Engine Experts... Info. Needed ....

[Denny S.]

THe older guy is really a character, I'm thinking that he still thinks the Civil WAr is raging in Georgia... I can call him 10 times a day with questions and he's never acted put out. Takes time to explain his ideas and why they will work.
I'll bet he still tunes engines by ear. Has alot of Boss 429 stuff, actually a sh** load of every kind of Ford Big block stuff.
He's kind of like your GrandPa.. You just knew he knew what he was talking about. THe local guy has an excellent rep on Ford stuff too. He has all the toys at his disposal. Dyno Etc Etc... I will say the local guy says I don't need forged pistons, MY CR should be 10-1 or lower, Stock rockers, smaller carb. Ha Ha Ha when I mentioned to my Granpa that the local guy suggested a Quadrajet he went nuts.. G** D** Chevy sh**.. The old guy
Is really giving me break on parts. I asked up here at a TRans shop about going over a C-6 and they told me 1500. THe old guy says( I've learned all the tricks with these C-6's and I'll build ya a good one for 400 exchange...)
So thats my quandry.. Oh and to add more drama one of my best friends who knows Ford engines too but over thinks everything. is friends with the local engine guy.. HOL* SH** ..

[Art]

nm

[Denny S.]

Could you try these cams ???

THese are all Comp

XE 262 H
X4 270H
275 DEH
270H
280 H
292H

THese were all other ideas... Use the same heads and CR so we have something to compare...

THanks a BUnch....

[Denny S.]

His name is Harold Dutton Oxford Ga.
He loves to talk Drag racing and Ford
Big blocks and he's got every friggen part known to man for the big ole motors..
He's been trying to sell me a 514 motor already built, but I just don't have the moolah...

[chuckbrandt]

Having read all you said about your two main advice givers, I'd lean towards the old guy. I think he nailed it when he said your local engine guy is a chevy guy, I wouldn't use a quadrajet or an edelbrock.

I'd be looking for a new machine shop if it was me. One that is more interested in doing what you tell them to do and doing it right.

I wouldn't get all hung up on compression ratio. (given the same cam) a half a point only drops your hp by 4%. Start at 10:1 and go big on the cam. Headers will make much more difference than that little 1 point of compression (to power) but it will certainly help you prevent detonantion. That gives you the flexibility to curve your distributor and run more advance.

Desktop dyno is pretty much useless unless you have flow numbers for your heads. I'm also pretty unimpressed by the infulence of choices of intakes. But other than that it's a tool, much better than nothing but not near perfect.

In the end listen to people a little, do a little research and give something a try.

[BB427]

CJ428CJ,

You are correct....Performance parts manufacturers do use computer simulation programs to suggest products.(or what they have too many of on the shelf at that time) But I bet their program was not purchased at Super Walmart for $19.95.

I have desktop dyno and I enjoy tinkering with it alot. All I meant in my post was not to spend alot of money on the parts it suggests but rather speak to a reputable FORD guy in your area.

Brent

[CJ428CJ]

Denny,

Here's where I got the cam info for the comp cams: http://www.smokemup.com/utils/cams_results.php

Which of those cams would you like me to try? I can often get just what I need from the cam mfs catalog but the comp cams catalog doesn't give me what I need like many of the other cam mfr's catalogsn (or I can't find it - I need the valve opening and closing timing).

BB427 - $19.95 at Super Walmart? I got ripped off. I had to pay $39.95 at Summit.

Chris

[Denny S.]

http://www.compcams.com/catalog/
I got all the info from here. If you find the cam, type in the part number on the search thingie at the top right and it will give you all the cam spec...

Thanks, Denny

[Jack21]

Even if you paid full retail for Desktop Dyno 2000, you saved literally thou$and$ in parts and time determining what works best on your motor, and what has little effect.

Well worth every penny. Use it before you spend a dime on parts.

[CJ428CJ]

Denny,

Here's what I came up with:

XE262H - Couldn't find the specs
X4270-11, 34-239-4, 451hp@ 5000, 548ft-lbs@3500
275DEH, 34-330-4, 485@5000, 562@3500
270H, 34-229-4, 430@5000, 549@3000
280H,34-331-4, 456@5000, 535@3500
292H, 34-336-4, 466@5500, 512@4000

These are all with 11-1 compression, edelbrock heads, dual plane manifold, 870cfm carb and large tube headers with mufflers.

Chris

[Denny S.]

Comp Part # 34-238-4

And thank you again...

[CJ428CJ]

Denny, I still can't find anything on the comp cam site for that cam. Typo?

Chris

[Denny S.]

Gross Lift .513 Int .513 Exh

Duration at .006 Tappet Lift

262 INT 270 EXH

Valve Timing @ .006

Int open 25 Close 57
Exh open 69 Close 21

Specs Cam installed AT 106 INT C/L

Dur @ .050
INT 218 EXH 224
Lobe Lift .2980 INT .3010 EXH
Lobe SEp 110.0
Comp Springs 926-16
Comp Part # 34-238-4
XE-262-H

[CJ428CJ]

That one is 426hp@4500 and 561 ft-lbs@2500.

[Denny S.]

Custom Grind By Comp

11-1 Edelbrock, 870 Carb, Tubes with mufflers same set up as before ..

Gross Valve Lift INT 515 EXH 525
Duration @ .006 Tappet lift
INT 262 EXH 270

Valve TIming @ .050 LIft

Open 3 BTDC Close 35 ATDC
43 BBDC 3 ATDC
CAm installed at 106 Int CL
Duration @ >050 INT 218 EXH 226
Lobe lift INT .298 EXH .304

Cam GRound with 108.0 lobe seperation

THis is a custom gring the ( Ford EXpert )
at Comp gave me for boatloads of low end torque.

THank You in Advance ....

[Eljaro]

I had 11.5 compression on my 427 with iron heads. The engine blew the headgasket twice and needed important engine repair . Now I have aluminum heads (Dove F5) with 9.5 compression.
The better flow and cooler running of the aluminum heads more than makes up the horsepower lost to compression. Engine is more dependable now, runs cool and has great torque , which is what makes driving fun , especially if you prefer windy mountain roads to straight highways.
Dont get mislead by all the goodies they want to sell you. In the 400-500 HP range you will hardly notice a 35 hp difference unless you race with your car.