Headers, and pistons are different.

Pistons I wasn't aware of. Can the flanges the header's are welded to be changed to give the correct angle, or just buy new ones? What about the valve train?

Valve train will need to be a shaft setup with offset lifters, custom length pushrods.

What will need to be done to the headers depends on the heads you choose. A spreadport exhaust will need the middle tubes positioned a little farther away from each other. Different flanges can be welded on.

:) ccperf721p,
You beat me too it, we must have been typing at the same time,
Shaft rockers are also different some take .250 offset intake rockers, requiring a .180 or .200 offset intake roller lifters. I've got a set of Brodix 10's RP,FP's 23* spredports that take the .250 offset rockers and lifters. I bought the T&D rocker from Randy Roberts with the mud truck, that he had on his 18* heads. I'm not sure that all 18* heads require the use of offset lifters. I think this engine will make about 750 HP with injection on alcohol.
I've got a set of Lemon 2"X2 1/8" with 4" collectors that are Malibu specific, but they weren't cheap by any means.

JMO

Zip.

I've looked at Lemon headers, and your right, they are not cheap. The car all this is going into is a 85 Camaro.

HIS HATS ARE EXSPENSIVE..I BROUGHT ONE FOR 1600 DOLLARS AND HE GAVE ME THE HEADERS FREE....LOL

I could not afford those prices, but i really lucked out. There was police officer in Lansing Mi. who parterned with another person, his motor the officers car. The headers were never ran but installed. They parted company and the cop had them on RJ for $400.00, i got in contact with him and says hey i just put them on Ebay, starting bid $350.00. had 8 egt bungs, all the whisles and bells.
I was the only bidder, because they were made for a 1980 Malibu same as my car, one of the best deals i ever got in my life. He sent me the original bill from Lemons and it said $1350.00, plus bungs.

Zip.

Jreiley,I have an 18 deg. head motor in a 83 camaro,same as your 85.I have edelbrock victor 18 heads,lemons headers 2 in. pipe 3.5 col.t&d rockers .550 intake .170 exhaust offsets,.180 offset lifters,18 deg. pistons. Stock body with a cage,stock type suspension,10 in.slick.Best-1.36 60,6.15 112 1/8 9.67 140 1/4.Street legal antique plate car.Good luck with yours.Bill Bates.

Hope mine will run as well as yours. Thanks............

Here is our 427, 759 HP
http://www.cnc-motorsports.com/produ...25&CtgID=29564

I will agree 18 degree will make more power, but unless you plan on buying used parts, $10,000 is a tight budget carb to pan.

Just saying 23 degree heads can make 700 plus horsepower.