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Author Topic:   351C Performance Mods
jsracingbbf
Gearhead

Posts: 1677
From: Batesville,MS. , U.S.A.
Registered: Mar 2002

posted 07-17-2002 09:26 AM     Click Here to See the Profile for jsracingbbf   Click Here to Email jsracingbbf     Edit/Delete Message   Reply w/Quote
I need some advice. As many of you may know I used to race a 351C before I switched to a 385 series BBF. Now I have a friend who owns a 72 Ranchero with a 2bbl 351C and he would like to add some performance mods. Mainly 4bbl, dress-up, mild stuff like a street rod. My experience with Clevelands has always been "race", even back when I first started I always went at it from the race approach and sacrifce streetability. Does anyone here have a good base cam, intake set-up recommendation for a 351C 2bbl motor that would keep it streetable but make it sound good and perform decent?

------------------
Jerry Smith
69 Mustang Pro ET Drag
Only 'lil boys wear Bowties

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Greg Pettit
Journeyman

Posts: 75
From: Dallas, TX
Registered: Nov 2001

posted 07-17-2002 11:30 AM     Click Here to See the Profile for Greg Pettit   Click Here to Email Greg Pettit     Edit/Delete Message   Reply w/Quote
Here's what my Bro did with his Cleveland. This is his daily driver in his '71 Torino, with A/C and power brakes with a C4.

Aussie heads by Powerheads. Toss the springs that come with the heads, they suck bad. BTW, 92 octane works great with these heads.

Stock bottom end. I mean down to re-using his 140,000 mile OEM pistons.

Comp cams 280 hydraulic cam. I think it's 230/230 @.050, don't remember the lift offhand, and it's on a 110 LSA. Strong lope at idle, but it never dies at 900 RPM with the A/C on even!

Harland sharp rockers with comp springs.

Duraspark ignition.

El cheapo 1 5/8" headers with a 2 1/2" exhaust and H-pipe, coming out the back with full tailpipes.

Edelbrock Performer intake. I know, these are supposed to suck, but it works great on this engine. We have not tried anything else yet, so there might be some more power hiding here.

Holley 650 DP.

Stall on the convertor is around 2800, and the rear end is a 3.50 trac lok.


This car moves out, and it's 4000+ lbs!

Hope this gives you some ideas,

Greg

P.S. Get a '71 or older timing set, in 72 the cam timing was retarded for emissions. This is probably the biggest single improvement on a stock motor.

[This message has been edited by Greg Pettit (edited 07-17-2002).]

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dlewis
Journeyman

Posts: 10
From: slidell, LA, USA
Registered: Jul 2002

posted 07-17-2002 02:28 PM     Click Here to See the Profile for dlewis   Click Here to Email dlewis     Edit/Delete Message   Reply w/Quote
i have a 351c 2bbl heads with a 600 cfm carb,204/214 510 lift cam, aluminum intake(edelbrock), pertronix conversion, mallory coil, paltnum plugs, 1 3/4" headers 2 1/2" duals, FMX auto trans, 2,73 gears. car runs strong after 2,000 rpm still trying to get stronger, really need a stall...

the 4 bbl heads closed chambers are bbbaaadd... a couple of guys run them on the street and they make good power.

darren

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jsracingbbf
Gearhead

Posts: 1677
From: Batesville,MS. , U.S.A.
Registered: Mar 2002

posted 07-17-2002 06:26 PM     Click Here to See the Profile for jsracingbbf   Click Here to Email jsracingbbf     Edit/Delete Message   Reply w/Quote
Thanks for the ideas guys
Jerry

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kid vishus
Gearhead

Posts: 4538
From: middle of NC
Registered: Oct 2000

posted 07-17-2002 08:39 PM     Click Here to See the Profile for kid vishus   Click Here to Email kid vishus     Edit/Delete Message   Reply w/Quote
Here's another perspective. The last motor I built for my 70 that wasnt out of left over raceecar parts was a standard bore, 2v headed cleveland. I originally put a edelbrock performer on it, it had a 750 VS holley, cheapo headers (dont know the pipe diameter, but they werent huge), a Crower hydro cam that was 225 @ .050 with .540 lift, a c4 with a 3500 stall convertor and I had 4.11 gears in it. I did some mild port work on the heads, I honed the block in the garage using a cheap stone hone you can get at Autozone, I power washed it at a local carwash, and when I was done, I had a grand total of less than $400 in the whole thing. I bought a re-ring kit from PAW that timing chain and an oil pump in it. The crankshaft was even still standard/standard.

The neat thing was, with the edelbrock intake, shifting at 5400 with slicks on the car, it ran in the 13.80's. I bought an untouched Weiand excelorator from a buddy and put it on. Still shifting at 5400 it then ran 13.20's. The street manners of the motor never changed one bit with the manifold change. From that, I determined the edelbrock performer for the 2v cleveland was junk.

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futurattraction
Gearhead

Posts: 106
From: Iowa City, IA
Registered: Oct 2001

posted 07-17-2002 11:05 PM     Click Here to See the Profile for futurattraction   Click Here to Email futurattraction     Edit/Delete Message   Reply w/Quote
For pure street use, I'd combine some of about each of the suggestions you've already received. Ported Aussie heads, X-celerator intake, 750 VS Holley and some nice street gears behind a 3K +/- converter. I'm running all of the above in my Fairmont, along with a Comp Magnum 280H cam. Lift on it is .530. Makes for a healthy, fun street motor...
Scott

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1979 Fairmont Futura, 351C w/Aussie heads, Comp Magnum 280, ProMustang headers, 3" exhaust w/Flowmasters
C6 w/10" converter
9-inch, 31 spl w/3.70s & trac-lok
suspension changes coming.

http://www.avalon.net/~spopham/futurattraction.htm

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