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Old 01-08-2008, 06:24 PM   #1
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Join Date: Sep 2001
Location: North Central Indiana
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Car: 86 IROC-Z / 89 GTA
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L98 Aluminum heads/roller rockers/guide plates/pushrods

Aluminum L98 heads for sale. approx 15,000 miles since rebuilt. I ran these on my 305 and it ran awesome. 13.7@100.5 on the stock chip. do a search for my screen name for more details. Only selling the heads because I installed my 383 and no longer need them. Heads are painted black because I wanted to disguise them on my 305. They are in perfect condition, ready to be cleaned and bolted on. Needs nothing. Asking $450 OBO

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extruded 1.5 ratio roller rockers for sale as well. $65

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Hardened pushrods for flat tappet cams and lifters. $30 OBO
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Send a PM with any questions. I need to sell this stuff.
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86 IROC, 383/LPE heads/LPE219/SuperRam, TKO 600, C4 IRS w/3.54s
89 GTA, 383/ProFiler 185s/XFI268/SuperRam, T56, 9bolt w/3.27s
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Old 01-08-2008, 06:29 PM   #2
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Car: 1985 Trans Am
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Re: L98 Aluminum heads/roller rockers/guide plates/pushrods

damn what else was done to the 305 to run in the 13's? Id buy these if i had the cash...

free bump good luck
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Old 01-08-2008, 06:31 PM   #3
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Re: L98 Aluminum heads/roller rockers/guide plates/pushrods

what year car were they off?
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Old 01-08-2008, 06:36 PM   #4
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Re: L98 Aluminum heads/roller rockers/guide plates/pushrods

All the 305 had was ported stock TPI parts. 214/224 duration flat tappet cam. edelbrock headers, and these heads. It was easily making 300+hp.

The heads are off of a 1990 Corvette.
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Old 01-08-2008, 07:37 PM   #5
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Re: L98 Aluminum heads/roller rockers/guide plates/pushrods

What is the length on the push rods??

mrtater
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Old 01-08-2008, 10:57 PM   #6
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Re: L98 Aluminum heads/roller rockers/guide plates/pushrods

PM sent
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Old 01-09-2008, 06:15 AM   #7
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Re: L98 Aluminum heads/roller rockers/guide plates/pushrods

Quote:
Originally Posted by mrtater99 View Post
What is the length on the push rods??

mrtater
7.75"
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Old 01-09-2008, 06:16 PM   #8
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Re: L98 Aluminum heads/roller rockers/guide plates/pushrods

good deal on the 113 vette heads, I know I paid a lot more for my set...
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Old 01-09-2008, 06:40 PM   #9
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Re: L98 Aluminum heads/roller rockers/guide plates/pushrods

I'm tempted to buy the rocker arms and pushrods. Ive got a set of aluminum L98 heads on my 86 LB9, would those rocker arms and pushrods be a straight up replacement, and work? Any clearance issues with the stock height valve covers?
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Old 01-09-2008, 08:57 PM   #10
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Re: L98 Aluminum heads/roller rockers/guide plates/pushrods

Quote:
Originally Posted by daveSS1987 View Post
good deal on the 113 vette heads, I know I paid a lot more for my set...
Tell me about it. I paid $600 for these things when I bought them.

The rockers are non-guided so you would need hardened guide plates(which these heads have) and hardened pushrods(which I also have) they will fit under stock centerbolt valve covers with no issue. However you can't run hardened pushrods with with the stock guide plates because they arent hardened, you'll wear grooves in them.
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Old 01-09-2008, 11:42 PM   #11
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Re: L98 Aluminum heads/roller rockers/guide plates/pushrods

ahh man ,

if you were close enough for for local pick up and if i had the cash on hand then those heads would of been gone.

bump for the clean aluminum vette heads
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Old 01-16-2008, 05:01 PM   #12
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Re: L98 Aluminum heads/roller rockers/guide plates/pushrods

SOLD!
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Old 01-16-2008, 07:01 PM   #13
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Re: L98 Aluminum heads/roller rockers/guide plates/pushrods

damn I would have picked up those heads for my '91
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Old 01-26-2009, 01:28 AM   #14
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Re: L98 Aluminum heads/roller rockers/guide plates/pushrods

Quote:
Originally Posted by 1MeanZ View Post
All the 305 had was ported stock TPI parts. 214/224 duration flat tappet cam. edelbrock headers, and these heads. It was easily making 300+hp.

The heads are off of a 1990 Corvette.
High I want to get some of these for my 305 TPI and try atleast to get what you got, a nice 13.7 with hooker shorty's, Edelbrock high flow base plate + SLP runners and K&N intake, with the 214/224 cam and these heads, I was wondering if these heads are the same as the new GM performance ones part number 12556463 ?? 163cc intake 58cc chamber/ 1.94'' intake, 1.50'' exhaust?? would these heads (12556463) fit on my 305 TPI with no problems?
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Old 01-26-2009, 01:47 AM   #15
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Re: L98 Aluminum heads/roller rockers/guide plates/pushrods

[quote=1MeanZ;3592414]Aluminum L98 heads for sale. approx 15,000 miles since rebuilt. I ran these on my 305 and it ran awesome. 13.7@100.5 on the stock chip. do a search for my screen name for more details. Only selling the heads because I installed my 383 and no longer need them. Heads are painted black because I wanted to disguise them on my 305. They are in perfect condition, ready to be cleaned and bolted on. Needs nothing. Asking $450 OBO




Hi, are these the same exact thing as the ZZ4 heads?, and would these bolt directly on to the 305 TPI with no problems? also what brand is the 214/224 cam you had? do you think i should go for the same ? since you got 13.7 out of it?
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Old 01-26-2009, 12:20 PM   #16
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Re: L98 Aluminum heads/roller rockers/guide plates/pushrods

The Corvette "113's" are the same as used on the ZZ4 crate.
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Old 01-26-2009, 04:37 PM   #17
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Re: L98 Aluminum heads/roller rockers/guide plates/pushrods

Yeah I think the ZZ4 heads have different valve springs for the hotter ZZ4 cam (not that hot but hotter than the stock 1990 Corvette cam) I have the Corvette heads and they came with the stock springs, bought a set of ZZ4 valve springs and they have a green line painted on the valve springs. Don't have the specs but the ZZ4 springs andle the higher lift cam I was told.
Dave
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Old 01-28-2009, 06:54 PM   #18
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Re: L98 Aluminum heads/roller rockers/guide plates/pushrods

ya i need some help ya im a noob but please, ok I want to get Trick flow 56cc heads/Cam combination for my 305 TPI but i kinda wanted to keep the internals stock cause of the budget, my stupid question is if i got a cam with higher lift in the range of .462/.469 218/224 duration at .050 to go with these heads, wont the higher lift send my valves into the stock pistons?
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Old 08-21-2011, 11:11 AM   #19
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Re: L98 Aluminum heads/roller rockers/guide plates/pushrods

sorry for the resurection.

I have a set of just done 113 L98 heads. these are the sort after alum vette heads.

"In 1988 GM switched the Corvette to the 10088113 casting "D-Port" aluminum cylinder heads. These were good for just over 350hp before you had to start working them."

new springs, seats, valves, retainers, all redone, still in the plastic bags from the machine shop. $700
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Old 08-21-2011, 11:11 AM
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