T O P I C R E V I E W
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Tony Montana
Member # 8288
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posted
Ran across this motor and im planning on picking it up just wana know what kinda power i can expect and if i should make any changes. Its a 69 351w block and some of the specs are 10.7:1 compression ratio. 494"/494" 312/320degrees Hydralic camshaft ,Edelbrock Performer Intake Manifold port matched, stock iron Ported cylinder heads. Would this cam be a little too much for th street if so should what should i throw in to make it more streetable for the weekends .Going in a 68 mustang so smog not a factor.
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copcar
Member # 10113
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posted
Actually looks like a fairly decent street setup. More than likely a flat tappet cam. Will be a bit lazy when compared to a roller 302.
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turbo50
Member # 6700
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posted
Thing will run pretty hard to be honest.
You wont notice any laziness with that cam when on street tires because they will go up in smoke.
Have fun!!
Dan
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Tony Montana
Member # 8288
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posted
Thanks for the info guys, yeah the guy im buying it from said he had a blast with it and it used to be an old track motor. he says it ran 13's on street tires so hopefully i can get some nice dr's and get it into the 12's. Dan you always have good input man i appreciate it.
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Secnd2nun64
Member # 1431
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posted
Do you know the LSA, vacuum it pulls at idle? What accessories are you planning to run? Power brakes, power steering? A/C? That cam seems to have a long duration.
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Tony Montana
Member # 8288
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posted
Plan on running manual brakes, alternator , standard alum water pump and and power steering. No power brakes needed just gota start pumping the pedal like a super soaker to stop.
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turbo50
Member # 6700
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posted
Thats just advertised duration its old school look at duration at 50 and it aint shit compared to advertised.
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turbo50
Member # 6700
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posted
Found it an actually it does have about 240 degrees duration......but that motor will have more compression due to the 69 block especially with most ots pistons.
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2stangs69-91
Member # 1951
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posted
For a flat tappet the duration is still to big for vac brakes. To big for the heads probably sounds ok. I doubt it ran that fast in a truck guys blowing a little smoke at you. [ June 30, 2011, 04:24 PM: Message edited by: 2stangs69-91 ]
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Duncan Motors
Member # 7045
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posted
i think and am wonderin, cam to big big for heads, why is the 69 block have anything to do with compression,manual brakes none of it matters lol
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turbo50
Member # 6700
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posted
quote: Originally posted by Duncan Motors: i think and am wonderin, cam to big big for heads, why is the 69 block have anything to do with compression,manual brakes none of it matters lol
The 69 block has everything to do with compression.
Ill educate you Jon. The stock 69-70 and motors were nearly 11 to one compression:
http://en.wikipedia.org/wiki/Ford_Windsor_engine#351W
In order to knock the compression down all they did was raise the deck from 9.48 to 9.503
What that has to do with compression is that nearly every OTS piston for the 351 is based on compression height and deck height for the 9.5 deck block......yadda yadda yadda
Now yas know!
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Duncan Motors
Member # 7045
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posted
hmmm didnt know that , good read too .
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Tony Montana
Member # 8288
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posted
I didnt say truck i said track motor. He used to take it to the strip on the weekends. This was in a 67 mustang i doubt a heavy ass truck would run that fast either with this motor but dude isnt blowing any smoke he gave me straight forward details on his whole setup i just want to know how streetable it will be when i take it out for the weekend.
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Secnd2nun64
Member # 1431
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posted
If the motor is still in the car and running I would hook a vacuum guage up with it at idle. If your not getting at least 12 lbs at idle I would change the cam out to something smaller with a LSA 110 to 112. Choppy idles sound cool but not too good for cruising. Speaking from my own experiences.
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2stangs69-91
Member # 1951
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posted
lol sorry thought you said truck..Cam is to big for the set up...JMO. 13 sec in a 67 mustang with a 351 is not so hot JMO again..If you have manual brakes and a decent converter(or 5 speed) no problem.
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Tony Montana
Member # 8288
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posted
Yeah it is an old setup but im getting a killer deal the 69 block itself is worth what im paying. I have a 5.0 to drive when i just want to cruise but when i take the 68 out i might just want to raise some hell. He only ran 13's because he never had anything better then street tires back in the day at that so with some better drag raidals im sure i can get her down to 12's. I also plan on going to alum heads soon and when i do that il most likely change the cam out to match and get a air gap intake also.
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2stangs69-91
Member # 1951
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posted
sounds like you have a great plan..then you will really love it.
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Tony Montana
Member # 8288
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posted
Any ideas on carb im looking into a demon 650 double pumper
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