wrong with a 4" stroke, just keep the rpms down and get ready to yank the front end lol
#6
#9
any regular SBF will only go to .040" SAFELY, yes you can go .060" but its a crap shoot. a 351C can go to .060" all day long, but thats the only one.
is the block bored over yet? usually going from .030 to .040 cleans it up...
D4 and earlier are the strongest in theory, about the only downside is not having a 1pc RMS, other than that they're good.
nothing wrong with a 4" stroke, just keep the rpms down and get ready to yank the front end lol
is the block bored over yet? usually going from .030 to .040 cleans it up...
D4 and earlier are the strongest in theory, about the only downside is not having a 1pc RMS, other than that they're good.
nothing wrong with a 4" stroke, just keep the rpms down and get ready to yank the front end lol
Last edited by uedlose; 07-03-2011 at 08:31 AM.
#10
Ok was wondering i will be having that done to make the final decision though!
Wanted some insight from fellow engine guys, have only done 1 351 build and it was only 410 but only a .030 bore!
next question would it be worth going forged crank in this type production block, unlike the 302`s?
Wanted some insight from fellow engine guys, have only done 1 351 build and it was only 410 but only a .030 bore!
next question would it be worth going forged crank in this type production block, unlike the 302`s?