Survival FE Stroker Kits include:
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Clearance Grinding
Unlike the common kits for small blocks, these require no clearance work in
factory blocks. Aftermarket block sometimes need a very small amount of
grinding in #2 and #4 main bulkheads - 10 minutes work at the most.
Why do Survival kits include race bearings?
For extra clearance for the crankshaft's journal radius. If you used
passenger car bearings you'll bolt the kit together and find no side clearance
between the rods - and the race bearings are stronger too - giving an extra
margin of strength. All race bearings are perfectly suitable for street use.
Why do Survival kits include internal balancing?
Because it's the right thing to do. Internal balancing is easier on the crank
and bearings at high RPM and high power levels. Even the Scat 3.984
stroke 428 replacement cranks are designed to be internal balanced, unlike
the factory pieces. Internal balancing allows you to run readily available
dampers, flywheels, and flexplates from a 427 or a 390 without being
concerned about disturbing the engine's balance.
H beam or I beam rods - which to use?
We generally prefer the H beam for most FE stroker applications. They are a
bit beefier, and the machining and finish seems a touch nicer. We've run H
beams at over 750 horsepower with no issues at all. I beams are a great
alternative for street oriented engines, and will save you about $130 if you
choose them.
Why 6.700 rods instead of longer ones?
We don't subscribe to the "longer is better" philosophy on rods. We
consider the piston ring seal to be far more important. The 6.700 rod allows
even the 4.250 stroker combo to keep the ring grooves intact. No oil
spacers guarantees good ring seal and no oil burners. Piston weight is still
quite light at 490-515 grams. Compression distance comes in at 1.330
Unlike the common kits for small blocks, these require no clearance work in
factory blocks. Aftermarket block sometimes need a very small amount of
grinding in #2 and #4 main bulkheads - 10 minutes work at the most.
Why do Survival kits include race bearings?
For extra clearance for the crankshaft's journal radius. If you used
passenger car bearings you'll bolt the kit together and find no side clearance
between the rods - and the race bearings are stronger too - giving an extra
margin of strength. All race bearings are perfectly suitable for street use.
Why do Survival kits include internal balancing?
Because it's the right thing to do. Internal balancing is easier on the crank
and bearings at high RPM and high power levels. Even the Scat 3.984
stroke 428 replacement cranks are designed to be internal balanced, unlike
the factory pieces. Internal balancing allows you to run readily available
dampers, flywheels, and flexplates from a 427 or a 390 without being
concerned about disturbing the engine's balance.
H beam or I beam rods - which to use?
We generally prefer the H beam for most FE stroker applications. They are a
bit beefier, and the machining and finish seems a touch nicer. We've run H
beams at over 750 horsepower with no issues at all. I beams are a great
alternative for street oriented engines, and will save you about $130 if you
choose them.
Why 6.700 rods instead of longer ones?
We don't subscribe to the "longer is better" philosophy on rods. We
consider the piston ring seal to be far more important. The 6.700 rod allows
even the 4.250 stroker combo to keep the ring grooves intact. No oil
spacers guarantees good ring seal and no oil burners. Piston weight is still
quite light at 490-515 grams. Compression distance comes in at 1.330
How Big Is It?
A .030 over 390 with a 4.250 crank is about 445
cubic inches. With dish top pistons and 72cc
Edelbrock heads you get 9.8:1 compression. Flat
top pistons will net you 10.8:1 compression. We
make 500+HP with this - as seen in Car Craft!
A .030 over 428 with 72cc heads and flat tops will
get you about 465 cubes and 11.2:1 compression.
Going to the dish pistons takes the compression
to a pump gas friendly 9.8:1
A 427 with a 4.250 bore and a 4.250 stroke ends
up with 482 cubes. Flat tops are going to be at
12:1 for race gas, dish pistons will get 10.6:1. We
have made over 725HP with Blue Thunder heads
on a 482 like this!
A .030 over 390 with a 4.250 crank is about 445
cubic inches. With dish top pistons and 72cc
Edelbrock heads you get 9.8:1 compression. Flat
top pistons will net you 10.8:1 compression. We
make 500+HP with this - as seen in Car Craft!
A .030 over 428 with 72cc heads and flat tops will
get you about 465 cubes and 11.2:1 compression.
Going to the dish pistons takes the compression
to a pump gas friendly 9.8:1
A 427 with a 4.250 bore and a 4.250 stroke ends
up with 482 cubes. Flat tops are going to be at
12:1 for race gas, dish pistons will get 10.6:1. We
have made over 725HP with Blue Thunder heads
on a 482 like this!
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Phone (248) 366-3309 or (248) 931-0358
Fax (248) 438-6900
E-Mail Info@Survivalmotorsports.com
Fax (248) 438-6900
E-Mail Info@Survivalmotorsports.com