572" A460 hydro roller street strip track engine

My favorite drag racing pass ever was in LA when Bill motored by be at half track with the afterburners lit in the jetcar. Hell I think I even had time to read his scoreboard.

just guessing, but I think he'd LOVE to dive into the 8's.....

Dream wheel says 8.69 @ 154 with a 3200# race weight. I'm not sure I can get it that light though. James, I forget what does yours weigh ready to go with you in it?

It was 3315 on the scale at topeka w/o 200lb me in it. I have done nothing to make it lighter. It still has all the full interior, factory hvac stuff, steel hood and the battery is up front, etc.

8.69. Wow! That would be a game changer for BB/NA

Damn 9.69 all motor! Your car is no joke. I happen to like barges. My truck weighs 4100lbs and i have brick like aerodynamics on top of that lol. Drives nice on the street and runs ok at the track but mild compared to your combos. Any reason not to throw some nitrous at it?

Bill. Just saw your boat 3 or 4 times on Hot Rod TV coverage of Drag Week. So cool.

I have a Wilson Pro-flow fogger setup for it that we haven't used yet. All plumbed but not fully wired. For the Hot Rod Drag Week deal we do that's a change of class which is one route. The Street Race classes with big blocks, N/A or power adder are chassis limited to 8.50's. Not that I'm close to that ET either way at the moment. I plan to run a couple NMCA events later this Spring/Summer and see how it goes on the happy gas.

Sweet deal that thing should really fly on a nice hit. That would be a race gas only deal though but surely it would go easy 8s depending on the converter. Is your car still an AOD?

Its a wet system so I have a separate 5 gallon cell for the N2O side and I plan to run 100 unleaded in the main tank and VP N2O in the small cell unless I am told to run something with more octane in the main tank. Jets for 150-500 and its set up with Wilson's progressive box so timing and quantity is fully adjustable.

The AOD and converter are 'supposed' to be good to 1400 HP, but I have serious doubts. It did go 5 years before refresh in the N/A useage and for the rebuild last Summer we added Kolene blues and a few other little bits to try and make it live. I have a nitrous specific converter which isn't in the car at the moment but I find that converters are an educated guess and usually require an adjustment or two to get right for the particular combination.

BTW, love the truck.

Thanks man. I have a similar set up in my truck. Pump gas in the stock tank and a 1 gallon cell up front for the nitrous. Sorry for the hijack. That car will roll with the juice no doubt. Interested in the hyd roller set up too.

Back on the hydro roller question. There seems to be a trend towards running very low travel set-ups in higher RPM, heavier valve train applications. This is reflected in the newer Comp Cam short travel roller lifters and with some advice I've seen on running hydro rollers with as low as .020" remaining travel.

Has anyone here played with low travel hydro rollers or made effective use of low travel adjustments to maintain control of the valve train? Is there anyone left who runs a hydraulic roller in a BBF?

You found out any more on this? Chompin at the bit here.

windsor wrote:Again, very fascinated by your goals this time around. I've always wanted hydroroller but ears so many negatives on these boards about them. I believe a460 heads have a heavy valve but I really hope this works for you. Definitely subscribed. My goal is drag week 14

Hydraulic roller lifters are by themselves fine but, have several drawbacks when used in a 335 or 385 series engine.

Randy, can you elaborate without giving away hard won engine knowledge?

I've had slight set back as my 588" dropped a Ti intake likely due to valve spring failure and between valve spring and valve shrapnel it dinged up the pistons the rods and crack, heads etc. Clearly need to change springs more frequently. I check them with an LSM on-rocker pressure tester when checking lash but lost one anyway.

I'm still going to build a milder 572" but the hydro roller feedback hasn't been very positive so I may have to stick with a solid roller to get the power level and rpm I've targeted, 750 to 800 at 6000-6500 Rpm.

As an aside, the Isky .903" EZ roll max lifters came out of the bushed lifter bores looking perfect. The cam looks good too, the one part that didn't see the pinballing bits. I think I've found the perfect heavy street miles, 100+ passes a year lifter for moderate power BBF's. At least for me.

Bill - sorry to hear about your 588.

Have you made any decisions on this HR or SR issue?