MY 375ci SBO

[jeremys442]

Here's my small block Olds build list......

350 Olds gas block bored 4.1250 with torque plate, decked to 9.300"
330 Olds steel crank, stroked to 3.500, machined for Cheby rods
Eagle, Cheby 6.0" 500 gram h-beam connecting rods
J&S 5 main halo girdle
ARP head studs, main cap studs, connecting rod bolts, etc.
Custom CP forged pistons 12.5:1 compression
Edelbrock heads, decked to 60cc's and CNC ported by Bill at Btr Performance
Cometic Head gaskets
Custom Cams Competion Hydraulic roller cam spec'd by Bill at BTR dur @ .050 245/248, lift .561/.580 106 intake centerline
Competion Cams matching roller lifters
Competion Cams dual valve springs for Hyd roller cam
Competion Cams custom length 3/8" push rods
Harland Sharp 1.7 roller rockers (makes valve lift .597/.618)
BTR double roller timing chain
OPP Cam Button w/roller bearing
ATI super dampner balancer
ATI flyweel
Edelbrock victor intake, heavily ported by Bill at Btr and gasket matched
1000cfm FAST fuel injection system Ez-EFI
Melling high volume oil pump
Moroso 7 qt oil pan
BTR backgrooved cam bearings, oil hole at the 4 o'clock postition
Clevite main and rod bearings. Main clearance .035" Rod clearnace .003"
DUI HEI distributor
CSR electric water pump
Summit Mini stater
MSD 10.5mm spark plug wires
MSD 6al Igntition
NGK spark plugs
Hooker Super Comp 1-3/4" coated headers with elctronic exhaust cutouts
3" exhaust to x-pipe, to 3" Flowmaster Super 40 series mufflers, to 3-1/2 dumps

Hoping for 550 + hp and 500 + tq
Should be firing up in the next month or so.......

 

[1SlowBu]

Very Nice

 

[DRIVEN]

Similar dimensions to the 377 Chevy that the circle track guys used to love. Should be fun!

 

[online170]

Thats a serious engine. 550hp is no joke even for a big block.

What sort of flow are you getting through the heads? What is the final compression ratio? What size headers?

Should be a serious car when you get her going.

 

[jeremys442]

Thats a serious engine. 550hp is no joke even for a big block.

What sort of flow are you getting through the heads? What is the final compression ratio? What size headers?

Should be a serious car when you get her going.

Final compression is 12.37:1.
You know I don't even know the flow numbers on the heads.
Bill at Btr doesn't beleive in flow numbers, (if you read his book) crazy I know. I didn't get his heads with the relocated pushrods, which allows him to really port those heads for max effort engines. He said the CNC program he ran on my heads, built over 600hp a engine similar to mine.
I guess I'll see.

 

[olds307 and 403]

I would think those heads will flow 320+ cfm. Your build will easily make those numbers. Did you go with Bill's clearances? He usually likes even bigger ones. Bill knows his stuff, he was a national record holder with Olds power. His relocated push rod Edelbrock's flow 340 intake/220 exhaust. Awesome build, are you taking it to the track?

 

[jeremys442]

I would think those heads will flow 320+ cfm. Your build will easily make those numbers. Did you go with Bill's clearances? He usually like even bigger ones. Bill knows his stuff, he was a national record holder with Olds power. Awesome build, are you taking it to the track?

He said it was well over 300 cfm, but thats it. I agree, Bill is the best, so I went with what he suggested.
My clearances are pretty loose.... Not as loose as he suggests on the rods, but pretty close.
This is a street strip setup so I didn't want to be ideling at 5psi hot oil temps on the street.
I will take it to the strip once I chassis dyno it and get it tuned.
I'm hopping for 10's. i don't care if its 10.999999999999. Anything less than that is a failure for me.
I've redone the whole suspension, actually I've redone the whole car. The only original parts on the car, is the shetmetal, the frame, and the glass.
We'll see i guess, keeping my fingers crossed for now.

 

[online170]

I've watched a few excerpts of Trovato on youtube in the various hotrod shows. I think he claimed his record again last year after getting some time to work on his own car. He knows his stuff for sure, and has some very outside the box thinking for sure.

With a 12.37 compression ratio, will you be running race gas? with the cam you described maybe your DCR is low enough to consider pump gas.

If you can get your suspension dialed in, you should have no trouble getting to 10's. Good luck, its a kick *ss project, and with small cubes no less!

 

[jeremys442]

If I don't make it into the 10's, I have an Olds diesel block, and 425 steel crank just sitting there waiting.....
Will turn that into a 434 or 442ci SBO!!!

 

[jeremys442]

I've watched a few excerpts of Trovato on youtube in the various hotrod shows. I think he claimed his record again last year after getting some time to work on his own car. He knows his stuff for sure, and has some very outside the box thinking for sure.

With a 12.37 compression ratio, will you be running race gas? with the cam you described maybe your DCR is low enough to consider pump gas.

If you can get your suspension dialed in, you should have no trouble getting to 10's. Good luck, its a kick *ss project, and with small cubes no less!

Yup Bill is fast!
He's switching over to a LSX setup. He's gone as fast as you can go with old Olds technology.
I'm not mad at him going over to the dark side....
I'm going to run Shell 114 unleaded at first. (I need to use unleaded so I don't eat up wideban O2 sensors).
I may try and use half 93 and half VP leaded race gas, because the Shell stuff costs 10.00 bucks a gallon.
I'm guessing this won't be the most fuel efficient build I've ever done....
There's always alcohol/ water injection option for us NA guys.....