I have a chance to get some heads off of a what is described as a 1988 Camaro/TransAm TPI H.O. 350 (high output). I don't have any casting numbers yet. Compared to other stock heads, (041's, Vortec's, 461's, 186's etc, are they good for decent flow and performance? What is the chamber size and other spec's?

I need a set of heads for a Hobby-Stock dirt track car, 2,000-5,000 RPM, two barrel carb, stock exhaust manifolds, etc. They must be stock heads, no double humps, no 305's etc. Would these perform OK? I'm stuck with 305 heads at the moment for higher compression, but they're illegal and the flow, I'm sure, sucks.

I believe that even with the lower compression, some 64 cc, 350 heads with flat tops will out perform the 305's because of better flow.

What does everyone think?

Thanks!

Larry

[This message has been edited by 69-er (edited May 20, 2001).]

 

L98 heads sounds like what you Describe. No HO about it.

They will easily outflow the 305 heads you have now.

Some decent heads, In the way of Stockers.

of course, The Vortech's would be ideal.. but Then yuo get into the intake manifold Game.



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60 Ranchero - Project ( Money Hole )
85 Sport Coupe LG4 - Daily Driver
Reader's ride -> My Ride

Just another Hot Rod kid, or thats what they all tell me.
Livin' the Stereotype

 

One of the best stock cast iron heads right there. 64cc chambers may be damaging to a 305 compression ratio wise, especially a LG4,ect with dished pistons. Good flow potential with porting...

Also the two center intake bolts are offset at a different angle. Either get a later intake or grind yours to match.


[This message has been edited by JoelOl75 (edited May 21, 2001).]

 

Do your rules allow you to pocket port your heads?

If so, your 305 heads can be made to flow fairly well. At least, mine seem to do okay, and it was my first porting job.


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Daniel Burk
http://www.isthq.com/~dan/fcar.html
'84 Trans Am WS6/L69
KB SFC, Moser axles, Torsen Diff., Spohn Adj. torque arm,
Ported 305 heads w/1.94"intake valves, Comp Cams XE262H, Griffen alum. radiator,
Turbine Technologies 2500 stall converter, underdrive pulleys, Crane Hi-6 & more.
1.05g skidpad verified.
Best of 14.039 at 100.82 MPH in Stanton, MI
New! 275-40-ZR17 tires on ROH ZS 17 x 9.5's

 

He's got a 350. He said that the 305's were illegal. The flow obviously isn't the main problem. The tech inspector is.

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No guts, no glory.