Anyone heared of a 288 cid chevy (destroked 350)

[sirswapsalot]

i just got a new ride that is suppose to have a destroked 350 (288 cid)

have u guys ever heard of a 288 destroked motor ?

if so its a 350 block what crank ?

thanks for your time & help

[zipper06]

If it is a 350 blk. it would be 2.875 crank, but 289 CI. But if it's a 283 BLK with a .030 over bore and a 3.00 (std 283 crank) it would be a 288 CI

Zip.

[sirswapsalot]

the block numbers are 3970010 i think that comes up all of them, the numbers on the front are gone, thanks for your help

[fast75vega]

the block numbers are 3970010 i think that comes up all of them, the numbers on the front are gone, thanks for your help

well 70010 is a 350 block. i didnt think the 283 crank would fit in the 350 block :?

[zipper06]

Yep i agree with fast75vega, it's a run of the mill 350 blk and a 283 crank would not fit ( 3.00 VS 3.450 main jurnals) so if it's a 288/289 CI it would have to ba an after market crankshaft or it's not going to be a 288" motor.

JMO

Zip.

[sirswapsalot]

he said it had a manley crank & rods, i just never heard of a 288 ? didnt know what the bore & stroke would be ?

also didnt know if they was suppose to be power houses or not ?

thanks for your help guys

[curtisreed]

Don't know why you would do it unless you where running a pounds per cubic inch deal. Powerhouse would depend on your point of view. Rev those little motors to the moon and they will make some power, try to lug them like a 408 and that is a different story.

JMO

Curtis

[fast75vega]

Don't know why you would do it unless you where running a pounds per cubic inch deal. Powerhouse would depend on your point of view. Rev those little motors to the moon and they will make some power, try to lug them like a 408 and that is a different story.

JMO

Curtis

thats what i was thinking too...... :wink:

[zipper06]

I had a friend when i lived in PHX, in the late 80's that had a 292" Nickens and Brown motor in a Gen 3 X prostock car that would run 8.80's @ 162MPH, with a Lenco. But he came out of the hole peddle to the metal about 10,500 RPM's, it was an amazing car but it killed valve spring after about 50 passes. I have vids of the car if anyone would be intrested.

Zip.

[sirswapsalot]

ya, i was just told they are high reving motors, i know this will turn 8000 with no prob, i guess thats why they destroke them ????

[Incognegro]

I have a 283 block and heads for sale if you need..

[RonOwensRacing]

A very good friend of mine use to run the 288 cube engine's back in the 70's he was index racing and it was weight per cubic inch .
He ran it in a Vega i will see if i can find some of the pic's and info on his engine he passed away last year . racing was all he lived for .

[oldandtired]

Year: 1972 / 1973 / 1975 (the last year of pushrod engines)
Location: Indy 500
Mechanic: Smokey Yunick
Engine: SBC 3.875 bore x 2.2 stroke
Induction: Twin Turbo
HP: 1,000 at 6,800RPM - 1,300 at 9,600 RPM
Quote from Smokey: "more mid range torque than I care to talk about"

[coolracing]

Correct me if im wrong but I beleive that was a grumpy jenkins combo that required main bearing spacers. I still have a set of spacers new in the box for a 400 chevy block when putting a 327 crankshaft in it!

[oldandtired]

Correct me if im wrong but I beleive that was a grumpy jenkins combo that required main bearing spacers. I still have a set of spacers new in the box for a 400 chevy block when putting a 327 crankshaft in it!

There are three main bearing sizes, and two rod bearing sizes up to 1986:

400 Main = 2.650 dia
Large Journal - 2.465 dia
Small Journal = 2.300 dia

Rods:
400 and large = 2.100 dia
small = 2.000 dia
(And the newer aftermarket Honda 1.888)

Cool, you are correct on your parts application to put a 262/267/302/305/307/327/350 large journal crank into a 400.

[zipper06]

Correct me if im wrong but I beleive that was a grumpy jenkins combo that required main bearing spacers. I still have a set of spacers new in the box for a 400 chevy block when putting a 327 crankshaft in it!

I don't know who started it but i've ran them forever. I have 2 GM 400 blks. 1 in my car 377" and 1 on the engine stand 406". I run the 350 crank mains because it's smaller and less friction VS the 400 mains. Another big advantage is that the bearing spacers have a full grove on the top spacer. I drill an extra hole at 45 degres on the 350 top bearing to get extra oil to the mains. I've done this for over 20 yrs and have never lost a main bearing in a 400 blk.

Zip.

[coolracing]

Good info Zip i'll keep that in mind! I originaly had them for a combo we were trying to build if my memory serves me correct i thought we were using a oldsmobile rod with a short skirt piston. wound up scrapin the build when we closed our shop up.