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#1
12-14-2008, 11:21 PM
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valley cover bolts
I am going to use a 68-72 valley cover with my roller cam set up... and my cover now is the egr style with the bigger dip... are the bolts a different length? really only need to know the length? I am sure any good bolt will work thats the right size....
thanks
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Darby 74 Grandville 2Dr 455 c.i 4550# 2011 1.60 60 ft,7.33@94.55-11.502@117.74  2017, 74 firebird -3600 lbs (all bests) 1.33 60 ft, 6.314@108.39 9.950@134.32 M/T 275/60 ET SS Drag Radial 2023,(Pontiac 505) 1.27 60 ft, 5.97@112.86, 9.48@139.31.... 275/60 Radial Pro's |
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#2
12-15-2008, 12:10 AM
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Hi Darby!!
Two things to watch out for: 1. You must be very careful on attaching the valley pan! On most Pontiac blocks, not all, the holes that hold the valley pan on are drilled through to the #2 and #4 cam bearings. If you use too long bolts, or tighten them too tight, you can go right through and put a wedgie on the cam bearings. If in doubt, count the number of turns,(usually 14) before the bolt bottoms out and don't go beyond that point!! 2. On some roller lifter/cam combinations the lifters will hit the bottom of the valley pan. Most of us with big roller cams, use an aftermarket valley pan that is flat, for that purpose. I don't think you'll have a problem, but test fit the valley pan without a gasket and roll the engine over a few times once the valve train is installed to insure clearance. I'm back in MN now for the holidays - so you can call me if you want, Bill
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GT37 3625lbs..Fastest bench seat, column shift, all steel,no power adders car at Norwalk 1.35 w/29.5x10.5x15 6.42 @ 109 10.09 @ 133 |
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#3
12-15-2008, 08:08 AM
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Thanks Bill!!... Can u Pm me your number? I will call later today after work ok...
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Darby 74 Grandville 2Dr 455 c.i 4550# 2011 1.60 60 ft,7.33@94.55-11.502@117.74 2017, 74 firebird -3600 lbs (all bests) 1.33 60 ft, 6.314@108.39 9.950@134.32 M/T 275/60 ET SS Drag Radial 2023,(Pontiac 505) 1.27 60 ft, 5.97@112.86, 9.48@139.31.... 275/60 Radial Pro's |
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#4
12-15-2008, 09:15 AM
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I modified my '76 valley pan to clear the Crower roller lifters. It isn't pretty from underneath but from the top looks borderline stock. It took about 15 minutes with a hammer. If I don't like it or want to change, I'll wait until Ace gets his repro valley pans on the market. Finding a good, clean, used early pan for a decent price is not easy.
Stewart
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1976 TA, nose converted to 1970 style, 406, ported #13 Heads, '70 iron intake without crossovers, Q-Jet - Cliff style, RARE OS manifolds, Pypes duals w/crossflow, UD 230/238 custom HR 4/7 swap cam with solid roller lifters  , Hydro-Boost 4-wheel discs, 4 Speed, 3.23 posi.“Nothing in life is so exhilarating as to be shot at without result.” - Winston Churchill |
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#5
12-15-2008, 09:38 AM
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Yea I got this one from Dave at SD.... ,But I am not sure if the later ones need longer bolts.... Ive only owned this 74 one that i have had tore down so i don't know the lengths...
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Darby 74 Grandville 2Dr 455 c.i 4550# 2011 1.60 60 ft,7.33@94.55-11.502@117.74 2017, 74 firebird -3600 lbs (all bests) 1.33 60 ft, 6.314@108.39 9.950@134.32 M/T 275/60 ET SS Drag Radial 2023,(Pontiac 505) 1.27 60 ft, 5.97@112.86, 9.48@139.31.... 275/60 Radial Pro's |
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#6
12-15-2008, 10:34 AM
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Why not just use studs?? Dry fit a pair to check the length and make sure you have sufficient thread engagement for nuts.
You won't have to worry about interference with cam bearings, you can use blue Loctite on the threads to hold them into the block to the right length, and you can use TH-400 pump sealing washers under the nuts. Besides, it makes assembly of the pan to the block easier if you're using sealer. |
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#7
12-15-2008, 10:38 AM
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I could do that i guess?...
__________________
Darby 74 Grandville 2Dr 455 c.i 4550# 2011 1.60 60 ft,7.33@94.55-11.502@117.74 2017, 74 firebird -3600 lbs (all bests) 1.33 60 ft, 6.314@108.39 9.950@134.32 M/T 275/60 ET SS Drag Radial 2023,(Pontiac 505) 1.27 60 ft, 5.97@112.86, 9.48@139.31.... 275/60 Radial Pro's |
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#8
12-15-2008, 10:58 AM
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you may have to "massage" the bottom of your pan for clearence.....we just did one on a friends roller setup ...tough to tell how much they will hit....do what Bill mentions to get an idea......
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71 GTO, 463, KRE 295 cfm heads ported by SD Performance, RPM intake, Qjet, Dougs Headers, Comp cams HR 246/252 ...11 to 1 , 3.55 cogs, 3985lbs.....day three- 11.04 at 120mph ....1.53 60', 6.98 1/8 mile |
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#9
12-15-2008, 11:40 AM
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Mike... This one From SD is already done on the bottom thats why i got it.... Trying to get a idea for bolts as i am doing it this weekend!
