twistedwh1
Member
- Joined
- Nov 8, 2007
whats the differance between 25500031 and 25500185 heads??
stage 2 head question?
- Thread starter twistedwh1
- Start date
The 031 heads are the standard that almost all type engines used. The 185 head was the latest thing produced for Indy cars. The 185 head was developed along with a new short deck block that relocated the lifter bores for use with those heads. Basically the 185 head cannot be used on a standard stage 2 block!! The square port design moves the intake over enough it takes special rocker arms , head studs and relocated lifters for the pushrods to clear the relocated intake port. If you have and plan to use a short deck block with the relocated lifters you would use these heads. Otherwise you need to steer clear because nothing remotely normal work with them.
I have a couple of the low deck blocks and would be intrested in 185 heads if you know where a set is and your not intrested in them. BTW for everones info the low deck blocks are basically 1.250" shorter than a standard block and only very short stroke cranks can be used with this block because the deck height. This was designed for Indy cars that had engines around 200 cubic inches. Mike
I have a couple of the low deck blocks and would be intrested in 185 heads if you know where a set is and your not intrested in them. BTW for everones info the low deck blocks are basically 1.250" shorter than a standard block and only very short stroke cranks can be used with this block because the deck height. This was designed for Indy cars that had engines around 200 cubic inches. Mike
Lucky you!! I had a block stashed where I could see the PN without a hassle.
25500179 is the block number. Mike
twistedwh1
Member
- Joined
- Nov 8, 2007
what stage 2 block #s will the 25500031 work on??
twistedwh1
Member
- Joined
- Nov 8, 2007
i know that, its just a lil confusing all the stuff u were saying about the heads and what they would fit.
i know that, its just a lil confusing all the stuff u were saying about the heads and what they would fit.
OK , let me clearify this a bit. Those heads will bolt right on any stage 2 block. The top 3 head bolts will need to be the long type as in the 2nd row , a more offset rocker(indy) will need to be used. But in the end , if the head is ported and tried on a standard stage block ,you will not be able to get a pushrod to clear the intake port wall without some MAJOR work!! The port is simply too wide (moves toward the pushrod maybe 3/8"). On a standard stage 2 setup the pushrod basically rubs the side of a already very thin intake port wall , so moving it over 3/8" basically completely blocks the path of the pushrod. This is why they relocated the intake lifters on the low deck blocks.
Mike
GARY HARVEY
Member
- Joined
- Aug 17, 2001
Anyone ever eye the "Sabre" series heads?
This was the last edition of the S2 head (1987/91). Scotty Brayton was running them with his fathers efforts.
They look like they had some serious flow if what I saw at AJ's was an example (Howard Gilbert was at the helm).
This was the last edition of the S2 head (1987/91). Scotty Brayton was running them with his fathers efforts.
They look like they had some serious flow if what I saw at AJ's was an example (Howard Gilbert was at the helm).
