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How about this combo for an engine buildup>

S

sd pacecar

Guest
I have been kicking around rebuilding my L82. I have come up with this combo (keeping in mind I live in Nazifornia): tricked out Q-jet, Performer EGR, re-curved HEI, AFR 190's, ZZ4 cam, (if necessary) rebuilt bottom end, a .10 overbore, with the use of hypereutectic pistons and a Melling oil pump. The car is equipped with hedders and a 700r4, with a 3:55 rear gear.
I will have all of the smog stuff on for the test. Any thoughts? What kind of HP do you think this set-up would provide?
 

Brutus

Well-known member
Joined
Jul 5, 2001
Messages
106
Location
Sydney Australia
Corvette
1977 Yellow Coupe
Check out this site and see what you're happy with.
http://ryanscarpage.50megs.com/index.html
I did all the research before buying my heads and I finally went with AFR's 180s. Also when you've finally decided on the combination you want then it's time to fit a stall convertor that suits your ultimate combination.
 

Jack

Well-known member
Joined
Dec 27, 2000
Messages
1,825
Location
Florence, SC (Timmonsville SC)
Corvette
71 War Bonnet Yellow VERT 71 BH Blue CPE (SOLD)
ten over?

It's kinda routine to run ten over (+0.010") pistons in motorcycles ... but pretty rare for cars. Coupla thoughts: You may have a difficult time finding a supplier of ten over car pistons; car oversizes usually start at twenty over (+0.020") ... anyway, if your L82 has a lot of miles don't be surprised if it takes a thirty over (+0.030") cut & hone to properly straighten & clean up the bores ... thirty over is routine.

Hypereautectic pistons typically need only 0.0010"- 0.0015" clearance ... while Forged typically need 0.0040"- 0.0070" clearance. Please note that TRW/Speed Pro FORGED flat top piston pn L2256F 30 has factory clearance spec at only 0.0015" ... this piston'll make about 9.7:1 CR w/ 64cc heads ... and, for a forged piston has the unusual ability of a very tight (desirable for street) install. Also, the lite weight version pn LW2256F 30 is about 60 grams lighter at 549 grams.
JACK:gap
 
S

sd pacecar

Guest
Brutus: Great link! I bookmarked that bad boy.
Jack: I won't know how much of a bottom end rebuild I will need until I tear into it. .20 is no prob. Budget will be the determining factor.
 

Stingray6974

Well-known member
Joined
Oct 12, 2000
Messages
494
Location
Garland,Texas
AFR heads 190's (my personal favorite) are 68 cc. With the L2256
pistons compression is about 9.3 . L2256 is a flat top with 4 valve reliefs. Use L2417 pistons. Flat top pistons with a 3.5 trough. They will give you an ideal 9.5 compression with those heads. Pay the extra money to have the motor balanced, it's worth every penny.
Mike
 

Rowdy1

Well-known member
Joined
Mar 26, 2001
Messages
1,180
Location
Lake Hopatcong, NJ
Corvette
1962 CORVETTE-SOLD 2004 Z16 Z06 CE
Thanks Brutus

I also marked that site. Everything I've read so far is Gospel according to my engine man and what he told me to use to get the HP I wanted.:cool
 
S

sd pacecar

Guest
'Ray6974: Absolutely going with the balancing. I keep forgeting about the other "little" things like that and roller tip rockers, and a matching set of lifters/pushrods. Feel free to recommend any other tips I may be overlooking.
 

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