The "OFFICIAL" modified 308 pic thread.

GrimGreaser

Awesome set-up. Looking at these high-end big sixes gets me fired up. I have a Ford 300 Big Six waiting for money to be hot-rodded, and I plan to hop-up my 308 as I get the chance.



Speaking of hopping up a 308, could I get a little more info on your HEI setup? Did you do all the work, or is that from Uncommon Engineering or someone else? Is it a simple adapter that replaces the stock gear/pumpdrive along with whatever machine work needs to be done for the dizzy to fit the hole on the engine?

super651

Thanks so much Chuck, Ron and I are looking for another one so we will build it like yours. Is the center counter weight close to hitting the adaptor ? How close is it ? Pal Rudy

Ol racer

Rudy,

I removed the short shaft from the Chevy then cut off a Hudson shaft at the desided length to reach the oil pump.

Then I had a new V8 Bronze gear teeth machined off then had the inside honed to only a few thousanths press fit onto the Hudson shaft. I also notched the Hudson shaft at the top to fit the Chevy 'slot' and probably didnt need to pin, but did 180 apart.



The Counter Balance clears fine but I ground the lower part of the adapter a little more as extra assurance. Lastly, It requires modifying a Chevy Dist Clamp and I put a stud in the block rather than bolt.



However, Randy races hard using a stock Hudson Distributor with electronic pickup inside so this HEI may be overkill....

[Deleted User]

Hi Chuck, See you're running red paint now. If you go faster than me I may have to repaint mine. Looks Great! The only thing that might concern me a little is the position of the fuel pump in relation to the gas tank as far as height is concerned. May need to lower it--maybe not. Keep up the good work. I have a good feeling on this one for you. You have more than paid your dues. I hope you run 12 seconds.



Randy

Ol racer

Thanks Randy,

I would be happy with 13sec in a Step Down, You raise a great point about pump location. I seen a Pro Mod last wk with a front tank, Dont have room to drop and with the F/Cell below floor may have to add tank. Need to revise all Lines anyway.

Attached different picture. Chuck

GrimGreaser

Thanks for the info on the HEI, Ol Racer. You got one hell of an engine there.

Ol racer

Randy.



Lowered the pump down as far as pssible below injectors. Great observation.



Thanks,

Chuck

Ol racer

FYI



Cant do any more 'plumbing' until after in chassis. so going to take little break to get the St. Rod Hudson out of the bay ...

super651

Ol racer wrote:

FYI



Cant do any more 'plumbing' until after in chassis. so going to take little break to get the St. Rod Hudson out of the bay ...

Ckuck, can you show other side where you connect the High Side of Water pump to?

Sure looks Super Nice to all of us Locals. Pal Rudy

super651

super651 wrote:

Ckuck, can you show other side where you connect the High Side of Water pump to?

Sure looks Super Nice to all of us Locals. Pal Rudy

The picture is out of focus on my poor Comp. of the other side

Ol racer

Rudy,

Scroll up the page and there is a better picture of the Left Side....I didnt have the heart to drill into the Block (after losing one last yr) so to improve cooling on the left Side I drilled and tapped the front & rear Soft Plugs and installed 1/4NPT Nipple, then modified the water pump from details on an earlier Post (I think the Post was from you in this modified 308 Thread). I also added a nut on the nipples against the soft plug for support.



Its coming together but dont mean much until Track Tested.....

[Deleted User]

Hi Chuck (Ol Racer).--Probably didn't have to do the bypass since we only run the 1/8 or 1/4 mile racing. If you were stock car racing I would do it. The biggest heat problem comes from exhaust gasses passing into the water passages when we used the old fel pro gaskets with added compression. The new (Best) type gasket has solved that problem. I leave the line at 180 and come back the return road 180-200 degrees. Used to be 225-240 with old style gasket.



You're gettin er done!



Randy

Ol racer

Just a little update on my Drag Project.

The motor is now in the chassis and been doing major changes on fuel lines, brackets, adding Shut off valves, etc. Doesnt sound like much but been slow going losing days on the simplist things so dont have to re-do something later. I never ran F/Inj before so its been an enjoyable learning experience.

My goal is to at least Test & Tune the Car before snowfall then (If no major bugs), plan to lighten front end by installing Mustang11 tubular suspension, with R & Pinion.......

Ol racer

FYI

Update on my Project with couple pictures.... Been working on it daily trying to get a Test & Tune run before snow falls here.. Difficult to see, but Motor set back has last 3 cyl's under dash below heater 'box'. Placed motor low so have room to remove head over studs. All Fuel Lines & shut off Valves installed now. Installed Ram Air Set-up. Put Tee in NOS fuel line to prime injectors before starting when belt pump will take over. Headers straddle inside & outside of Frame rail. Almost ready to fire up but need take time off for our Golden Anniversary.