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horsepower
Horsepower in question. I was told I had 365-375 hp but I think it's more. I have a 351w with Hypereutectic heavy duty pistons appro.9to1 comp.Blue racer hydraulic cam,Edelbrock rpm heads 202in 160ex,Edelbrock dual plane intake,and an Edelbrock 750 carburetor. I myself was thinking this combo was closer to 400. Any input from you guys would be appreciated. Thanks.
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That probably isn't to far off the mark. Your compression will cost you a little power and you didn't say if you have a high rise or low rise intake. Also did you have the heads ported and polished. That would pick up some power depending on how well they are from the factory. Since you never said anything about it I am guessing the engine isn't a stroker. You could get 400 horse from that set up easy enough.
Ron :) |
No not a stroker. Low rise intake, but I do think the compression is closer to 9.5 to 1 because of the alum. heads. Heads are stock out of the box.
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While heads, Compression ratio, intake, and carb are very important, the most is the cam. You don't give the specs on the cam. What is the duration at .050 ? What is the lift?
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I dought that you make anywhere near that much hp
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one of ford's crate 351 is rated at 385hp
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We had a man here that built a Cobra some years ago and he used a basically stock 351 and a little better cam and had the heads ported and polished with a high riser intake and his dynoed out at 407 horsepower. I can't use mine as an example because it was a stroker and had a lot of work done to it for racing and it put out right at 530 horse with 507 pound torque. Ron ;) |
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I have to agree with Jerry. Stock untouched aluminum heads..not much of a gain in hp there. 9:1 compression...mild. Then you put an Edlebrock carb on top of it...that killed any chance youhad of making any hp....lol. Sorry I dont like anything but Holleys. I would say somewhere in the 350 to 370 range. Just my 2 cents worth. Gene |
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Ron :o |
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Having said that, though, I must admit that the IRS return is going to be spent for a "Holley-like" carb, a Quick Fuel model. I think the real issue with the old Holley was that it was just waaaay too big for the engine. It was a 780CFM model, the Edelbrock is only about 575CFM, I think. The Quick Fuel will be in the 600-650 CFM range. The compression issue is what is keeping your HP down, IMHO. Cheers from Dugly :cool: |
Jerry how much do you think I have? 175:LOL:
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maybe 225, would be easier if we knew some specs on cam
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wbulk, 520 lift 280 duration.
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I also Googled, How can I get 400hp out of a 351w and came up with several sights that said all you need is an Edelbrock Performer RPM top end package. I also found out HotRod TV did this on an episode and got just over 400 hp.
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Thanks for your time guys.:D
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That 280 must be advertised duration. So it must be in the 212-220 range at .050 depending if the specs were .004 or .006. I think the lower range is correct and maybe that is a tad high. And yes if that Edelbrock is set up right it is a good carb. They both have their issues. But it sure is easier to change jets.
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Well see...you aint comparing apples to apples. You went down in CFM and got better performance...not the carbs fault that your motor was too small........lol. Believe me the last thing I want to do is start a war about which carbs are the best. I wouldnt use a quadrajunk for anything but weighing down a crab pot...but I know guys that wouldnt run anything else. Maybe I cant tune anything else...lol. Gene |
Wbulk, yeah i think 212-220, but someone said 225hp. Really! Anyone else think it's that low? I hope to be on the road in May and want to dyno it and find out for sure!! I'll pass nubbers on when I get them.
As for the Holly( I don't want to start any thing either on carbs) but I had one on my 69 Vette 350/350 hp(and yes 350hp match# car) put a new Holly on and it was horrible. thanks litt. wav. |
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Do you have many hills there you have to get over ? Get the right rear end gears and you should be fine. |
392 cobra, no someone on here(not that I'm up set about it) just think that is way off. As for gears 3.50s in a 9" narrowed to 56" and a 4 link with strange 31 spline axels and Alden coil overs. Wilwood ultra light 4 piston calipers. 12.19 on the rear 11.75 up front.
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