Kool88vette

A couple of weeks ago we had a thread on an oil pressure issue. Thanks for some of the comments and some of the suggestions. The discussion got a little nasty. The problem was at WOT my oil pressure would drop like a rock and bounce back up a few seconds later. I fixed the problem. The problem was at WOT the oil was forced away from the pickup. This is not a problem under ordinary driving conditions. It did not occur on the freeway. It only happened from a dead stop when I nailed it. It happened because my OEM oil pan has no baffles. I just installed a new Canton oil pan and pickup. The issue has been resolved. I am posting this so next time this issue comes up we can give out some accurate info. PEACE

jrzyvet

Yeah I actually mentioned this problem in my oil pressure post a while back. I am going to try what you did as well. Had a mechanical gauge hooked up and my car has great pressure, but WOT it drops. Thanks for the info>

Kool88vette

Canton has 2 pans that will fit. One is a high capacity, holds 7 qts. It's a low profile and is good if you Vette is lowered. I guess it is better for a race car. The other looks like an OEM but it has baffles that keep the oil from being forced away from the pickup. The OEM looking one is much cheaper. Get their pickup to match the Canton pan. My oil pan had a dent in the bottom. That was another reason why I replaced it. A much cheaper solution is to buy one of these. http://store.summitracing.com/partde...0&autoview=sku

LD85

Since I don't road race, I got a Champ drag race pan that has baffles, so evidently baffles are just a good idea for spirited driving, thanks for the update

larryfs

is this a common problem on a TPI motor??

Kool88vette

This is my opinion and I'm no expert. Just ask some of the other members. My answer is yes and no. It's a problem if you launch your Vette hard. Turn on your oil pressure and see if it drops from a dead stop at WOT. If you don't drag race or step on it then you shouldn't have a problem. Also, I don't know if all C4s are devoid of baffles.

Slalom4me

The stock pan in my '89 pan has sizable tray over the forward side of
the sump. There is a windage tray mounted to main cap studs over
the rear portion of the sump.

I know this design is used on later engines, including the LT1 and I
believe the LT4, too.

A dented pan bottom could contribute to oil starvation issues on
hard acceleration by reducing the pickup-to-pan clearance, thus reducing
pickup inlet area and increasing chances of pump cavitation.

The design of the Canton 15-240T RR pan places the pickup further
rearward compared to the OEM design. This may be beneficial under
acceleration, but it is counter-productive under hard braking.

I am not familiar with the sump layout or pickup location the Canton
OEM-like pan mentioned by Kool88vette.

.