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Old 02-08-2009, 07:38 PM   #1
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Join Date: Aug 1999
Location: previously OKINAWA JAPAN,georgia, now new england
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Car: 1989 IROC--1989 T/A
Engine: 5.7 TPI in both
Transmission: W/C T-5 in both
Axle/Gears: B/W 3.27 in both

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?'s about 113 head swap and stock short block

Hello all, I am going to install a built up set of 113's on to my 40k mile L-98. I also will be putting in a LPE 211/219 cam.
1. Which head head gasket/bolts do I need? A "stock Fel-pro" for a 91 Vette?
2. Which push rods should i use?
thanks
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'89 SHAGGY IROC
L98, W/C T5, B/W 3.27 gears, all free stuff,T.E.S.,HOOKER CAT BACK,KYB,ACCEL8.8,JET fan sw. etc. 14.1@ 100.01 MPH w/t-5, installed my 3.27 B/W. 244 HP/347 FTLBS ON THE GROUND!!! Not bad for just bolt-ons.

1989 TRANS AM
L98, W/C T5, B/W 3.27 gears,all free stuff,T.E.S.,HOOKER CAT BACK,KYB,ACCEL8.8,JET fan sw. etc.
So much to do , So little money
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Old 02-09-2009, 02:10 AM   #2
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Re: ?'s about 113 head swap and stock short block

Those heads use the same regular small block chevy head bolts. The Fel-Pro 1010 is most commonly used for aluminum heads but there have been A LOT of problems with those recently. I used stock GM head gaskets.

They also use the same size pushrods as regular small block chevy heads. But you should always double check pushrod length and rocker arm geometry to make sure.
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Old 03-01-2009, 08:52 PM   #3
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Location: previously OKINAWA JAPAN,georgia, now new england
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Car: 1989 IROC--1989 T/A
Engine: 5.7 TPI in both
Transmission: W/C T-5 in both
Axle/Gears: B/W 3.27 in both

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Re: ?'s about 113 head swap and stock short block

Been awhile, but now i shopping for the build. What GM head gasket did you use? I have read bad things about the .051 gasket. It'sa bone stock short block, upgrading to heads, and LPE 211/219 cam. Thanks
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'89 SHAGGY IROC
L98, W/C T5, B/W 3.27 gears, all free stuff,T.E.S.,HOOKER CAT BACK,KYB,ACCEL8.8,JET fan sw. etc. 14.1@ 100.01 MPH w/t-5, installed my 3.27 B/W. 244 HP/347 FTLBS ON THE GROUND!!! Not bad for just bolt-ons.

1989 TRANS AM
L98, W/C T5, B/W 3.27 gears,all free stuff,T.E.S.,HOOKER CAT BACK,KYB,ACCEL8.8,JET fan sw. etc.
So much to do , So little money
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Old 03-01-2009, 09:22 PM   #4
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Re: ?'s about 113 head swap and stock short block

yeah the felpro L98 gasket i have heard of many problems with. You could try to run something like a mr gasket .028 or GM's .028 to help get the quench down since your pistons are down in the hole about .020-.025"

Either way, get those heads cleaned up and worked over for that cam. I think that cams lift is higher than .500 but i cant remember. STock heads need work to handle more than .470" or so. Offset retainers/shims can get you .500-.510 or so
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Old 03-02-2009, 07:59 AM   #5
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Re: ?'s about 113 head swap and stock short block

Quote:
Originally Posted by irocnroll89 View Post
Hello all, I am going to install a built up set of 113's on to my 40k mile L-98. I also will be putting in a LPE 211/219 cam.
1. Which head head gasket/bolts do I need? A "stock Fel-pro" for a 91 Vette?
2. Which push rods should i use?
thanks
For head bolts the stock y-body are slightly longer and have a hardened washer under the head. The extra length is to make up for the thickness of the washer. The bolts are pricey from GM, I believe ARP sells SBC bolts of the proper length with the washers. Look for bolts for aluminum heads (which is why the washers are required).

For head gaskets avoid the 1010's. The stock GM head gaskets are .052" compressed. May want to spend some time with one of the many on-line compression ratio calculators. And adjust the head gasket thickness for the desire compression ratio.

Note that the '113 heads have soft guide plates. So need to run a self aligning rocker or put in hardened plates & push rods. The stepped plates will interfere with the bracing in the valve cover. Which can be removed, but it is easier to go with flat guide plates.

If you go with roller rockers such as pro-comp's you will need longer rocker studs. Step up to the 7/16" stud along with the rocker to fit. No extra cost, but does provide extra valve train stability.

Note that the four center bolt holes in the TPI base need to be elongated. The '113 heads use the older style intake manifold bolt angle (all the same angle).

RBob.
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Old 03-02-2009, 08:37 AM   #6
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Join Date: Aug 1999
Location: previously OKINAWA JAPAN,georgia, now new england
Posts: 625
Car: 1989 IROC--1989 T/A
Engine: 5.7 TPI in both
Transmission: W/C T-5 in both
Axle/Gears: B/W 3.27 in both

Classifieds Rating: (3)

Re: ?'s about 113 head swap and stock short block

no worries on the heads, i bought the ones of of lt1z350. They got a lil' work done to 'em
see
http://www.thirdgen.org/techboard/en...113-heads.html
They have 3/8" studs already.
I have these too,
http://store.summitracing.com/partde...&view=1&N=700+
but not it seems i gotta get guideplates.
Any thoughts
__________________
'89 SHAGGY IROC
L98, W/C T5, B/W 3.27 gears, all free stuff,T.E.S.,HOOKER CAT BACK,KYB,ACCEL8.8,JET fan sw. etc. 14.1@ 100.01 MPH w/t-5, installed my 3.27 B/W. 244 HP/347 FTLBS ON THE GROUND!!! Not bad for just bolt-ons.

1989 TRANS AM
L98, W/C T5, B/W 3.27 gears,all free stuff,T.E.S.,HOOKER CAT BACK,KYB,ACCEL8.8,JET fan sw. etc.
So much to do , So little money

Last edited by irocnroll89; 03-02-2009 at 09:56 AM.
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Old 03-02-2009, 08:37 AM
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