|10-11-2012 06:27 PM|
Any style of heads will work with that block, you're probably best off avoiding center bolt valve covers.
|10-11-2012 05:38 PM|
I have an 89 block, what style AFR heads would i use?
AFR - Airflow Research 1041 AFR SB-Chevy Street Aluminum Cylinder Heads
or can i use the style with the non center valve cover bolt holes?
And for the double pumper carb do u reccomend mechanical or vacuum secondaries?
|10-10-2012 09:21 PM|
12-601-8 - Thumpr
Intake closes at 39.5 degrees after bottom dead center @0.050" tappet lift.
If static compression ratio is truly 9.6:1, then dynamic compression ratio is 8.274:1 on the KB calculator. Motor should be able to run on regular pump gas with that DCR.
Hydraulic rollers, due to their weight, will normally limit revs to around 6200 unless you also use a rev kit in the lifter valley.
The double pumper should work ok with a manual trans 4-spd....... RPM is the correct intake to use....... 3.90 gear should work ok with that cam....... 90% drag strip, I'd use comp heads. 90% street, I'd use street heads.
|10-10-2012 08:51 PM|
|10-10-2012 07:35 PM|
Cam is a retrofrit Hydraulic roller. It has roller lifters with the stock non roller rockers.
The car is a 1969 Camaro RS. It has a 4 speed trans with a 3.90 rear gear. 295 street tire used only for street weekend warrior.
So i was thinking 195 65cc AFR street heads? or competition heads?
Edelbrock performer RPM intake
Holley 750 DP carb
|10-10-2012 03:32 PM|
|10-10-2012 03:20 PM|
Rule of Thumb: Manual trans or 3000+ converter, use double pumper.
Auto with tighter converter, use vacuum secondaries.
|10-10-2012 03:08 PM|
|10-10-2012 12:04 PM|
I knew what line of cam it was as soon as I saw the vast seperation in the dual pattern and then the 107LSA.
In my opinion the best head for you combnation would be the AFR-195 CNC comp heads, but here are a few decent alternatives that dont cost quite as much; DART pro 1 200cc, RHS pro action 200cc, Brodix IK200's, Or even a bit cheaper would be the DART Iron Eagle Platinum 200cc heads. In my opinion you need to go with a dual plane intake like the performer rpm, and then I honestly believe that you would be best off going with a 750 vac secondary carb instead of the double pumper carb.
|10-10-2012 04:01 AM|
I am well satisfied with my TF 23* 64cc heads, Performer RPM intake, and Lars rebuilt Q-Jet. 383 stroker.
I am running a CC XE274H flat tappet cam. Static CR is 10.3.
Running 89 octane BP fuel.
|10-09-2012 11:17 PM|
Best Heads and intake for my 383 and cam
Dart CNC heads are the best. But you can use these Dart heads as well. Dart 11321111P - Dart Pro 1 Aluminum Cylinder Heads - Overview - SummitRacing.com and I agree with the price for the Patriot heads. Patriot Performance 2181 - Patriot Performance Freedom Series Small Block Chevy Cylinder Heads - Overview - SummitRacing.com. Of couse you will have to have the valve springs reccommended for your camshaft installed on either set of heads. For a carburetor a 750 DP from Holley or Quick Fuel.
|10-09-2012 11:07 PM|
Here's the cam he's talking about....
12-601-4 - Thumpr
He's also talking about using 1.6 rockers with it.
He probably didn't want to admit to the board that it's a Thumpr, for fear of being beat up.
OP- ditch the single plane in favor of an Edelbrock Performer RPM.
|10-09-2012 09:32 PM|
|vinniekq2||great heads out of the box,AFR 180s good cheap heaps that require porting,GM vortec, anything in between will cost and perform accordingly.750 cfm carb,manifold depends,performer is a good place to start with that small cam you mentioned,If its Hydraulic flat tappet,consider upgrading|
|10-09-2012 08:10 PM|
Best = Afr
Decent on a budget = patriot PN# 2181
Edelbrock performer rpm
Holley 750dp assuming lots of gear and converter or manual trans.
Buy stock in BFG's
|10-09-2012 08:02 PM|
What kind of cam is that? solid/hyd roller/flat tappet?
Some where in the 195cc to 215cc range. 64cc or smaller chamber.
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