302 chevy

[1988montecarloss]

i found a 302 chevy that supposedly makes 500hp.

these are the specs on it:

The heads are alum D port heads, 60cc chambers with big valves. its got alum 1.6 ratio roller rockers. cam is a comp nastalgia cam, 298duration, 525ish lift with the rockers, was like a 2200-6900RPM cam. new valve springs keepers all that. Got headers that are wrapped up, alum weiland single plane high rise intake, 1 or 2 inch alum spacer plate and a 4bbl eldelbrock carb.

i know theyre not very specific but does it sound possible?

the guy said this setup on a 350 in a 79 malibu ran a 6.8 1/8th mile

[KeithTurk]

Re: 302 chevy

It's hard to say... but not likely... My 500hp ish 302 is fairly trick... spins 8200rpm to get right around that number and the pistons are fairly knotty... at 12.7 to 1... and the cam's got a bit more lift with .630"

( this is the cast iron motor )...

K

[1988montecarloss]

Re: 302 chevy

It's hard to say... but not likely... My 500hp ish 302 is fairly trick... spins 8200rpm to get right around that number and the pistons are fairly knotty... at 12.7 to 1... and the cam's got a bit more lift with .630"

( this is the cast iron motor )...

K

i asked for more details on it. i'll post them when i get a reply from the owner

[SpiderGearsMan]

Re: 302 chevy

used motors scare me

[1988montecarloss]

Re: 302 chevy

used motors scare me

me too. but for what it has done to it. its definitely worth what hes asking. and he drag races at winterport so he probably knows what hes doing.

[Freiburger]

Re: 302 chevy

i found a 302 chevy that supposedly makes 500hp.

these are the specs on it:

The heads are alum D port heads, 60cc chambers with big valves. its got alum 1.6 ratio roller rockers. cam is a comp nastalgia cam, 298duration, 525ish lift with the rockers, was like a 2200-6900RPM cam. new valve springs keepers all that. Got headers that are wrapped up, alum weiland single plane high rise intake, 1 or 2 inch alum spacer plate and a 4bbl eldelbrock carb.

i know theyre not very specific but does it sound possible?

the guy said this setup on a 350 in a 79 malibu ran a 6.8 1/8th mile

That's super vague and super bench-racer. But, no, it likely does not make 500.

[Brian Lohnes]

Re: 302 chevy

and he drag races at winterport so he probably knows what hes doing.

Never make that assumption....

Brian

[Eric68]

Re: 302 chevy

1.65 HP per cubic inch is possible but takes some serious work to get there. Not likely with a Nostalgia flat tappet cam. I'm not liking the intake and carb either.

I think its funny that used race motors all make even horsepower. 500 or 600 or 1000.

That being said, if it is an original 302 (as in a Camaro Z28 motor) it is worth some serious money.

[jcharliem]

Re: 302 chevy

I agree with the other guys. 500hp out of a N/A 302 seems a bit of a stretch... particularly with the cam you describe. To get near 500hp, you'd need to buzz the thing to the moon and I don't believe you have enough cam for that.

Can it be done? Yup, but you'd need some trick stuff.

[SpiderGearsMan]

Re: 302 chevy

if hendrick sells you a 900 hp motor - believe em

[min301]

Re: 302 chevy

I agree with the other guys. 500hp out of a N/A 302 seems a bit of a stretch... particularly with the cam you describe. To get near 500hp, you'd need to buzz the thing to the moon and I don't believe you have enough cam for that.

Can it be done? Yup, but you'd need some trick stuff.

Agreed.

[walt reynolds]

Re: 302 chevy

A stock! 302 with the original 486 lift cam make about 375-400 hp so this may not be too far off. These 302's came with really good flowing heads so I would say it depends on how good the aluminum ones flow.

[min301]

Re: 302 chevy

I would say 425, or so. That's not much cam, intake or carb.

[Schtauffer]

Re: 302 chevy

Was it ever run on a dyno?

[jcharliem]

Re: 302 chevy

A stock! 302 with the original 486 lift cam make about 375-400 hp so this may not be too far off. These 302's came with really good flowing heads so I would say it depends on how good the aluminum ones flow.

They were rated at 290hp (as was the Boss 302), likely for insurance purposes. A few years back, I was in the dyno room where we lit up a DZ 302 built to the original specs (pistons, cam, intake, carb... everything) for a complete matching-numbers restoration of a '69 Z/28. 360hp at the flywheel. The DZ 302 used the same straight-plug 2.02" heads as the LT-1 350. It was rumored that the angle-plug 2.02" heads (which were available over-the-counter) would add 10 - 15 more ponies.