Thank you all by switching the rods 180deg. what do you mean ? How does the piston come higer up in the bore doing this.
What I'm thinking about building (over an extended period of time because of cost) is 3,75" X 4,155" with 6" rods or if possible 3,875" or 4" stroke. that would be 406, 421 or 434 cid = BB torque Filling the block halfway with block filler and put on milodon main caps I have a friend racing with two 406's and my other friend have a 400 cid with a small blower in his street driven 57 Stepside, they are both happy so I think I will give it a try. Thanks Andr� > Also for higher compression with a 400 using 350 rods you can turn the 350 > small block rods 180 deg. Thus bringing the piston higher to the top o f the > block. You must have a strong starter in this situation though. I ran this > combo for some time years ago dirt tack racing. Man does it pack a wal lop. > > JDHall > > ----- Original Message ----- > From: "Rob Thorburn" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Wednesday, July 10, 2002 3:04 PM > Subject: Re: [Chevelle-List] Small Block > > > > Hello Andre' > > Here is what I know. The 400 Small block is the only Small block to come > > with 5.5" rods. All the other Small- blocks came with 5.7" rods. Chevy > did > > this . . . to make things fit better? I am guessing that they did n ot > want > > the wrist-pin so high on the piston. However, racers seem to "see" > > advantage in longer rods and high wrist pin placement. The other > compromise > > was to simese the cylinder walls. This means that there is no water > cooling > > where the cylinders are closest. This might cause some minor distor tion > in > > the cylinder wall because the non water cooled area will run a littl e > > hotter, however; that is "no big deal" compared to the fifty plus cu bic > > inches gained. The reason I mention it is: the two mods Chevy made, work > > against finding a good block. First the shortened rods increase the "rod > > angle" a lot. Increased rod angle puts side load on the piston, and wears > > out the cylinder walls faster. The other modification, the simesed > cylinder > > walls, make it difficult to overbore much without serious overheatin g > > problems. Chevy says: Maximum safe overbore is .030" on a Small- block, > and > > .060" on a Big- block. I know machinists go way over those specs, but the > > risk is a engine that always runs hot. > > OK, sorry for the negitivity. Now for the plus side, my buddy Lou ie > wore > > out the 350 in his truck, and found a used 400. WOW, the torque inc rease > is > > fantastic. It is a completely different motor! It sounds different > through > > the exhaust, and the off idle torque is unreal. I will be looking f or a > > big-CI Small block for my next project. > > > > Rob '67 Malibu > > '67 El Camino (In a basket) > > > > > > ----- Original Message ----- > > From: <[EMAIL PROTECTED]> > > To: <[EMAIL PROTECTED]> > > Sent: Wednesday, July 10, 2002 4:57 AM > > Subject: Re: [Chevelle-List] Small Block > > > > > > > Hi everybody, > > > > > > Does somebody know if a production (not bowtie) 400 cid small block can > > > take 3,875" stroke without any big mods ? > > > Same question for 4" stroke. > > > We are talking about steel rods. > > > > > > Can a standard deck small block take longer rods than 6" (6,125" o r > > > 6,2") > > > > > > max overbore is 0,040", right ? > > > > > > I'm asking because a friend wants to give me his 400 block > > > He says I can have it for free but i want to pay it, what is a fai r > > > price ? > > > > > > thanks ! > > > > > > Andr� > > > > > > ----------------------------------------------------- > > > To Unsubscribe please visit www.chevelles.net/list.html > > > To start a new topic, send mail to: [EMAIL PROTECTED] > > > > > > > > > > > > > > ----------------------------------------------------- > > To Unsubscribe please visit www.chevelles.net/list.html > > To start a new topic, send mail to: [EMAIL PROTECTED] > > > > > > ----------------------------------------------------- > To Unsubscribe please visit www.chevelles.net/list.html > To start a new topic, send mail to: [EMAIL PROTECTED] > ----------------------------------------------------- To Unsubscribe please visit www.chevelles.net/list.html To start a new topic, send mail to: [EMAIL PROTECTED]
