Donebrokeit Reader
July 24, 2011 11:02 a.m.

Well I bought a 1988 Ford F350 (Roll back) over the weekend with a 460 V8 four speed trans (stick) and have a question about oil pressure and coolant temperature. The factory instrument cluster dose not seem to work very well and I do not trust it.

Ambient air temp 102* (F) for all readings.

Cold oil pressure 60 PSI

Hot oil pressure 26 PSI

Hot oil pressure at 2K RPM (round about) 45 PSI

Water temperature measured at radiator neck 160* (F) after running for about one hour.

Now I am a Mopar guy myself but I have worked on a number of Fords over the years the number I have posted do not raise any flags for me, another person thinks the oil pressure is to low.

So before I go putting real money into this truck I want to make sure the engine will hold up. The truck made a 250+ mile trip on a recored breaking hot day.I would think if it made it through all of that the engine must not be in bad shape.

Thanks Paul B

Ranger50 Dork
July 24, 2011 11:08 a.m.

Seems good to me. The old rule of 10psi hot per 1000 rpm is a good one to follow. Looks like someone swapped the thermostat at some point for a way too cold version, I prefer no lower then 180F, to combat overheating or the fallacy of increased performance.

triumph5
triumph5 SuperDork
July 24, 2011 11:13 a.m.

Key: what's the oil weight? If that's with 10w/30, that's great. If it's with straight 50w, then, well... However, considering the temps and the trip you took, I think you'll be OK. They are known for their ability to generate a LOT of torque down low, and with a simple cam and intake change, much, much more.. Both changes are not expensive, either. 45 psi at 2k, on a broiling day, and the year, sounds acceptable. The rule is at least 10psi of oil pressure for every 1k rpm. Coolant temp sounds OK, too.

Donebrokeit Reader
July 24, 2011 11:33 a.m.

The oil is black as coal so I have no ideal of the weight. I plan to change it today or tomorrow.

Thanks Paul B

93gsxturbo
93gsxturbo HalfDork
July 24, 2011 1:50 p.m.

Given the year and type of use it has seen, I would also consider 10 psi per 1000 RPM to be fine.

As long as the oil doesnt have any metal in it and it doesnt rattle, I would run it till it pops, no matter what the gauges say.

Even if it had metal in it, I would still run it till it popped.

You'll need to log in to post.

Also on Grassroots Motorsports

We're Back In Monterey for Car Week

6 hours ago in News

And so it begins, another trip to Monterey Car Week.

Mark Your Calendars: August 18 Is Wear Your Helmet to Work Day

16 hours ago in News

Wear your racing gear to work and win prizes.

Your Projects: Wide-Body, V8-Powered Porsche 944

17 hours ago in News

Wing, flares, V8 swap and more!

You Need This: A Real 1LE Camaro

18 hours ago in News

Chevy only built 62 1LE Camaros that year.

Little Car Show: Celebrating All Things Quirky and Small

1 day ago in Articles

As the name suggests, the Little Car Show is all about little cars.

Concours d’Lemons to Ruin Monterey Car Week Yet Again

1 day ago in News

What started as the anti-concours has transformed into a major event on the Monterey Car Week schedule.

You Need This: A Quite Eye-Catching Green Over Red Ferrari

1 day ago in News

Not your usual Ferrari color combo.

Your Projects: JDM Autozam AZ-1 Kei Car

1 day ago in News

What are the realities of importing a JDM kei car to the U.S.?

Bid on a New Helmet and Save Some Puppies and Kittens!

1 day ago in News

Four helmets will be auctioned off.

Tonight on Grassroots Motorsports LIVE! Lee Grimes of Koni Shocks

2 days ago in News

This may shock you, but suspension is arguably the most important part of going fast.

Classic Motorsports Monterey Welcome Party Welcomes 2000-Plus Gearheads

2 days ago in Articles

Last night we threw a party, and more than 2000 people came to celebrate.

You Need This: E46-Chassis BMW M3 for $6000!?

3 days ago in News

Could this M3 donate its heart to your next project?

OUR SPONSORS

Grassroots Motorsports Magazine

Subscribe Today

Also get your instant access to the digital edition of Grassroots Motorsports Magazine!

Learn More
mS1qlY4XfPPEjp88J3IBXpVDdblF4IzY