Performance Questions 225 vs. 360
To the OP'er you should of called the tread "how to get V8 power out of /6" since no ones given you detailed mods, like which cam, header, carb, turbo etc..... Too use.
That is a really good idea, I think.
Here's the recipe for those 500HP motors that were in the videos, as closely as I can remember: Our motor is a copy-cat of these...
Block: Early slant 6 block with forged crank
Head: The one we used is an early "drool tube" head
Block modifications:
Bored .065" over, giving 233 cubic inches
Pistons: Wiseco forged (about $500.00 as I recall)
The pistons come with rings, but they have to be end-gapped: .025, top, .022" second...
Rods: K-1 forged, 7+",
stock 198 rod length (maybe $600; don't remember exactly)
Crank; tturned .010"/.010" and balanced
Cam: Bullet 210/210 degrees duration @ .050"-lift with115 degrees of lobe separation... totaa gross lift: .484" about $130, I think plus a set of new, stock, solid lifters
Carb: Mine is a 750 model 4150 Holley double pumper that has been modified for blow-thru by a friend, who installed a boost-referenced power valve, plus other internal mods that are necessary for blow-thru. Everybody should have such a friend... The one on my Valiant (also blow-thru) cost me $900.00, new from the Carb Shop in Ontario CA.
Intake manifold is the wrong one for this engine, but is a Hurricane from Aussie Speed. We need a short runner manifold, but the header on the car won't fit either a Clifford or an Offy. So, we'll run what we have, for the moment.
Header is a home-built piece with 1.5"-diameter primary tubes and no attempt was made to equalize the runner length. That may not be very important on a hi-boost engine.
Turbo is a Turbonetics 67mm and was given to us; no other info is available except an identical unit is running on his Grand National and works well (mid-tens,)
Turbonetics waste gate (no info; set at 10 psi of boost, for now.)
Spectre el-cheapo carb hat.
Some sort of el-cheap blow off valve from e-bay... probably gonna regret that.
Stock slant 6 distributor
MSD 6-AL-II ignition with an MSD Blaster II coil
440 neutral-balance B & M flex plate (one re-drilled hole)
Cylinder head is an e-bay buy @ $700.00 plus shipping, Had been ported and had "big" 1.75" X 1.5" valves installed.
3" down-pipe
F.A.S.T. datalogging 02 sensor for mixture checking
904 transmission with Turbo-Action, manual valve body, reverse pattern, Turbo-Action "Cheetah" floor shifter, 2.74:1 lfirst gear, gearset from a 99
8.75" rear end out of a '67 B-body; narrowed the spring mounts 1" on each side. 3:55 Sure Grip; Yukon hi-strength, aftermarket axles
Cal Tracs
9"-wide, Hoosier bias-ply slicks, 26"-tall
Driveshaft loop and roll bar
3,500-stall Hughes converter
Electric fan and water pump
Snowperformance Boost Cooler alky/water injector
Morsoso Accu-sump lubricationg oil accumulator
Pan sump dropped 2.5"
Pan has baffles and an extended pickup
New 8mm Taylor spark plug wires
NGK B9ES spark plugs gapped at .025"
18 degrees total spark advance No typo; 18 degrees
.022"-thick shim steeel head gasket
Custom-ordered ARP head studs that are 220.000psi (regular ARP's are 180.000psi)
STOCK rocker arms
STOCK pushrods
340 valve springs plus a pretty weak inner spring
135 pounds on the seat; 320 open
Lubrication system on ours is stock. Those other guys may have made some modifications; I don't know.
If I left anything out, I'm sorry; I'm OLD and it's late... 2:00 a.m.
Anything else, just ask. No speed secrets here!!!
As you can see, this is pretty basic stuff; nothing esoteric or hi-tech at all...
Anybody can buld one of these...
Hope ours runs decent... We'll see!
