shard351

I'm in the process of replacing a buggered hydraulic camshaft with a solid cam. With the hydraulic (Crow cam 211367, lift .530 / .548, 0.050dur 226/232) the car made 231rwkw.

the new cam is Crow cam 21626, lift .560 / .570, 0.050dur 238/244. This seems pretty close to a Crane F238?

What do you think would be the expected power gain?
Are there any parts which don't match the combination(ie any areas for improvement)?

Engine as I know:
351 + 0.040"
Keith Black forged pistons
2V heads ported flows 530hp
Yella Terra roller rockers
Redline street torker single plane manifold
1" 4 hole spacer
750VS Holley
Accel electronic dissy
4-1 Pacemaker headers 2"primaries
2.25" twin exhaust

Engine runs through toploader and 3.25 LSD 9in diff

brenx

Probably go close to 250rwkw with the manual box. Parts that don't match? Carb I'd think. Also exhaust twin 2.5" would work better. Use what you have and see what happens. It can't hurt.

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XB Fairmont (street car) 11.07@123.02mph.

shard351

Yeah, 2.5" exhaust would be good. But once bitten twice shy. I recently had the EPA to contend with.

X pipe or balance pipe would be good also.

250+rwkw would be great

reece1

keep both systems one for fun and one to keep the neighbours happy.

brenx

To get a 2.5" twin system legal 96db. You need just twin straight through mufflers and at the rear you need some resonators. That netts about 94-96db. Other alternative is run better mufflers or triple flows.

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XB Fairmont (street car) 11.07@123.02mph.

shard351

hmmmmm,

maybe I need a better exhaust shop. But what I was getting at was having spent money to get it legal I'm hesitant to spend more.

Reece

I was thinking about getting flanges cut in for track days.

reece1

flanges are definatley the go just makes it easier to do anything with. the cost is minimal compared to the ease of removal.
and you can have the best of both worlds cause even the most hardcore like a quiet exhaust sometimes

brenx

I'd try what youve got as it doesn't hurt the hip pocket. Then go from there.

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XB Fairmont (street car) 11.07@123.02mph.

shaynet

I run a solid 605/605 lift with 248 @ 50 and AFD heads, 800 v/s carb and make 248 rwkw on Dyno Dynamics shootout mode and 252rwkw on a new Mailine dyno. see the Clevo sounds thread for vid of my car on Dyno

So if your combo willl make 250rwkw I will bring my car down to your dyno so I can make 270/280rwkw. Only thing you have that I don't is 1" spacer and 2" Pacys.
I have 1 3/4" Pacys and 2.5" twin exhaust only one muffler each side thru toploader and 3.5 geared 9"

Not bagging your car/combo but I think 231rwkw is a bit high for what it had. Try another dyno. I have no doubts you will make more power with the new cam. Good luck

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The cop said "Do you know why I pulled you over". I said " Well, that all depends on how long you have been following me!"

XFFAIRMONT

The X pipe quitens the exhaust a fair bit doesn't it and draws out the gasses better.

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Just love that V8 sound, rumble, music!