Opinions on combo

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11-28-2003, 07:17 PM
fastbacker

Opinions on combo

Hey all-

My car is getting close to being finished and I was hoping to get your opinions on the engine combo. This car will be a street car (city and freeway driving) that gets road raced at the occasional open track event. I may shift it as high as 7000rpms; although, I'm not sure if I'll need or want to.

The car:
-65 Mustang fastback
-Full Griggs GR-350 suspension
-T56 (Mustang, not Viper version)
-3.7:1 9"
-275's (in the future)
-sub frame connectors and 6pt rollbar
-12&13" Baer PBR discs

The engine:
-Dart block 348 (302 based)
-8.5:1 cr
-Custom Comp Cams hydrolic roller: int-286/570, ex-294/579
-AFR 205's with a little exhaust porting
-Holley Systemax II (EFI) - cleaned up and port matched
-Novi 2000 with 9-10 lbs of boost
-1 3/4 long tube headers

What do you guys think about this engine combo?

Thanks-
Craig
11-28-2003, 07:19 PM
root

Craig that sounds awesome!

Do you have any pics?

Ian
11-28-2003, 07:29 PM
fastbacker

Ian-

The only pics I have are taken last week (just got a digital camera) while the car was at Griggs (still there). The photos are of the suspension with no engine and tranny. You can find them here - http://members17.clubphoto.com/craig...34/guest.phtml

What do you think of the engine combo? Too much head?

Thanks-
Craig
11-28-2003, 08:01 PM
swilldup

pulley it up and that thing will run 9's all day!
11-28-2003, 08:25 PM
root

The 205's are perfect and the rest of your engine sounds great!

Ian
11-28-2003, 08:28 PM
5150 LX

Very nice, be sure to post some pics here when you get it all together.
11-29-2003, 01:07 PM
Hustler

If its a streetcar revving a 348 to 7000 doesn't sound like you want the rings to last. You're probably going to see increased ring wear. If you are stepping to a Dart block why not go to a 351 if you want the added cubes. Having a 65 fastback myself I know they make headers just for this application.
11-29-2003, 04:39 PM
regattacoupe

sweet! this will be awesome! FWIW I think the general opinion on the size of the intake is a little conservative. I think this will run very well. @ 6000 rpms with a Novi 2000 you may not "need" to shift that high. Espicially if you get a the correct custom cam for you motor.

Please post pics and/or videos when done!
12-01-2003, 02:46 PM
fastbacker

Hey all-

Engine combo has been finalized and assembly has begun :) I just edited my post up top with cam specs and cr. What do you all think?

Thanks-
Craig
12-01-2003, 03:12 PM
root

Craig, sounds like one hell of a ride! Be sure to take pictures and document the process.

Ian
12-01-2003, 03:47 PM
fastbacker

Ian-

No problem. I'm excited about the new camera.

The reason I'm asking about this engine combo is because most over at Corner-Carvers.com think the AFR 185's would be better. The local people I talk to don't neccasarilly agree.

Part of the decision (205's) had to do with traction. With 500-600rwhp, I don't know if a little low end loss will be a bad thing. I just hope it's not too much of a low end loss.

Craig
12-01-2003, 04:01 PM
root

The 205's are the way to go 100%. You will not regret your choice at all.

Ian
12-01-2003, 04:11 PM
fastbacker

Even given that this is a street/open track dual purpose car and one that will probably never be dragged?

Craig
12-01-2003, 04:20 PM
root

Criag the AFR head will make tons of power, and will work just fine with what you want to do with the car.

The 185's are too small, 225's are too big, the 205's are just right :)

Ian
12-01-2003, 04:43 PM
fastbacker

Thanks. That makes me feel better!

Craig
12-01-2003, 05:36 PM
swilldup

the 205 will rock,what are the cam duration at .050??and the lope seperation?
12-02-2003, 12:08 AM
fastbacker

I'll have to check with my engine builder who was the one who ordered the cam from Comp Cams.

Craig
12-02-2003, 11:51 PM
jonnyk

If you want to spin to 7000 revs you better have a lot of things planned for those 205's. They aren't set up for hydraulic roller and you'll want a set of titanium retainers at the least to take some mass out of the valvetrain. Longetivity greatly reduces the higher you spin it. I would be much more inclined to shift around 6200 and pulley up the Novi to compensate.
Aside from that it should seriously haul. I was worried about soft lowend with mine also (granted my combo is a lot more mild) but you don't really notice it at all, you'll just find yourself driving it higher in the rev range to compensate.
12-03-2003, 12:14 AM
regattacoupe

This will flat haul the bacon! Pics Please!
12-03-2003, 02:00 AM
Doug

Quote:

Originally posted by jonnyk
If you want to spin to 7000 revs you better have a lot of things planned for those 205's. They aren't set up for hydraulic roller and you'll want a set of titanium retainers at the least to take some mass out of the valvetrain. Longetivity greatly reduces the higher you spin it. I would be much more inclined to shift around 6200 and pulley up the Novi to compensate.
Aside from that it should seriously haul.

Not to flame ya, but what the hell are you talking about?? The only cylinder head wear and tear you get shifting a motor very high is valve spring wear. It is a good idea to order them with titanium retainers. The 205's can be ordered from AFR set up for hydraulic or a solid roller. The only difference is valve spring pressure. Anderson Ford Motorsport sells hydraulic roller lifters that are supposed to be good for 7500 rpm.

The 205's will work great on your combo. I use them on my motor and they work great. I have more than enough torque with the 205's, a Hogan sheetmetal intake, and a 90mm throttle body. Its true that I have a big inch stroker motor, but it's good enough to run mid 10's on the motor. I shift the motor at 7400 and have run through the traps at 7900rpm.

Doug