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 of 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 wallop.
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 not 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 distortion in > the cylinder wall because the non water cooled area will run a little > hotter, however; that is "no big deal" compared to the fifty plus cubic > 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 overheating > 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 Louie wore > out the 350 in his truck, and found a used 400. WOW, the torque increase 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 for 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" or > > 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 fair > > 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]
