Would this be a good combo? I'm in the middle of porting and siamising the runners and plenum and I;m thinking of going with the edelbrock intake instead of siasming it too. Would I encounter any problems with matching the intake up with the aluminum corvette heads later down the road when i get them? would it be better to just stay with the stock intake and siamise it or go with the edelbrock? any input is appreciated guys.

 

Aside from the D shaped exhaust ports, screw in studs, and aluminum construction, the L98 Vette heads are EXACTLY the same as the cast iron ones, as far as bolt-on-wise goes.

 

Great! thats what I was just wondering if it would cause any real problems if I wanted to do all the motor work in steps rather than all at once. Would it be better to go with the edelbrock intake and siamise it or siamise and port the stock one? Also do I have to remove the fuel rails to remove the intake or can I leave it intact?

 

Vette heads also have 58cc from the cast 64cc so your comp ratio will be bumped upt oo

 

NO! they are not exactly the same!
They do not have the EGR passages in then like the iron ones!
They have the pre'87 intake bolt angle. But his Edelbrock intake will still work.

 

What's the point ? Those heads a complete crap and dont make any more power then a regular iron L98 head. Get some decent heads like TFS, Edelbrock RPM, Sportman IIs, etc etc

 

Blackened, so do you have experience with aluminum L98's? So you really think there is no difference in power from the iron L98? You should go educate Lingenfelter, he's been doing it wrong I guess. I'm not saying there the "best" head, but they can be just as good as the ones you list. Personally, I'll be running AFR's sometime in the future, but my car makes a ton of power with these. Maybe I should sell mine and put on some stock iron L98's from the junkyard. I could take the profit and apply it to a Vigilante TCC. HA!!!

 

Ported they blow the TFS and Edelbrock heads out of the water. If you want the best go with AFR's but ported the AL L98/ZZ4 heads are still very good. And stock they make about 10HP and 15ft/lbs.

 

So if i decide to stay with the original intake and siamise it and decide to go with the l98 corvette heads, what problems am I going to run into? Do I have to modify a lot of stuff or just a couple things?