help a newbie build a 327 [Archive] - Chevelle Tech

: help a newbie build a 327


deejay64
Jun 23rd, 03, 2:08 AM
i am new here and i dont have much knowledge on carbed cars. the chevelle is my dad and my project car. i am more of a EFI guy but will be building/picking out parts for our 327 so i need all the help/suggestions/opinions as i can. here it goes..............

here is what we are running FOR SURE.......(will be a street/show car/no dragging)
10 bolt w/3.42's
turbo 350 with a 2,400-2,800 stall

now, here are the two ways we are thinking of building the 327

setup 1:
Wold products S/R torquer heads
Edelbrock Performer intake
Trick Flow 210/216 (440/454)
crane 1.5 RR's,stock replacement pushrods/lifters
.30 over bore with speed pro forged pistons (9.07:1 comp)
summit stage 1 connecting rods
edelbrock 600 cfm carb

setup 2:
world products Sportsman 2 heads
performer RPM intake
crane 226/234(458/473) or trick flow 228/234 (480/494)
crane 1.6 gold race RR's,crane pushrods/lifters
.30 over w/speed pro foged pistons (10.35:1 comp)
summit stage 2 connecting rods
edelbrock 650 cfm carb

does everything sound right in each combo?
carb stuff is somewhat new to me and i dont know if each combo has a decent size carb

i am only looking to make 375-400 hp at the fly here. no big huge HP numbers. just a moderately fast street/show car
which one to do?
do i HAVE to upgrade connecting rods on either of these setups? feel free to mix and match combos here either.

427L88
Jun 23rd, 03, 10:24 AM
Thats a bit of grunt from a 327! I should think you'd want all of 10:1 nad a nice small SOLID flat tappet cam to try and hit those numbers.

Anyone have any thoughts on how Vortec's would work here?

Bob Johnson
Jun 23rd, 03, 10:56 AM
For Street/Show/No Drag race, You ask a little much from the 327, For the street only and pumped gas.
You could build for 325 to 350 HP for a lot less $ and more fun on the street and pumped gas.
JMOP Bob J.

Pat Kelley
Jun 23rd, 03, 11:54 AM
The 200cc ports on the Sportsman heads are way big for a 327. A 160-170cc port (with 62-64cc or smaller chambers) would be better. A 600 cfm carb is about as big as you should go. A 500 will work very well. I'd build it with about 10:1 CR and cam it for 8:1 DCR to run pump gas. The Performer intake is not much more than a stock intake but I'm not sure how well a RPM would work. Might be a bit big. The 327 can wind pretty high but doesn't need big ports and intake to do it.

pdq67
Jun 23rd, 03, 1:19 PM
Ditto, Pat...

A small Crane Fireball or a CC 268HE hydraulic cam, a set of modern heads like the big valve double humpers and shoot for a CR. of right at 9.75 to 1 for pump gas, a set of cheap, four tube long headers and a Performer or Weiand 8004 and a good old 1850, 600cfm vacuum secondary Holley and you will about have a Great street/mild strip 327!!!

Pat nails her right down with the 8 to 1 DCR, but I'm kinda conservative here so have dropped off a schosh on CR...

And I really like the smaller solid cams in the little motor like a stock -097 Little Duntov or one of Ultrdynes small solids!!!

A solid will allow the little motor to go upstairs great!!!

As always, jmho... pdq67

PS., one thing you do want to watch is to tire and gear her accordingly so you are actually working good with the cam's rpm power range...

hescop
Jun 24th, 03, 4:29 PM
My 327 runs ok.

.030 overbore
Flat-top forged pistons
Vortec heads
Crane Cams 10309-1 Spring And Retainer Kit
Comp XE268 cam
Performer RPM manifold (special Vortec version)
Performer 600CFM carb

I'm running stock connecting rods and shift at 6500 on the strip.

CR is around 9.5:1, runs fine on 93 octane.

Very well-mannered on the street and puts my fat ol' 71 into the 13.8's on street tires.

cjlandry
Jun 24th, 03, 4:40 PM
Well, you could go with a 3.48" stroke, that would help your "327" a great deal. ;)

Of course, if you insist on the shorter stroke, go with Vortec Heads. They're cheaper and more efficient than the heads you're thinking of.

The smaller port volumes and Vortec chambers will help tremendously.

Switching to a solid cam is the best thing I've ever done. I'll never go hydraulic again (unless it's a roller). Solids rule!

327's are awesome. 383's are even better! 350's are the best compromise ever.