 ... ,But Not tearing it down til friday.. Just want everything i need when we do it!... You know me!
__________________
Darby 74 Grandville 2Dr 455 c.i 4550# 2011 1.60 60 ft,7.33@94.55-11.502@117.74 2017, 74 firebird -3600 lbs (all bests) 1.33 60 ft, 6.314@108.39 9.950@134.32 M/T 275/60 ET SS Drag Radial 2023,(Pontiac 505) 1.27 60 ft, 5.97@112.86, 9.48@139.31.... 275/60 Radial Pro's |
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#10
12-15-2008, 12:03 PM
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Quote:
 As you can see from the pix this was a deep tissue massage not some wimpy backrub. I made sure that when I pushed the lifters up so the top of the oil groove was even with the lifter boss there was clearance between the lifter bars and the pan, i.e., full unencumbered movement. They will never this pan unless everything grenades.Oh and BTW, the bolts for a stock '76 pan are 3.125" from the bottom washer surface to the end of the bolt. Stewart
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1976 TA, nose converted to 1970 style, 406, ported #13 Heads, '70 iron intake without crossovers, Q-Jet - Cliff style, RARE OS manifolds, Pypes duals w/crossflow, UD 230/238 custom HR 4/7 swap cam with solid roller lifters , Hydro-Boost 4-wheel discs, 4 Speed, 3.23 posi.“Nothing in life is so exhilarating as to be shot at without result.” - Winston Churchill |
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#11
12-15-2008, 12:52 PM
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Jeez Stewart, that sure is a 20 footer!
 Kinda reminds me of a one night stand...particularly the next morning! 
__________________
 ___________________________________ "Objects in mirror are closer than they appear"
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#12
12-15-2008, 01:46 PM
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Quote:
 The harsh light of the camera don't do it any justice. Besides it'll be under the intake and effectively unnoticed. OK, so I need to smooth it out a bit more. It hasn't cost me anything but time. I'll have to take your word on the one-night-stand though. I never dated an ugly women! Stewart
__________________
1976 TA, nose converted to 1970 style, 406, ported #13 Heads, '70 iron intake without crossovers, Q-Jet - Cliff style, RARE OS manifolds, Pypes duals w/crossflow, UD 230/238 custom HR 4/7 swap cam with solid roller lifters , Hydro-Boost 4-wheel discs, 4 Speed, 3.23 posi.“Nothing in life is so exhilarating as to be shot at without result.” - Winston Churchill |
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#13
12-15-2008, 01:51 PM
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That's the whole point of the one night stand. You don't HAVE to date them!
__________________
___________________________________ "Objects in mirror are closer than they appear"
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#14
12-15-2008, 02:21 PM
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Quote:
Stewart
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1976 TA, nose converted to 1970 style, 406, ported #13 Heads, '70 iron intake without crossovers, Q-Jet - Cliff style, RARE OS manifolds, Pypes duals w/crossflow, UD 230/238 custom HR 4/7 swap cam with solid roller lifters , Hydro-Boost 4-wheel discs, 4 Speed, 3.23 posi.“Nothing in life is so exhilarating as to be shot at without result.” - Winston Churchill |
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#15
12-15-2008, 03:19 PM
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Thanks Stewart!... I talked with Dave too.. and he said he uses 3" Grade 8 so thats what i will get....
__________________
Darby 74 Grandville 2Dr 455 c.i 4550# 2011 1.60 60 ft,7.33@94.55-11.502@117.74 2017, 74 firebird -3600 lbs (all bests) 1.33 60 ft, 6.314@108.39 9.950@134.32 M/T 275/60 ET SS Drag Radial 2023,(Pontiac 505) 1.27 60 ft, 5.97@112.86, 9.48@139.31.... 275/60 Radial Pro's |
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#16
12-15-2008, 03:27 PM
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__________________
___________________________________ "Objects in mirror are closer than they appear"
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#17
12-15-2008, 10:01 PM
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Valley cover bolt length...
1959-1967 cover, pcv in rear, small baffle, has two notches on each side to clear intake manifold runners. GM part number 9778955, bolt length, front 2" rear 2-1/2".
1968-1972 cover, pcv in front, larger baffle, no notches for intake runners. GM part number 9790338, has two pyramids on top, bolt length 3-1/4" front and rear. 1973-1979 cover, pcv in front, largest baffle of all, no notches for intake runners. GM part number 489823, egr hump stamped in the center of cover, bolt length 3-1/4" front and rear.
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"Three may keep a secret, if two are dead" ~ Benjamin Franklin ~ |
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#18
12-15-2008, 10:44 PM
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Thanks Robert!
__________________
Darby 74 Grandville 2Dr 455 c.i 4550# 2011 1.60 60 ft,7.33@94.55-11.502@117.74 2017, 74 firebird -3600 lbs (all bests) 1.33 60 ft, 6.314@108.39 9.950@134.32 M/T 275/60 ET SS Drag Radial 2023,(Pontiac 505) 1.27 60 ft, 5.97@112.86, 9.48@139.31.... 275/60 Radial Pro's |
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#19
12-15-2008, 11:14 PM
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Valley pan?......EGR hump?......One night stand?.....Date an ugly woman?....It's nice to see our members in a jolly mood!
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Reality is the ultimate payback |
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