Help with Gen VI circulating pump with IMCO cover
 

This is my first GEN VI motor (I always had MK IV) and I guess now I'm lost, something that seemed so simple now has turned into a nightmare. I read and read and ask questions but I'm coming up short on an answer. My problem is I read that a double row timing chain will not fit under a stock GEN VI cover, so I bought a IMCO polished alum cover to fit the COM CAM billet chain #7101. The cover fits fine but the new GEN VI circulating pump I bought does not, it's about 1/8 from the block, the back cover bolts on the pump hit the cover and won't allow it to get any closer WTF, do I need to ditch the IMCO cover or space the pump out and throw all my other belts out of wack!!! Any help or ideas would be great. Thanks :angry-smiley-038:

You could get rid of the pump all together and run a crossover.

cloyes makes a double row chain that fits under the stock plastic timing chain cover,google there website.

also,theirs nothing wgong with running a single link chain,,its frickin huge,,bigger then the double roller chain that i have broken in the past..

Concur.

+1

that is true the cloyes double roller chain fits under the stock gen 6 timing cover with no issues .it looks like a plastic cover however it is aluminum

The biggest issue with the single roller is that it stretches it azz off as soon as it's run. One with 5 hours looks just like one with 100 hours. A Rollmaster and SA Gear double roller will fit under the stock cover as well. I grind the ribs out of the inside of the cover just to be safe. They only stick up about .125-.150 or so, so they are easy to grind out.

As mentioned, you could always ditch the pump and use a crossover,
Eddie

Just so you guy's don't think I'm smoking to much crack, I took some pic's of my stuff. Here is the IMCO cover sitting on the engine and a pic of the back bolts on the water pump hitting the cover and the gap. Thank you for all your responses and idea's. The crossover thing, I read too much on how hard they are to set up and get right. Hell I'm having trouble with an easy task of putting a water pump on. LOL and getting a new chain, well it sucks I already speant over $100 for this one. I did not realize until today after I seen a pic, that a GEN VI timing cover has a step in it towards the top that gets thinner. So is there anyone that has an original GEN VI cover off that could measure towards the top, the inside depth. I measured from the face of the block to the outer edge of the chain rivets and got .540 So if a GEN VI cover is that deep, I'll go buy a stock cover and I'll use that damn IMCO one for a door stop and be done with this mess!

Thanks again for all you guy's help!

CJ I measured mine and it`s 1/4 to 5/16th hope this help. Looking at the pic your`s cover is wider than mine at the top.

V/R Ken

What`s in the EMI box; headers if so what kind? I`m looking for a set for my GenVI 502.

CJ I just had a brain storm. Take the bolts out and replace with S/S button head allen screws.

bbaja, I have thought about doing the button head thing, I still might attemt it, heck I ant got nothing to lose. Oh you ask whats in the boxes, I just got new EMI exhaust manifolds and long s/s risers, (I got a healthy roller cam) didn't want to spend anymore for a set of CMI headers. I feel I got a killer price on them, atleast the lowest I could find. Shipped from the factory. I got them from Valley Motor Sports

I assume you have probably already checked this but are you sure you have the right pump? I noticed they mention for the pump you should have that it is for "Late Model BB with composite timing cover",18-3574. http://www.boatersland.com/sie18-3574.html They also have one for use with the stamped steel cover which would be earlier models 18-3577. http://www.marinepartssource.com/new...&mfgno=18-3577
Only other choice I see with out going back to square one would be the cross over kit which actually looks pretty simple and clean.
http://www.cpperformance.com/p-13357...th-bypass.aspx

CJ can you show a pic of your new EMI I`m looking for the same thing. I`m building an 540 9.5-9.8/1 with pretty stout HYD Roller. I`m looking for 675 hp 675tq

Thanks, Ken

Picklinjim, yes I made sure I got the right one, I even called before I ordered. You are right I did see that there is a different p/n for a steel cover.

Well here's my UPDATE to my dilemma. I went to Chevrolet and ordered a new GEN VI timing chain cover, P/N 10230954 and wouldn't you know it fits!!! The chain fits under it and the water pump has no issues either.
ALL IS GOOD!!! A-MEN :party-smiley-020:

Thank You to everyone for your idea's and comments, hope to have it running soon!!

Cool! Now you can get some sleep tonight. Throw that IMCO cover down in the swap shop and recoup something out of it.

I just built a gen 6 502 last winter and the Rollmaster timing chain (buy the better of the two like Eddie mentioned) will fit under the stock cover with a little grinding. Or you can buy the cheap aluminum timing cover like I did. Also, if your looking for a gen 6 billet timing pointer that's fully adjustable.....I spent a lot of time searching the web but finally managed to find one through a company called Unleashed Machine. It was slightly pricey at a little over $60.00 but it's a very niçe piece and also adjustable for different size balancers. Well worth looking into! If you buy one though make sure you mount the part that bolts to the timing cover before you install the ballancer. If you go into my previous post you can see a picture of it.

Your other option as mentioned would be to buy a crossover kit and ditch your circulating pump. That could bring a whole new series of headaches however. Best of luck. If you have any questions feel free to message me! Mark