L-98 Cylinder Head Conversion - Which Gasket ?
Thread Starter
Burning Brakes
Joined: Mar 2001
Posts: 1,211
Likes: 5
From: Nashville TN
L-98 Cylinder Head Conversion - Which Gasket ?
Reading through the archives it seems the Victor Reinz 5746 is the gasket to use for these Aluminum 58 cc heads. Was curious if these are pre-compressed to eliminmate brinelling on the head surface. Anyone have another head gasket reccomendation.
Burning Brakes
Joined: Oct 2001
Posts: 1,146
Likes: 0
From: Milford NH
Re: L-98 Cylinder Head Conversion - Which Gasket ? (dman535)
According to John Lingenfelter on Modifying Small-Block Checy Engines, he lists the parts needed to convert to 'Vette heads, this is what he lists:
COVER, magesium Corvette, left P/N: 10055781
COVER, magesium Corvette, right P/N: 10055782
Cap, oil filter, Corvette P/N: 10229162
Cover, stamped steel, left P/N: 10046197
Cover, stamped steel, right P/N: 14091636
Bolts, valve cover P/N: 12338092
Washer, valve cover bolt P/N: 14094717
Gasket, Vavle Cover P/N: 14088564
Gasket, Head (0.051-ich thick) P/N: 14088948
Guideplate, Bow Tie P/N: 14011051
Hope this helps.
COVER, magesium Corvette, left P/N: 10055781
COVER, magesium Corvette, right P/N: 10055782
Cap, oil filter, Corvette P/N: 10229162
Cover, stamped steel, left P/N: 10046197
Cover, stamped steel, right P/N: 14091636
Bolts, valve cover P/N: 12338092
Washer, valve cover bolt P/N: 14094717
Gasket, Vavle Cover P/N: 14088564
Gasket, Head (0.051-ich thick) P/N: 14088948
Guideplate, Bow Tie P/N: 14011051
Hope this helps.
Drifting
Joined: Jul 2000
Posts: 1,861
Likes: 1
From: Bremerton WA
St. Jude Donor '09
Re: L-98 Cylinder Head Conversion - Which Gasket ? (69stingray)
Use the Victor Reinz gasket. You can buy it really cheap from Competition Products (do a websearch for them). They sell them for about $14.00 each. Disregard the Lingenfelter recommendation because you're likely to have a .015 to .024 piston to deck height (how far down in the hole the piston is at the top of its stroke). If you install a .051 thick gasket it'll be octane sensitive due to a ridiculous quench (.066 to .075). The piston to deck height added to the crushed gasket thickness is your quench. The Victor Reinz works good with the piston to dech heights you're likely have. If, on the other hand, your block has a zero deck height, The .051 might be a good choice, although I'd still shoot for a gasket to give you a quench in the mid to upper .040's. But that's just my opinion.
I run a 383 in a 3/4 pickup that has 10.5 to 1 compression with aluminum heads right now. I can haul anything I want anywhere I want with 92 octane and it never ever pings. Getting the quench right makes a big difference.
Cory
[Modified by CHarris85Vette, 9:43 PM 3/23/2003]
I run a 383 in a 3/4 pickup that has 10.5 to 1 compression with aluminum heads right now. I can haul anything I want anywhere I want with 92 octane and it never ever pings. Getting the quench right makes a big difference.
Cory
[Modified by CHarris85Vette, 9:43 PM 3/23/2003]
Drifting
Joined: Jul 2001
Posts: 1,897
Likes: 0
From: La Fontaine Indiana
Re: L-98 Cylinder Head Conversion - Which Gasket ? (CHarris85Vette)
Use the Victor Reinz gasket. You can buy it really cheap from Competition Products (do a websearch for them). They sell them for about $14.00 each. Disregard the Lingenfelter recommendation because you're likely to have a .015 to .024 piston to deck height (how far down in the hole the piston is at the top of its stroke). If you install a .051 thick gasket it'll be octane sensitive due to a ridiculous quench (.066 to .075). The piston to deck height added to the crushed gasket thickness is your quench. The Victor Reinz works good with the piston to dech heights you're likely have. If, on the other hand, your block has a zero deck height, The .051 might be a good choice, although I'd still shoot for a gasket to give you a quench in the mid to upper .040's. But that's just my opinion.
I run a 383 in a 3/4 pickup that has 10.5 to 1 compression with aluminum heads right now. I can haul anything I want anywhere I want with 92 octane and it never ever pings. Getting the quench right makes a big difference.
Cory
I run a 383 in a 3/4 pickup that has 10.5 to 1 compression with aluminum heads right now. I can haul anything I want anywhere I want with 92 octane and it never ever pings. Getting the quench right makes a big difference.
Cory
Thread Starter
Burning Brakes
Joined: Mar 2001
Posts: 1,211
Likes: 5
From: Nashville TN
Re: L-98 Cylinder Head Conversion - Which Gasket ? (jackson)
I looked up that gasket in the VR catalog. Its is for a vortech head on a late model Chevy/GMC truck which is an iron head. The fire ring on thise heads is not precompressed, anyone every have a problem with brinelling the sealing surface on their aluminum heads ? The machine shop that did thr heads suggested a Fel Pro 1003. Will try them and see what happens.
Drifting
Joined: Dec 2002
Posts: 1,861
Likes: 4
From: Houston TX
Re: L-98 Cylinder Head Conversion - Which Gasket ? (scorp508)
I use the Felpro 1043 with my 128 casting L98 heads.
Gasket Bore: 4.166"
Compressed thickness: 0.041"
Also, FWIW, the volume between the piston crown and the "flat part" of the head is the squish volume, not the quench.
Gasket Bore: 4.166"
Compressed thickness: 0.041"
Also, FWIW, the volume between the piston crown and the "flat part" of the head is the squish volume, not the quench.
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