Anyone Running a 408-427 Small Block in a Fox

**only90s** · 02-16-2010, 09:40 AM

Toying around with the idea of getting rid of the Vortech 308 Twisted Wedge in my Fox now and moving up to a Naturally Aspirated 427.

I have seen some builds with AFR 205s or big daddy Trick Flow Heads, monster cam, 11:1 compression put out 450-500rwhp.

That would put me about 100 horse down from my ultimate power goal, BUT alot less worry when staying unboosted...fear of blown head gaskets, detonation etc etc.

**only90s** · 02-16-2010, 01:53 PM

My original plan is to hammer my current setup until it gives up the ghost...then:

Boss Block 331

Send my Heads to Fox Lake for Stage 2 Port

Anderson B-41HR or B-451 Cam

S Trim pushing 12lbs of boost

Abaco Digital MAF with 60s

Should put me easily in the 550-to 600rwhp range..

**jmac72187** · 02-16-2010, 02:36 PM

I would think that the boosted set up would be much friendlier on the street. As long as the motor is built for the boost, you should be fine.

**only90s** · 02-16-2010, 08:11 PM

Both setups have pros and cons. I guess I need to figure out what the hell I want to do with this car eventually. My fear is I will only hear the whine of me complaining if I give up my Blower whine...

**slammit06** · 02-23-2010, 05:44 AM

all in all mark if it were me( and I may just go down this road again with another fox) I will be doing the 67 mm turbo attatched to a 331. The amount of boost requierd to achieve the 600 rw range is so little it would blow your mind. The other side of the coin of running a naturaly asperated engine I would go with the stroked 351 to a 408 solid lifter set up with a set of brodex/afr's heads.

**only90s** · 02-23-2010, 09:28 AM

Originally Posted by slammit06

all in all mark if it were me( and I may just go down this road again with another fox) I will be doing the 67 mm turbo attatched to a 331. The amount of boost requierd to achieve the 600 rw range is so little it would blow your mind. The other side of the coin of running a naturaly asperated engine I would go with the stroked 351 to a 408 solid lifter set up with a set of brodex/afr's heads.

I have considered a Turbo build as well...I know it is so easy to make power with them...decisions, decisions...good thing I have no $$ now so I have time to decide.

**lxfiveo** · 02-23-2010, 09:56 AM

Turbos are often a science project....trust me. I hate seeing the words "easy" and "turbo" in the same sentence. I don't know how many of you went to the IHRA Nationals, but if you did, you'd know there was only one high HP car running a turbo setup. It's not because they can't make power, but they often are extremely hard to tame and become consistent at a high HP level. Obviously the street is a different story and turbos have come along way in efficeincy since I started down that path, but they still have drawbacks. They can be brutal on drivetrains, the bigger you go the more lag you will experience and they are a more expensive and less reliable road to travel as well. Now with that said, if you can get it right, they are simply BADASS!

**only90s** · 02-23-2010, 06:36 PM

Originally Posted by lxfiveo

Turbos are often a science project....trust me. I hate seeing the words "easy" and "turbo" in the same sentence. I don't know how many of you went to the IHRA Nationals, but if you did, you'd know there was only one high HP car running a turbo setup. It's not because they can't make power, but they often are extremely hard to tame and become consistent at a high HP level. Obviously the street is a different story and turbos have come along way in efficeincy since I started down that path, but they still have drawbacks. They can be brutal on drivetrains, the bigger you go the more lag you will experience and they are a more expensive and less reliable road to travel as well. Now with that said, if you can get it right, they are simply BADASS!

I understand 100%. A lot more work to build a turbo car than a simple S Trim. I should have said it is much easier to reach high horsepower goals with a turbo, but A Lot more work to get it right.