CAN AND HOW CAN U DO THIS

50calibre

New Member
Nov 20, 2008
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im wondern if u can change a regular gt 2v into a 4v

the reason i wan t to do this is because the 4v can take superchargers that give u a much more HP

if u know how to do this or how to please let me know
 
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Yes. Just buy the Cobra or Mach 1. The swap is laborous and expensive. You can also build up your 2v to flow very well, there is some people on this board with Ported P.I. Cylinder heads that have amazing results with a nice cam. my 2cents.
 
By the time you purchase the heads/cams, intake, accessories, wire it correctly and tune it you will have been able to buy a new set of Trick Flow 2v heads and cams... I would almost put money on that.

If you really want to swap, you are better off buying a complete 4v engine, as the 4v heads will physically mate on a 2v block but you must modify the 2v bottom end in certain aspects before they will work.

When its all said and done, you still will not be able to run alot of boost on the engine because the 4.6 bottom end is only good for 400-450 rwhp depending on condition of the engine and tune. That is EASILY acheivable with a stock 2v with bolt ons and a blower, even easier to acheive with blower cams in a 2v.
 
A stock-headed, stock-internal 2V with an intercooled KB at 9PSI will give you over 400WHP at a fraction of the cost of a 4V swap plus supercharger upgrade. How much power are you (OPer) looking for?
 
I don't know if any of the above guys have ever even tried to swap to a 4v setup but I know I have. It cost me just over $1000 for heads, cover, intake and exhaust. Installing 4v heads on a 2v shortblock is no different then installing 2v heads.

But like stated above it is smarter to just build up the 2v if you plan to boost it. If you want to do a NA build then go ahead and do the 4v swap.
 
I don't know if any of the above guys have ever even tried to swap to a 4v setup but I know I have. It cost me just over $1000 for heads, cover, intake and exhaust. Installing 4v heads on a 2v shortblock is no different then installing 2v heads.

Without swapping pistons how did you deal with the fact that with 4V heads the compression ratio plummets using OE 2V pistons?
 
:eek: Thats pretty crazy.....What all mod's are you running

i'm sure there is some stuff missing but heres the general list

Paxton Novi 2000
Custom Front Mount Intercooler 24x12x3 core
Tial 50mm BOV
Viper spec T56 transmission
Aluminum driveshaft
HPM driveshaft safety loop
Maximum Motorsports full length subframes
SLP Loud Mouth catback
BBK 75 mm throttle body
SCT FastLane custom tune
60LB injectors
MGW short throw shifter
MGW shift knob
Fidanza aluminum flywheel
Spec stage 3+ clutch
Motive 3.90 gears
Auburn Pro 31 spline differential
Moser 31 spline axles w/ 3" studs
Moser C-clip eliminators
Autometer Lunar gauge cluster
Autometer Lunar boost and fuel pressure gauges
AEM wideband gauge
Raptor shift light
Steeda clutch quadrant and firewall adjuster
Cobra fuel tank Dual GT supercar pumps
SLP line lock
SCT 3000 MAF
Tokico HP shocks/struts
Cobra brakes front & rear
P51 intake
2004 Cobra crank
Ported PI heads
MPH custom grind blower cams
Manley Billet I-Beam rods
Mahle pistons
ARP head and main studs
CPR fuel rails
Oil pump with billet gear
Canton oil pan
Bassani mid length ceramic headers
Bassani off road midpipe
new ford racing block
8 Rib kit
Innovators West 10% OD crank pulley
modified FPDM
8 gauge wiring for fuel pumps
PPRV delete
NOS intercooler spray bar
NOS polished 10lb bottle and billet bracket
Spec stage 3+ clutch
CPR fuel rails
8AN braided fuel line
Welded axle tubes
UPR lower control arms
UPR upper control arms
 
How much boost do you run to make 750 rwhp saleengt2001?


As everyone else has said here, just build the 2v

By the time you swap to 4v your still left with internals that suck.

Just build a badass shortblock, ported pi's, cams, and a blower.

You will be able to reach your goals with a good amount of boost