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I would like to find a set of cheap aluminum heads that work with the TPI injection (I'm pretty sure TPI is on the same bolt pattern as the vortecs?)
Weight savings! Higher compression ratio with lower octane...
I need some idea's... Buy a parts car that has everything needed to make the swap?
The only production aluminum heads you can use with TPI are the ones off a L98 Corvette.
Vortec heads are not aluminum and are raised port, I think edelbrock makes a TPI base intake for raised runners but the bolt pattern is different.
The L98 is not a bad head for the TPI system. A little port work and they flow decent. By the time you rework and port them they are no longer cheap though.
I doubt, I can find a wrecked vette... with a decent engine, of that vintage... cheaply!
I'm fighting the urge to upgrade my 882 (76cc heads ) in hopes of switching to a set that have a good bit more potential. The Vortecs are great heads... out of my budget for the moment, requiring rockers, and a new intake to run!
They have similar specs to the "fuelie" heads from the late '60s, but also have heart-shaped chambers similar to Vortecs (the photo doesn't show this). 67cc chambers, 2.02/1.60 valves, 165cc intake runners. An excellent bargain at only $650/pair!!!
Go to Summit Racing and search SUM-152123. They're actually made by Dart and are similar Iron Eagle Street/Strip heads, but with bigger valves and smaller chambers
BTW: TPI should bolt up to these. L98 heads used a standard -- not Vortec -- intake bolt pattern.
TPI intakes do not have the same bolt pattern as the vortecs, they have the same bolt as our stock heads except the 2 inner bolts on each side are angled more upright but you can grind the intake to allow use of all older style bolt patterns.
The Summit heads use centerbolt valve covers. You'll need to purchase them as well. They compare these to the old GM double humps, not bad, but not as good as the Vortec's.
Changing the heads should be an improvement, but in my opinion just changing them is not going to make a whopping difference. Buy what you can afford now and keep saving up until you get the intake and cam. By changing all three you will see and feel the difference.
I am sure this is a mistake on their site but if you go to summit, http://store.summitracing.com/defaul...4922130+305337
They have the aluminum vortec heads for $259, I say hey give it a shot and see what happens.
From: Las Vegas - Just stop perpetuating myths please.
Awsome price.
Originally Posted by page62
I just got a set of these from Summit Racing...
They have similar specs to the "fuelie" heads from the late '60s, but also have heart-shaped chambers similar to Vortecs (the photo doesn't show this). 67cc chambers, 2.02/1.60 valves, 165cc intake runners. An excellent bargain at only $650/pair!!!
Go to Summit Racing and search SUM-152123. They're actually made by Dart and are similar Iron Eagle Street/Strip heads, but with bigger valves and smaller chambers
BTW: TPI should bolt up to these. L98 heads used a standard -- not Vortec -- intake bolt pattern.
Great price and only negative feature is lack of heated crossover for a stock replacement head. But then if someone is using FI then its not an issue. cardo0
Cylinder Head, Aluminum, Natural, 64cc, Chevy, Small Block, Each
These cast iron Vortec cylinder heads will fit 1958 and later small block Chevy engines, and offer a 20 to 40 HP increase over earlier cast iron small block heads.
I agree the l98 alum vette heads are not a bad deal, they use them on the ZZ4 crates. If you plan to go over 400 hp then I would either buy better heads to start or save and buy later.