Chuck84TA

Would this be a smart buy? I have been looking for some improvement with my L69 cylinder heads. The seller says that they are L98 aluminum cylinder heads with the victor jr intake. Don't think the Vic jr is do-able but the 58cc heads seem like a good buy

Here is a copy of his ad.....

This aluminum cylinder head assembly for small-block Chevrolet V8s is ideal for street rods, fresh-water power boats, and high-performance applications. GM Performance Parts' aluminum cylinder head assembly combines the benefits of light weight, advanced design, and an affordable price. GM Performance Parts aluminum cylinder head assemblies are based on brand new Corvette light alloy castings (P/N 10088113). The Corvette cylinder head's advanced design features include D-shaped exhaust ports that enhance the flow of burned gases, high-velocity intake runners that provide crisp throttle response, and centrally located spark plugs that improve combustion efficiency. This high-performance cylinder head assembly is used exclusively on High Output 5.7-liter small-block V8 engines. A pair of aluminum cylinder heads offers a weight savings of approximately 50 pounds over comparable cast iron cylinder heads. (A bare aluminum casting, less valves and springs, weighs 19 pounds, versus 44 pounds for a bare cast iron head). This reduction in total engine weight of 25 pounds each can improve handling, acceleration, and fuel economy.

CASTING NUMBER : 10088113 CID: 350 YEARS: 86-92 58cc Corvette Aluminum

COMES WITH VICTOR JR FROM EDELBROCK HOLLY CARB AND CRANE CAM ROCKER ARMS 10-1.6 WITH GUIDE RAILS AND HARDWARE VALVE SPRINGSARE DOUBLE SPRING AND MOROSE ALUMINUM VALVE COVERS

vetteoz

iTrader: (13)

Effectively same heads as the ZZ4

https://www.thirdgen.org/forums/tpi/...s-305-tpi.html
https://www.thirdgen.org/forums/tech...ads-305-a.html
https://www.thirdgen.org/forums/tech...heads-etc.html
https://www.thirdgen.org/forums/tpi/...ron-305-a.html

Damon

Yeah, they'll bolt on and work, but they don't have an exhaust crossover port (your EGR won't work any more and can throw a check engine light because of this).

Chuck84TA

I disconnected the EGR anyway by leaving the EGR on the intake but capping the vacuum ports. Plus there are no emission regs in IL for my car. So that is the only potential issue?

What about the aluminum vs. cast iron issue that some talk about? I guess the aluminum heads are less desireable because of reduced compression?

scoflaw

iTrader: (2)

Looking to do something similar. Looks like the angled plug on #5 on the 113's will hit the stock 5.0 exhaust.

Chuck84TA

You sound like you speak from experience. Would aftermarket headers like hookers or dyno dons help?