462 double hump hp capability

[jeepracer]

hi all, im ooking to build a high winding 302 chevy. i just bought a motor, that i was told was a 327 but its a 283. im going to use that crank and put it in a 327 block i will be purchasing. i am going to have big domes (running alcohol) and forged rods. i will be using a solid roller cam. i am using gm 462 2.02 1.60 double hump heads that a friend of mine has. my question is, how much hp can this setup produce without touching the heads.

[af2]

hi all, im ooking to build a high winding 302 chevy. i just bought a motor, that i was told was a 327 but its a 283. im going to use that crank and put it in a 327 block i will be purchasing. i am going to have big domes (running alcohol) and forged rods. i will be using a solid roller cam. i am using gm 462 2.02 1.60 double hump heads that a friend of mine has. my question is, how much hp can this setup produce without touching the heads.

#1 question is what is high winding?

[jeepracer]

high revving and as much as it needs to.

[Dave Koehler]

More or less born and raised on those combos. It's a decent street app if the car is light enough.
Heads? Get some aftermarket and sell the 462 to someone doing a restore.

[af2]

high revving and as much as it needs to.

The reason I ask is because the 283 we have used to leave at 10,000. Are you ready to spin that?

The 377 I run spins 9000 and is not a street motor at all.
Only wondering what you want to rev it to.
Or you can be the save the motor crowd and shift at 6500??????????

[af2]

high revving and as much as it needs to.

The reason I ask is because the 283 we have used to leave at 10,000. Are you ready to spin that?

The 377 I run spins 9000 and is not a street motor at all.
Only wondering what you want to rev it to.
Or you can be the save the motor crowd and shift at 6500??????????

The 283 had and has Mondello 462 heads. They are small compared to today's heads with the offset Intake rockers.

[jeepracer]

jeepracer wrote:high revving and as much as it needs to.



The reason I ask is because the 283 we have used to leave at 10,000. Are you ready to spin that?

my theory is, they had a small stroke for a reason...to spin them high. i was looking at more of an 8500-9000 redline. id like to base it mainly off the scca 302's. i know they used those heads but what they did to them, i dont know.

was the 283 ever dyno'd? sounds sweet

Also, are those Mondello 462 heads oem heads that have been worked or are they aftermarket?

this motor will never be a streetable motor, strictly racing so the low rpms dont do anything for me!

[barnym17]

They did have a reason for the small stroke, scca rules and a 305 cid limit.They used the 4 inch bore because it allowed better breathing than the 283 bore thus the 3 inch stroke 283 crank was used to squeak in under the cid limit.

[Dave Koehler]

Mondello = oem heads reworked by Joe Mondello
[quote="jeepracer"
....... so the low rpms dont do anything for me![/quote]

Be careful what you wish for. The term budget is about to go out the window.
Repeat: aftermarket heads.

[Keith Morganstein]

Mondello = oem heads reworked by Joe Mondello

....... so the low rpms dont do anything for me!

Be careful what you wish for. The term budget is about to go out the window.
Repeat: aftermarket heads.

you mean he can't just use 462 heads with Z28 springs, a big cam and rev it to 10K?

[Dave Koehler]

Mondello = oem heads reworked by Joe Mondello

....... so the low rpms dont do anything for me!

Be careful what you wish for. The term budget is about to go out the window.
Repeat: aftermarket heads.

you mean he can't just use 462 heads with Z28 springs, a big cam and rev it to 10K?

Once

[ZIGGY]

you mean he can't just use 462 heads with Z28 springs, a big cam and rev it to 10K?

Once

P.S. - This probably needs to move out of Advanced Tech.

[jeepracer]

all i simply asked was what kind of hp you think it would make.

you mean he can't just use 462 heads with Z28 springs, a big cam and rev it to 10K?

when did i say i was going to rev it to 10k?
i cant change the rules that state you must use oem heads. so that is what i have to work with.

[avengerengines]

You can make power with that head. At one time that was the latest and greatest and it was all we had. If you had a set of ported double humps, you were the man.

[Dave Koehler]

Well, you didn't state any of that stuff. You made yourself sound like any other 1000 hp, 40mpg street wannabe.
What it might make, maybe, is somewhat meaningless at this point.
Start over.
vehicle, class, rules, goals etc. etc.