In addition I would be swapping in a cam with a bit more agressive profile. Currently I have what is basically a 82-84 HO cam, but with the 302 firing order. I was thinking of something like the Performer-Plus camshaft - .448/.472 w/ 270/280 duration (204/214 @ .050"), lobe seperation @ 112 degrees. Not enough? Keep in mind that I just want a mild performace street motor with good torque, not a killer strip engine.

Any comments or advice would be very much appreciated! Thanks in advance.

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Cheers,
Ian
M&M Member #395
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'79 Mustang Indy 500 Pace Car
Ian's Pace Car Website
Vancouver Island Mustang Association Website
Indy Pace Car Registry of Mustangs Official Website

"If you get to thinking you are someone of some importance and influence, just try ordering another persons dog around." - Author Unknown

I sold one of the stock alum intakes last year for $30. They have smaller ports than a performer, but either of these manifolds are 5,000 to 5,500 rpm redlines. They would match the cam you are looking at though. Should work fine for what you want.

Comp Cams also has the 265DEH dual pattern cam which looks like it would work with my proposed combo (211 int., 223 exh. @.050; .472" int., .486 exh. w/110 lobe separation).

Which would be a better choice, given my rather restrictive stock heads (although they have been cleaned up a bit)? Would a dual pattern have a bit of an advantage over the single pattern? Would my engine benefit more from the increased duration on the intake side of the 268H over the 265DEH, or would the higher lift and increased exhaust duration of the 265DEH compensate a bit for the restrictive exhaust ports (I will have shorty headers and full 2.5" dual exhaust on the car)?

Wow, this cam selection stuff is tricky!! Help me out here experts!! Thanks!

quote:

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Originally posted by Moneymaker:
Comp 270 H or S camshaft. The intake is junk!

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Would the 270 series be a bit much considering my compression ratio is around 8.5:1? How much more hassle is involved in using a solid cam (270S) over a hydraulic on the street? An I going to be spending lots of time adjusting the valvetrain? Also, I won't be reving the engine much over 5500 rpm as the bottom end hasn't been balanced, and I'm still using the stock balancer. The pistons have valve reliefs, but not sure how much lift they could accomodate (stock replacements, 0.040" over). Sorry, I'm still a rookie when it comes to cam selection so I want to be sure.

Ok, so I guess it'll be better to go for the Performer intake over a stock 85 unit. If i ground off the Edelbrock signature and painted it blue to match the rest of the engine it would still look pretty stock, I guess.

Thanks for your help with this everyone!

Thanks for the advice Alex, I really do appreciate it. I'm just getting tired of the stock engine, and want a bit more get-up-and-go when I mash the loud pedal. This combo should make a nice little street performer. Now I just have to start collecting the components!

I'd say anything over 218 @ 0.050" is more than what you can take advantge of.

I've had the mustang since high school. It's been through all sorts of combinations from stock 2bbl engine, auto tranny, and 2.80 8" open rear, to what it is now.

With a stock engine that had a little more compression than yours, it ran GREAT with a Crane 272 Max Velocity cam. I believe it had an intake duration of 216 deg @ 0.050". It redlined around 5500 rpm, and had great power from around 2-5.5k.

Too large of a cam will only cost you low-end and midrange power... and won't really give you much (if any) more on top due to the pathetic compression ratio and asmatic heads.

Good Luck!