paintman

Hey all, in the process of stroking my 454 I'm going to paste my engine builders quote below....& my question is (iwaiting to hear back from him as well) if its not a marine block, is it a simple change over to suit?

"FYI i may very well end up aquiring a factory roller 4 blt. 454 block. we could upgrade from your block to the newer style block taking advantage of roller cam, better oiling system, one piece rear main seal. i'm to find out today. i'll get the cost of iron oval port heads too. we need to make our decision which route were going to take. i'm hope we can do the 496 roller block and dart oval port heads."


Thanks guys
Pat

1BIGJIM

iTrader: (1)

I have built several and they perform great with the correct parts. There is no such thing as a marine block. You can use retro link lifters with a roller cam and they work as well as a GEN 6 block.
Don't buy any junk cheap parts and you will be fine.

Contact RMBUILDER Bob Mandra to custom grind a cam. Its worth ever penny, and not much more than a off the shelf cam. He can also set you up with a good set of heads.

Do not forget exhaust, all performance builds start there.

f_inscreenname

Where is what I did to a Mark IV this past spring.

*1987, MIE/340 (7.4) 454 4 bolt main Big Block
Dip it and hone the decks and cylinders cut .060 over
Block was detailed with all casting debris removed
Scat 9000 Crank 4.25, 496 stroker
Scat 26385P - 6.385 in. Connecting Rods - Bushed -I Beam Forged 4340 steel
Howards Cams 120255 - Max Torque Retrofit Hydraulic Roller Camshafts, Hydraulic Roller Tappet, Advertised Duration 288/294, Lift .585/.610, 112 L/S
Howards Matching Valve Springs 98636 - 130# / 330#
Cloyes Gear 9-203 - Cloyes Wear Plate, 031 in. Thick,
Maxspeeding Hydraulic Retrofit Roller Lifters
Probe 496 Dome Top +18.0cc - SRS Piston Set
Clevite 77 Cam Bearings
Federal-Mogal 4400 M20 Main Bearings
King Engine Rod Bearings CR849HP
Cloyes true double roller timing chain
Mahle - Plasma Moly Coated piston rings
Melling 10778C (Anti-Cavitation) oil pump
Melling HV oil pump shaft.
New Harmonic Balancer
Rotating Assembly Fully Balanced
Comp Cams High-Tech pushrods #7954
Completely refreshed Chevy Heads 14096188 / 454 Open / 118cc / 3angle valve
APR head bolt sets
ARP 1.90 rocker studs
Norris S/S 1.7 roller rockers
Seal Power Gasket set
EDELBROCK BBC R2 AIRGAP INTAKE
Pro Comp 2752 Fuel Pump
Pro Comp Ignition
Pro Comp distributor
Super Stock coil
8mm Accel Hi performance wires
New single wire alternator
Mini (gear reduction and fully marine) starter
Edelbrock 800 carburetor
12" aluminum, oval air cleaner (with K&N filter)
Brass freeze plugs
Stainless steel bolt set
4” Stainless steel risers
496 MerCruiser exhaust manifolds with Tall Risers
Sherwood motor mounted raw water pump

paintman

Thanks fellas...

& screen name-what were the hp/tq #'s. Sounds like a nice build

Cheers pat

mach1magnum

do you have to change balancer and flywheel to balance the added displacement?

MILD THUNDER

iTrader: (3)

If you are going to a new block, new crank, new heads, new rods, new pistons, new lifters, etc, why do a 454 based stroker?? Why not try to find a good 502 block, preferable a bowtie, or dart, and build a stroker from a 502. 540, 555, 565, etc

I can understand if you were just gonna upgrade the current rotating assembly, but at this point your pretty much going all new parts.