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Originally Posted by SR5 Nice, 1230 ppm Zinc for an SN oil. Looks perfect for a motorcycle or an old school flat tappet engine. Good TBN from a modern Ca & Mg detergent package, plus ~60 ppm Moly, and 125 ppm Boron. Looks good to me. Yep! i just broke in a ford cleveland solid flat tappet...

thanks for the report. I've been using mobil 15-50 in flat tappet oval dirt cars and never had an issue.

But motorcycle EFI is generally pretty primitive...don't many of them STILL always run open-loop? No.

Originally Posted By: OVERKILL Originally Posted By: Mesozoic 3.50 rear gears will be fine, but I would've definitely run Ford EEC-IV or EEC-V EFI and use a 4R70W transmission. As for oil, I like the 5W-40 Rotella once it's broken in, 15W-40 dino Rotella for break-in. EEC-IV conversion is...

Originally Posted By: Merkava_4 With a high lift cam a 2:90 gears, it's gonna be a dog off the line - and I mean real bad. I would've went with a stock/mild cam and massaged the heads a little bit. Probably would've went with an EGR delete intake manifold and port matched it to the heads. We...

Originally Posted By: OVERKILL Originally Posted By: ssregal39 I've been thinking about changing the gear and probably will at some point. It has an 8.8 out back right? I'm not super familiar with that car, that's why I'm asking. 9" so I have a bazillion ratios to choose from. An AOD would be...

I've been thinking about changing the gear and probably will at some point.

Thanks for the suggestions so far. =)

Originally Posted By: BrocLuno 1.) There's a long thread here somewhere where RAT's testing has been dissected at length. I do think he has something to contribute and I correspond with him on oil testing occasionally. BUT, his whole test scenario was to figure out an oil/additive combo to keep...

2.90 I think.

Originally Posted By: OVERKILL I'd probably look at the Weiand Stealth for this setup FWIW. I think I agree. Or the RPM.

Originally Posted By: skyactiv Don't believe everything you read, but regardless, this is an interesting website: Scroll down a million words if you wanna see his test data. https://540ratblog.wordpress.com/2013/06/20/motor-oil-wear-test-ranking/ I've looked at this, a few times. I don't really...

Originally Posted By: ShotGun429 We do hundreds of performance builds here,The Valvoline VR is a great choice, We sell alot of Brad Penn (Now Penn Grade) for the flat tappet customers, never a problem with a customer. 110 pounds on the seat is a good number. Gregg Cool.

Originally Posted By: OVERKILL That is going to be a TOTAL sleeper, LOL! You keeping the old hubcaps and everything on it? I just may keep the hubcaps (kinda want some magnum 500s) and yes SLEEPER is the key here. Quiet mufflers too.

This is my Grandmothers old car. She took a dirt nap 12 years ago and nobody wanted the car so they put it in storage until I took it a year ago. I figured I'd hotrod it a little. Cam is a Howards 220991-08 but ground on a 112 instead of 108. No intake recommendations.

Originally Posted By: OVERKILL What are the rest of the details on the combo? I'd just run Delvac 1 5w-40 if you can get it. An HDEO is a good choice for FT rigs with higher levels of AW additives, yet readily available. .030 over with Icon forged pistons 9.7:1, stock crank .010/.010, N351...

$$$$ I really wanted to but, cost was a major factor. Almost $700 just for the cam and tie bar lifters. FT was 175.

I'm in the middle of building a 351W for a 78 Thunderbird. I haven't messed with a flat tappet cam since 2008. The hydraulic flat tappet cam will have about 110 pounds on the seat and 270-300 open. .576" lift with 1.7 rockers 220* at .050 duration. Obviously use the cam lube for break in but...