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torque sequence of 4th gen firebird LS1 water pump
torque sequence (order to tighen) of 99 firebird LS1 water pump. I searched joogle an firefox all they seam to share is intake manifold.
my new AC delco won't send new bolts I hope I can reuse the old bolts.
thnks
FYI - If you ever need these manuals for a project but don't have the books, you can get 3 day subscriptions to all GM's manuals at this site for $22: https://www.acdelcotds.com/subscriptions
^ In addition to manual access for all cars, you can also download and print TSBs and a lot of other documents.
I have the 2002 fbody Service Manual set and it shows the 11 lb ft (15 N-m) and 22 lb ft (30 N-m) specifications. Not sure if there are differences between 2000 & 2002 but it appears the specifications are the same.
The 1998 Helms (official GM) service manual does mention the 11 lb-ft 1st pass, 22 lb-ft final pass, but no mention of a sequence. I seem to remember that the '98s used a different water pump gasket though, at least originally, so maybe that's part of the difference? Although someone mentioned above that the 2002 manual also states this "double pass".
I have the 2002 fbody Service Manual set and it shows the 11 lb ft (15 N-m) and 22 lb ft (30 N-m) specifications.
The 11 lb ft number is for the V6 engine's water pump. GM's Service Manual then calls for an additional 80 degrees of turn on the bolts. (V6 only)
The 22 lb ft number is for the V8 water pump bolts. There is no progressive tightening called for, although I personally do this any time I am seating a gasket.
Originally Posted by LilJayV10
GM service manual off Identifix
Identifix doesn't say they have the actual GM service manuals. They say they have "OEM information" and "same as" information, just like the other third parties.
Originally Posted by RPM WS6
The 1998 Helms (official GM) service manual does mention the 11 lb-ft 1st pass, 22 lb-ft final pass, but no mention of a sequence.
We have seen these problems a lot with the third party manuals on the F-Body. It looks like Helms and the other 3rd party providers have a transcriber copying data out of the GM Service Manual tables and then plugging that information into automotive Mad Libs to arrive at their repair procedures. (We are a little luckier as the people doing this in 1998 would have understood English. Today ...probably not.)
With the 2 engine choices on the cars, GM comingled the repair procedures. The torque tables work well for the common parts but get confusing for differentiated components. One needs to read the full procedure to confirm the context, precise numbers and the finer details.
^ In this case, these numbers wouldn't do any harm on a V8, but I hope the folks with a V6 have things straight and aren't cracking pump housings.
The actual GM Service Manuals are really good on these cars. Aside from the old magazines I still hide under the mattress, these may be the only items I still have in print.
The 11 lb ft number is for the V6 engine's water pump. GM's Service Manual then calls for an additional 80 degrees of turn on the bolts. (V6 only)
The 22 lb ft number is for the V8 water pump bolts. There is no progressive tightening called for, although I personally do this any time I am seating a gasket.
WRONG!!! I don't like being called out by someone when I post information from the 2002 GM Service Manual as I stated before. You can see from page 6-744 it says for a 5.7L not a V6. See the attached pics since you don't believe me.
We have seen these problems a lot with the third party manuals on the F-Body. It looks like Helms and the other 3rd party providers have a transcriber copying data out of the GM Service Manual tables and then plugging that information into automotive Mad Libs to arrive at their repair procedures. (We are a little luckier as the people doing this in 1998 would have understood English. Today ...probably not.)
With the 2 engine choices on the cars, GM comingled the repair procedures. The torque tables work well for the common parts but get confusing for differentiated components. One needs to read the full procedure to confirm the context, precise numbers and the finer details.
^ In this case, these numbers wouldn't do any harm on a V8, but I hope the folks with a V6 have things straight and aren't cracking pump housings.
The actual GM Service Manuals are really good on these cars. Aside from the old magazines I still hide under the mattress, these may be the only items I still have in print.
^ This is interesting, I thought Helm was synonymous with official GM manuals. I guess I was mistaken. So who is the original printer for GM-authorized manuals obtained by the dealers? Does GM just do those in-house, and/or can those same originals be ordered from that source?
So do you agree that in the 2002 manual that it shows a 11 lb ft and then a 22 lb ft torque spec sequence? If not, then please explain the print in my manual.
So do you agree that in the 2002 manual that it shows a 11 lb ft and then a 22 lb ft torque spec sequence? If not, then please explain the print in my manual.
I'm not sure who this was directed at, but yes I agree. I mentioned above that my '98 GM manual (from Helm) shows the same as your 2002 manual. In fact, it looks like my 2000 manual does as well.
But now there seems to be some question about whether or not the Helm printed product is actually the "official" GM service manual. I always thought it was, otherwise I wouldn't have paid so much for them. In fact, I'm pretty sure I ordered my 2000 set directly through a GM dealer back when that was still a current model year.
Not arguing about a name at all. I was responding that was what my manual as pictured said about the two step process. I replaced mine once and helped friends replace several others since I bought mine new in 2002 and honestly don't remember the last time I looked up a water pump install - probably 7 or 8 years ago.
Not arguing about a name at all. I was responding that was what my manual as pictured said about the two step process. I replaced mine once and helped friends replace several others since I bought mine new in 2002 and honestly don't remember the last time I looked up a water pump install - probably 7 or 8 years ago.
I think you might be confusing my posts with wssix99. Your GM manual has the appearance of a Helm product so it's probably from the same source as my '98 and '00 data. We are not in disagreement.
But I think that wssix99was indicating that perhaps Helm is not the official printer of the original GM manual (and that what you and I have are transcripts). If that is so, it's news to me as well. I didn't think that GM printed copies for all their dealers in-house, I figured it was outsourced to Helm (thus they were authorized to sell "originals").
I dug up my 2000 model year manuals (set of three volumes), they have the same exact cover as shown in Post #4 above. I also still have the original box that they were shipped in, and it turns out my memory was correct - I did order them directly from a (then) Pontiac dealer. I took a picture of the first page, inside of volume 1. The publication data seems to suggest that these are "official/authorized" GM service manuals:
WRONG!!! I don't like being called out by someone when I post information from the 2002 GM Service Manual as I stated before.
Thanks for using the real deal manual. When you mention it, please call out that it is the 'GM' service manual. Folks are running all over waving their Chilton's manuals all over the place.
Originally Posted by RPM WS6
But I think that wssix99was indicating that perhaps Helm is not the official printer of the original GM manual
@wssix99 was having a galactic brain fart in his earlier comments about Helms. Please scratch them from your mental record. Helm Inc. is indeed the official GM publisher and has been for decades. I was thinking "Chiltons" when I wrote my earlier comments. Helm is the real deal.
It looks like GM/Helm changed this procedure between 1999 and 2000. (As mentioned above, the difference is generally benign.) Here are the 1999 manual pages:
Odd that GM changed this. (I didn't see a manual correction for my edition, either.)
Maybe this is a sign that GM was having issues with the water pump leaking early in the run of the LS1 engine and that they were starting to fiddle with the install procedure before they eventually substituted the part for a new design when the GTO came out?
Its also interesting that the 2000+ manuals seem to have more pages for all the additional add-ons GM made over the years. I feel lucky (like the OP) to have owned a sleeker 1999 model before GM weighed the car down with so many additional mass and made it slow.
02-21-2024, 09:25 AM
torque sequence of 4th gen firebird LS1 water pump 
