Paul D Valle

Thanks for the info. I like to use the parts place.

The ones in the pictture appear to be plastic. I have a Baltimore built car with plastic inner fenders made in Canada as most built here were.. as most know they crack at the upper attachment location around the bolt. I want to replace them with quality representation since nos are impossible to find. Please let me know if the parts place ones are a guality replacement

Correction: BradPenn 15W40

BradPenn 10w40 Zinc is in the oil Wix 51061

That's correct

The grounding connections are critical on the dash clusters. I have found that the new printed circuit mylar can partially cover the #10 screw grounding connection to the cluster can. From your old circuit determine the location of the grounding connection for the guages that are not working and ground it with a jumper to anypoint on the dash Steel frame.

Perhaps the casting date can explain why a '71 LS5 block has 4 bolt mains. A late '70 casting may have been used since there were no LS6 engines put in production cars in 1971. Also, it is possible that an engine rebuilder added 4 bolt main caps to the 512 block for racing purposes. There is no reason to specify 4 bolt mains for a stock LS5 which was detuned in 1971 with open chamber heads and a mild hyd. cam. Also, all 512 blocks are not the same. All LS6 blocks were machined for 4 bolt main caps and also oil cooling add ons. LS5 blocks do not have special provisions for oil cooling. One way to verify a LS6 block is to look for a plugged port on the driver side of the block behind the oil filter. Hope all this adds to the confusion 😕 Merry Christmas to all🎄

Correction : incompatable

Now that you know you have the wrong carb make sure you search for the correct build date to match your car. Jeff Dotterer Dated parts in PA may be able to help you. I have a professionally rebuilt 7040202 which is for 1970 300hp cars. It is probably jetted pretty close for a 71 BB but not correct for a numbers matching car. Also, when you get the rigt one let me know if you need the correct choke assembly as shown in my attached pic. As you know, your choke rod is not correct either. Best

If you have a numbers matching car it should have the correct carb to be complete along with the alternator, water pump, etc. The safest thing to do is disconnect the choke until you get the correct carb. The slot and choke rod are compatible.

Hey Glen, I was just browsing through forum posts and saw yours. The picture showing your Carter built Qjet shows it is a 1970 carb. 7040200 in 1970 were on small blocks. You are correct in your later post that 1971 big blocks used 7041200 for automatic cars. I was in error saying your carb should be number 7041204 because its for a corvette which always had a higher HP rating. Hope this helps.

Great idea! Much better than using a come a long attached to a tree😃

Someone with a documented LS6 car without the correct motor would love to buy it to complete his car. As stated before, if it has factory 4 bolt main caps it definitely is a LS6 based on the late 69 date code. 360/390 hp Corvettes were LS 5 which have 2 bolt mains. If you would like to verify what it is you can reach out to Chris White in New York or engine builder known as big block Bruce who is an expert on this topic. Otherwise you only have hobbiest opinions to go by. Best

I dont think they were ever used on Montes . Corvettes had them on big blocks.

I think another members comments are correct. If it's a 1968 , 512 block then it was a 427 engine before being bored