C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

stock corvette heads - flowrate ?

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Old Aug 6, 2006 | 11:53 AM
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Default stock corvette heads - flowrate ?

Hi guys!

AFR 190, AFR 195, AFR 225.....

Who knows - what "flowrate" at stock corvette heads? (L98 ' 91)

150cc? Or 160cc? Or 170..... Can who knows?
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Old Aug 6, 2006 | 03:51 PM
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I believe the L98 is close to the lt1 and the lt1 has a stock volume of 170cc on the intake ports. if I were going with heads and you plan on modding.. and mainly racing.. go for the biggest heads AFR makes think they are the 227cc heads... they will give you the longest power band and best track results fitted with the appropriate camshaft!

Chris
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Old Aug 7, 2006 | 05:15 PM
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Default thanks!

Originally Posted by lcvette
I believe the L98 is close to the lt1 and the lt1 has a stock volume of 170cc on the intake ports. if I were going with heads and you plan on modding.. and mainly racing.. go for the biggest heads AFR makes think they are the 227cc heads... they will give you the longest power band and best track results fitted with the appropriate camshaft!

Chris
Thank you for answer, Chris.
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Old Aug 8, 2006 | 12:14 AM
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From the Chevy High Performance Magazine website, L98 head
flow values

0.200". - 0.300". - 0.400". - 0.500".
120/096. 160/123 . 186/140 . 196/155. - 163cc (L98 TPI w/58cc & 1.94/1.50)

.
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Old Aug 10, 2006 | 06:11 PM
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Originally Posted by Slalom4me
From the Chevy High Performance Magazine website, L98 head
flow values

0.200". - 0.300". - 0.400". - 0.500".
120/096. 160/123 . 186/140 . 196/155. - 163cc (L98 TPI w/58cc & 1.94/1.50)

.

Thanks.
Very interestingly
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Old Aug 16, 2006 | 10:15 PM
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check vader86's website
more data on heads than you could ever need to know
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Old Aug 17, 2006 | 03:07 PM
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Originally Posted by lcvette
I believe the L98 is close to the lt1 and the lt1 has a stock volume of 170cc on the intake ports. if I were going with heads and you plan on modding.. and mainly racing.. go for the biggest heads AFR makes think they are the 227cc heads... they will give you the longest power band and best track results fitted with the appropriate camshaft!
Chris
AFR 220/227 require special valvetrain (i.e. read as shaft rockers), while the 227RRs require a special intake. In addition, the 210/220/227/227RR will not work with "typical" intakes. The typical intakes (SR w/BM, MRII, converted LT1, etc) do not have enough "meat" to be able to match up with the FP1206 intake. I have made them work, but not ideal.
Aaron
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