Building a 427. - Team Camaro Tech
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post #1 of 7 (permalink) Old Oct 23rd, 05, 08:55 PM Thread Starter
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Tom
 
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Location: Upstate, New York
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Building a 427.

There seems to be a lot of tech info here so thought I would pose a few ???.

1. 163 intake on oval port heads..anyone done it? results? opinions?
2. 2 bolt vs 4 bolt..4 bolt engines are always more $$ not building a numbers car, just a strong street car. also, how about adding 4 bolt caps to a 2 bolt block???


thanks team camaro

tom williams

we finally got a 69!!!

02 Berger 380hp 6spd red/white conv/Lots of L78 Novas.....69 SS350 Camaro..Karen's new addition!
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post #2 of 7 (permalink) Old Oct 24th, 05, 09:15 AM
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Re: Building a 427.

If it's a 4spd car and a Camaro I wouldn't use the 063 head. You don't need the mid range torque. I helped a friend build basically a stock L-72 with the 9.8 to 1 pistons and a Lunati cam. You don't need or can use anymore power than this thing has.
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post #3 of 7 (permalink) Old Oct 25th, 05, 05:31 PM
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Dave
 
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Re: Building a 427.

I have been using 2-bolt main blocks for 30 years and never blown one yet. Biggest one was 454 with nitrous. Yeah, 4-bolt main blocks are probably stronger, but for 500 or so horsepower, 2-bolters work just fine.

Dave F. in Rhode Island
'68 Camaro SS Accel DFI 454 (SOLD - I'm a boring Corvette owner now)
Bought my first big-block Chevy in 1970
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post #4 of 7 (permalink) Old Oct 25th, 05, 06:18 PM
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Bill
 
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Re: Building a 427.

Quote:
Originally Posted by WILMASBOYL78
There seems to be a lot of tech info here so thought I would pose a few ???.

1. 163 intake on oval port heads..anyone done it? results? opinions?
2. 2 bolt vs 4 bolt..4 bolt engines are always more $$ not building a numbers car, just a strong street car. also, how about adding 4 bolt caps to a 2 bolt block???


thanks team camaro

tom williams

we finally got a 69!!!
Tom,

I'm going to ask the age-old question- what's your budget?

And what parts do you have/want to reuse?
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post #5 of 7 (permalink) Old Oct 25th, 05, 07:53 PM Thread Starter
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Tom
 
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Location: Upstate, New York
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Re: Building a 427.

Trying to keep the budget in the $3000 range. would like to have a 427 cid engine. I have a set of 290 oval port heads that are in good shape. have a 163 intake, also have an Offy oval port intake(don't know if they are any good?) have a 72 402 2 bolt block..could sonic test and see how far we can punch it out. It has been hot tanked and magged..checked out ok. figure I will buy a good steel crank,(have the cast one from the 402..??)fresh set of rods and pistons/rings/bearings/ol pump. plan on using a Crane blueprint L78 solid cam, would spend some money on the heads: 2.19 & 1.88 valves, hardened seats, new guides, performance valve job, blending as needed for larger valves. have most of the other stuff: pan, timing chain cover, distributor, carb, etc.

02 Berger 380hp 6spd red/white conv/Lots of L78 Novas.....69 SS350 Camaro..Karen's new addition!
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post #6 of 7 (permalink) Old Oct 25th, 05, 08:07 PM
 
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Re: Building a 427.

I don't think you would want to try boring the 402 block out to 4.250" (standard 427 bore size) but you might consider getting a 454 crank (4.00" stroke) to use in the 402 block. I know KB and maybe others make an off the shelf piston for this combo. It's sort of like the big block version of the 383 stroker, at a 4.155 bore (.030" over 402) you get 434 cu. in.
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post #7 of 7 (permalink) Old Oct 25th, 05, 08:26 PM Thread Starter
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Tom
 
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Location: Upstate, New York
Posts: 88
Re: Building a 427.

may also be able to swap the 402 block for a 454 motor..then I would be starting with the right bore size.

tom

02 Berger 380hp 6spd red/white conv/Lots of L78 Novas.....69 SS350 Camaro..Karen's new addition!
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