Thread: Stock power.

Tweet

I have a simple question. Often people ask me how-much power my car ( 32 Ford roadster) worth. I can't answer.

The engine is a 1973 Camaro 350, rated at only 175 HP as stock.

This engine is internaly stock but with block-Huggers, dual exhaust with summit Turbo mufflers, a SP2P Edelbrock dual plane manifold, no EGr and a 600 CFM Edelbrock carburetor and a stock HEI ignition, how much HP can I expect?

Gilles

I'll play your game. I'll guess ...........................200.

Why worry??.....Lie like all the rest of us do........oh, say...........650hp???....lol

Tell them what Rolls Royce does: Sufficient

Pat

Get ya one of these then come back and tell us who was closest


http://www.gtechpro.com/

I was just curious. Sure it's enough power and don't need more. It runs very good, never have any problems with it. It's in a 32 Ford roadster, and with 3.42 rear-end ratio, TH700R4 transmission the gas consomption at 70 on motorway is 23 MPG. Important thing in a country where gas price is 1.1€ a liter ( 5.2$ a gallon)

Thanks for your replies,

Gilles

Gilles, Thanks, I came across this old thread while searching on turbo mufflers. I will soon have a very similar setup except a '29 body (I assume your '32 is fendered?) and a 3.5 rear ratio. I am trying to get 20+ mpg using the 700R4 OD. It looks like your data indicates I can hope for about 22 mpg. My engine is a '76 350 with a Crane street cam that is just a few degrees more duration than the stock cam, but I am using 1.6 rockers. Internally the engine used a stock rebuild kit and the 882 heads with only the exhaust ports cleaned up and the 0.030 overbore and flat top pistons calculate out to about 9:1 C.R. I got maneuvered into an Edelbrock Performer-RPM manifold which may be too large but the carb is an Edelbrock 600 cfm and I will use the stock HEI ignition. So far your setup is the closest to mine I have found with actual mpg data. Thanks.

Don Shillady
Retired Scientist/teen rodder

I think 200 flywheel horse power is about right. But hoprse power does not count for much. It is torque that pushes you back in the seat and makes the tires squeek. And Chevy 350s, with their relitively long strokes, are torque making machines. I'll bet you roadster can get anyone's attention pulling away from a stop sign.

I have a very similiar motor in my 32 Ford roadster. The only difference is that I have an RV cam and Vortec heads. Both are designed to get more gas in the chamber at a given RPM. So, while I may have a little more horse power I am not all that efficient when it comes to over the road mileage.

Good to see you posting over here to.

Thanks to your replies. Always intersting to make comparison with similar cars or engines.

Gilles

Gilles.

My 350 is out of a 1970 El Camino. Has been bored to 355 C.I. holley 600, performer manifold, block huggers, Pertronix, K & N filter, turbo350 and volvo (Dana) 3.71. In a Deuce Coupe.

I will be soon running the rod on a dyno along with some friends from garyboy.co.uk who run modern modyfieds (imports, ricers?) Just to see who's fooling who...he he.

Best BHP claimed, pre dyno so far is a BMW. I better do better than that!!

When I find out the BHP and Torque for mine I'll post it up.

Several folks, including DennyW, have told me that adding 1.6 ratio rockers to ONLY the exhaust valves helps a lot with torque. At first I thought if any, the 1.6 rockers should be on the intake valves, but now three people have told me to put them on the exhaust valves including a circle track racer. Anyway when the dyno results start coming in we should compare to some of the many results given on Ryan's site:

http://www.ryanscarpage.50megs.com/combos1.html

In particular, Ryan's example 56 shows this effect. The improvement is most pronounced for short duration cams like the stock cam so it would be interesting to see what happens to a mildly modified 350.

Don Shillady
Retired Scientist/teen rodder

Interesting thing the 1.6 rockers. If it works it would be an easy improvement.

I thought a stock 350 withe a stock cam had his peak power @4000 RPM and the maxi RPM around 4500.
Until this week-end I hadn't a tachometer on my car. Now I have one (Autoguage) and I discovered that my engine can reach 5000 RPM. Maybe it's normal, or the headers and dual exhaust helps?

Gilles

usually, you can take them up to 6500 rpm or around there. that is usually when your valves start to float unless you have solid lifters and all that stuff in your valvetrain

What the heck happened in 3 years to the HP for the 350? When I was a teen my Dad had a 70 Chev Impala, totally stock. Clear as a bell I remember the sticker on the air cleaner, claiming 240HP. Did they ruin the stock 350 by 90HP in just 3 years?

I know it had the Rochester Quadrajet 4BBL, but can remember little else as to why it produced a stock 240HP. I do remember that it would roll out pretty damn good for a land yacht.. Glad my Dad never found out how hard I drove that big baby, or he would have me walking to this day..... I doubt if he ever redlined it through all three gears in all the time he owned it. It would shift into 2nd at about 64mph, into third at about 98mph, and pin the 120mph speedo easily in 3rd. Never did find out what its top speed was...not many radar guns in those day..thankfully!

Originally posted by mr_picklz
usually, you can take them up to 6500 rpm or around there. that is usually when your valves start to float unless you have solid lifters and all that stuff in your valvetrain

6500 on a stock motor ant gonna last long and anyway, anything over 5000- 5500 youed be backing up, on a show room motor that is. JMO