My build starts in two weeks and there a few questions I need to find answers to and a few details to nail down.

1) With SI Valves (0.020 oversize), (988-12) comp cam springs, and comp cam retainers (1730-12), What locks do I need? Part numbers please.

2) Would it be beneficial to run the older style Alabama head (90TM) with flat top pistons (3155HC-5MM on summit) vs oem spec dished piston with Alabama 98TM heads? Important tidbit, the block will be decked to whatever it can be cut down to, still researching that one. Trying to get to around 10:1/10.5:1 compression

3) Using the older style heads, what is the limit on porting and polishing the intake and exhaust runners? With the newer style heads, what should the final finish be on the intake runner? I had heard/read smooth, but not polished. Anyone care to confirm or deny?

4) Running the above setup with the 422 cam, do ARP rod bolts and main studs warrant the cost? This setup will never be FI or sprayed.

5) What is the preferred 24lb injector? Part #? Do the 24lbs from a mustang work?

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2000 XLT 4x4, 4dr ext cab, 4.0L OHV, 4.10 LSD
265/75/16 Goodyear Duratracs
Mountaineer seats, Expo OHC
2003 EDGE front clip conversion
133rwhp/192rwtq-->6-28-11

1969 Mercury Cougar
351W, FMX, 3:1 open diff in a Ford 9"
Undergoing restoration

As for the porting of the stock intake and exhaust, Here is PDF that goes over everything:

http://www.therangerstation.com/tech...ad_porting.pdf

Other than that I dont know much about these engines sadly.

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1999 Ford Ranger XLT Flareside 4.0 4x4 158,000 miles automatic

basically leave the casting on the intake and make the exhaust as smooth as possible. if you smooth the intake and polish it a lot, the fuel will fog up on the sides and you wont get an even mixture delivery to the cylinder. thats about all i know lol

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1998 ranger extended cab, 2wd, 4.0 ohv, 5 speed, sony xploid 52 4 way watt radio, 2 pair of pioneer 240 watt speakers, Cobra 29 LX LCD CB radio pushing 100 watts, k&n air filter, 15 inch exploder wheels, dual exhaust with 4 inch stainless tips, 2 12 inch subs with a 1000 watt amp just for the hell of it!

new project: dirt track modified racing at the local saturday night track.